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class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Gunea"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Edukiak" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Edukiak</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mugitu alboko barrara</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">ezkutatu</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">⇑ Gora</div> </a> </li> <li id="toc-Korrosioa_saihesteko_mekanismoak" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Korrosioa_saihesteko_mekanismoak"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Korrosioa saihesteko mekanismoak</span> </div> </a> <ul id="toc-Korrosioa_saihesteko_mekanismoak-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Korrosio_galvanikoa" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Korrosio_galvanikoa"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Korrosio galvanikoa</span> </div> </a> <ul id="toc-Korrosio_galvanikoa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Korrosioaren_erauzketa" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Korrosioaren_erauzketa"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Korrosioaren erauzketa</span> </div> </a> <ul id="toc-Korrosioaren_erauzketa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Korrosioarenganako_erresistentzia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Korrosioarenganako_erresistentzia"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Korrosioarenganako erresistentzia</span> </div> </a> <ul id="toc-Korrosioarenganako_erresistentzia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Tenperatura_altuko_korrosioa" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Tenperatura_altuko_korrosioa"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Tenperatura altuko korrosioa</span> </div> </a> <ul id="toc-Tenperatura_altuko_korrosioa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Korrosio_mikrobianoa" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Korrosio_mikrobianoa"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Korrosio mikrobianoa</span> </div> </a> <ul id="toc-Korrosio_mikrobianoa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Korrosioa_material_ez_metalikoetan" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Korrosioa_material_ez_metalikoetan"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Korrosioa material ez metalikoetan</span> </div> </a> <button aria-controls="toc-Korrosioa_material_ez_metalikoetan-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Erakutsi/ezkutatu Korrosioa material ez metalikoetan azpiatal</span> </button> <ul id="toc-Korrosioa_material_ez_metalikoetan-sublist" class="vector-toc-list"> <li id="toc-Korrosioa_material_polimerikoetan" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Korrosioa_material_polimerikoetan"> <div class="vector-toc-text"> <span class="vector-toc-numb">7.1</span> <span>Korrosioa material polimerikoetan</span> </div> </a> <ul id="toc-Korrosioa_material_polimerikoetan-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Korrosioa_beiretan" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Korrosioa_beiretan"> <div class="vector-toc-text"> <span class="vector-toc-numb">7.2</span> <span>Korrosioa beiretan</span> </div> </a> <ul id="toc-Korrosioa_beiretan-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Korrosio_ratioa" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Korrosio_ratioa"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Korrosio ratioa</span> </div> </a> <ul id="toc-Korrosio_ratioa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Erreferentziak" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Erreferentziak"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Erreferentziak</span> </div> </a> <ul id="toc-Erreferentziak-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Kanpo_estekak" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Kanpo_estekak"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Kanpo estekak</span> </div> </a> <ul id="toc-Kanpo_estekak-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Edukiak" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Eduki-taula" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Eduki taularen ikusgarritasuna aldatu" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Eduki taularen ikusgarritasuna aldatu</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Korrosio</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Joan beste hizkuntza batean idatzitako artikulu batera. 79 hizkuntzatan eskuragarri." > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-79" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">79 hizkuntza</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Korrosie" title="Korrosie – afrikaansa" lang="af" hreflang="af" data-title="Korrosie" data-language-autonym="Afrikaans" data-language-local-name="afrikaansa" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Korrosion" title="Korrosion – Suitzako alemana" lang="gsw" hreflang="gsw" data-title="Korrosion" data-language-autonym="Alemannisch" data-language-local-name="Suitzako alemana" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AA%D8%A2%D9%83%D9%84" title="تآكل – arabiera" lang="ar" hreflang="ar" data-title="تآكل" data-language-autonym="العربية" data-language-local-name="arabiera" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Escomiu" title="Escomiu – asturiera" lang="ast" hreflang="ast" data-title="Escomiu" data-language-autonym="Asturianu" data-language-local-name="asturiera" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Korroziya" title="Korroziya – azerbaijanera" lang="az" hreflang="az" data-title="Korroziya" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaijanera" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%DB%8C%D8%A6%DB%8C%DB%8C%D9%84%D9%85%D9%87" title="یئییلمه – South Azerbaijani" lang="azb" hreflang="azb" data-title="یئییلمه" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9A%D0%B0%D1%80%D0%BE%D0%B7%D1%96%D1%8F" title="Карозія – bielorrusiera" lang="be" hreflang="be" data-title="Карозія" data-language-autonym="Беларуская" data-language-local-name="bielorrusiera" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D0%BE%D1%80%D0%BE%D0%B7%D0%B8%D1%8F" title="Корозия – bulgariera" lang="bg" hreflang="bg" data-title="Корозия" data-language-autonym="Български" data-language-local-name="bulgariera" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Korozija" title="Korozija – bosniera" lang="bs" hreflang="bs" data-title="Korozija" data-language-autonym="Bosanski" data-language-local-name="bosniera" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Corrosi%C3%B3" title="Corrosió – katalana" lang="ca" hreflang="ca" data-title="Corrosió" data-language-autonym="Català" data-language-local-name="katalana" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/S%C4%83ng-c%C4%ADng" title="Săng-cĭng – Mindong" lang="cdo" hreflang="cdo" data-title="Săng-cĭng" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%AF%D8%A7%D8%AE%D9%88%D8%B1%D8%A7%D9%86" title="داخوران – erdialdeko kurduera" lang="ckb" hreflang="ckb" data-title="داخوران" data-language-autonym="کوردی" data-language-local-name="erdialdeko kurduera" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Koroze" title="Koroze – txekiera" lang="cs" hreflang="cs" data-title="Koroze" data-language-autonym="Čeština" data-language-local-name="txekiera" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Cyrydu" title="Cyrydu – galesa" lang="cy" hreflang="cy" data-title="Cyrydu" data-language-autonym="Cymraeg" data-language-local-name="galesa" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Korrosion" title="Korrosion – daniera" lang="da" hreflang="da" data-title="Korrosion" data-language-autonym="Dansk" data-language-local-name="daniera" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Korrosion" title="Korrosion – alemana" lang="de" hreflang="de" data-title="Korrosion" data-language-autonym="Deutsch" data-language-local-name="alemana" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%94%CE%B9%CE%AC%CE%B2%CF%81%CF%89%CF%83%CE%B7" title="Διάβρωση – greziera" lang="el" hreflang="el" data-title="Διάβρωση" data-language-autonym="Ελληνικά" data-language-local-name="greziera" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Corrosion" title="Corrosion – ingelesa" lang="en" hreflang="en" data-title="Corrosion" data-language-autonym="English" data-language-local-name="ingelesa" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Korodo" title="Korodo – esperantoa" lang="eo" hreflang="eo" data-title="Korodo" data-language-autonym="Esperanto" data-language-local-name="esperantoa" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Corrosi%C3%B3n" title="Corrosión – gaztelania" lang="es" hreflang="es" data-title="Corrosión" data-language-autonym="Español" data-language-local-name="gaztelania" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Korrosioon" title="Korrosioon – estoniera" lang="et" hreflang="et" data-title="Korrosioon" data-language-autonym="Eesti" data-language-local-name="estoniera" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AE%D9%88%D8%B1%D8%AF%DA%AF%DB%8C" title="خوردگی – persiera" lang="fa" hreflang="fa" data-title="خوردگی" data-language-autonym="فارسی" data-language-local-name="persiera" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Korroosio" title="Korroosio – finlandiera" lang="fi" hreflang="fi" data-title="Korroosio" data-language-autonym="Suomi" data-language-local-name="finlandiera" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Corrosion" title="Corrosion – frantsesa" lang="fr" hreflang="fr" data-title="Corrosion" data-language-autonym="Français" data-language-local-name="frantsesa" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Korroazje" title="Korroazje – mendebaldeko frisiera" lang="fy" hreflang="fy" data-title="Korroazje" data-language-autonym="Frysk" data-language-local-name="mendebaldeko frisiera" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Creimeadh" title="Creimeadh – irlandera" lang="ga" hreflang="ga" data-title="Creimeadh" data-language-autonym="Gaeilge" data-language-local-name="irlandera" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Corrosi%C3%B3n" title="Corrosión – galiziera" lang="gl" hreflang="gl" data-title="Corrosión" data-language-autonym="Galego" data-language-local-name="galiziera" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A7%D7%95%D7%A8%D7%95%D7%96%D7%99%D7%94" title="קורוזיה – hebreera" lang="he" hreflang="he" data-title="קורוזיה" data-language-autonym="עברית" data-language-local-name="hebreera" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A4%82%E0%A4%95%E0%A5%8D%E0%A4%B7%E0%A4%BE%E0%A4%B0%E0%A4%A3" title="संक्षारण – hindia" lang="hi" hreflang="hi" data-title="संक्षारण" data-language-autonym="हिन्दी" data-language-local-name="hindia" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Korozija" title="Korozija – kroaziera" lang="hr" hreflang="hr" data-title="Korozija" data-language-autonym="Hrvatski" data-language-local-name="kroaziera" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Korr%C3%B3zi%C3%B3" title="Korrózió – hungariera" lang="hu" hreflang="hu" data-title="Korrózió" data-language-autonym="Magyar" data-language-local-name="hungariera" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BF%D5%B8%D5%BC%D5%B8%D5%A6%D5%AB%D5%A1" title="Կոռոզիա – armeniera" lang="hy" hreflang="hy" data-title="Կոռոզիա" data-language-autonym="Հայերեն" data-language-local-name="armeniera" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Korosi" title="Korosi – indonesiera" lang="id" hreflang="id" data-title="Korosi" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiera" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Korodo" title="Korodo – idoa" lang="io" hreflang="io" data-title="Korodo" data-language-autonym="Ido" data-language-local-name="idoa" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/T%C3%A6ring" title="Tæring – islandiera" lang="is" hreflang="is" data-title="Tæring" data-language-autonym="Íslenska" data-language-local-name="islandiera" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Corrosione" title="Corrosione – italiera" lang="it" hreflang="it" data-title="Corrosione" data-language-autonym="Italiano" data-language-local-name="italiera" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E8%85%90%E9%A3%9F" title="腐食 – japoniera" lang="ja" hreflang="ja" data-title="腐食" data-language-autonym="日本語" data-language-local-name="japoniera" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Korosi" title="Korosi – javera" lang="jv" hreflang="jv" data-title="Korosi" data-language-autonym="Jawa" data-language-local-name="javera" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%99%E1%83%9D%E1%83%A0%E1%83%9D%E1%83%96%E1%83%98%E1%83%90" title="კოროზია – georgiera" lang="ka" hreflang="ka" data-title="კოროზია" data-language-autonym="ქართული" data-language-local-name="georgiera" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%96%D0%B5%D0%B3%D1%96%D0%B4%D0%B5" title="Жегіде – kazakhera" lang="kk" hreflang="kk" data-title="Жегіде" data-language-autonym="Қазақша" data-language-local-name="kazakhera" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B6%80%EC%8B%9D" title="부식 – koreera" lang="ko" hreflang="ko" data-title="부식" data-language-autonym="한국어" data-language-local-name="koreera" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Korozyon" title="Korozyon – kurduera" lang="ku" hreflang="ku" data-title="Korozyon" data-language-autonym="Kurdî" data-language-local-name="kurduera" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9A%D0%BE%D1%80%D1%80%D0%BE%D0%B7%D0%B8%D1%8F" title="Коррозия – kirgizera" lang="ky" hreflang="ky" data-title="Коррозия" data-language-autonym="Кыргызча" data-language-local-name="kirgizera" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Korozija" title="Korozija – lituaniera" lang="lt" hreflang="lt" data-title="Korozija" data-language-autonym="Lietuvių" data-language-local-name="lituaniera" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Korozija" title="Korozija – letoniera" lang="lv" hreflang="lv" data-title="Korozija" data-language-autonym="Latviešu" data-language-local-name="letoniera" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9A%D0%BE%D1%80%D0%BE%D0%B7%D0%B8%D1%98%D0%B0" title="Корозија – mazedoniera" lang="mk" hreflang="mk" data-title="Корозија" data-language-autonym="Македонски" data-language-local-name="mazedoniera" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B2%E0%B5%8B%E0%B4%B9%E0%B4%A8%E0%B4%BE%E0%B4%B6%E0%B4%A8%E0%B4%82" title="ലോഹനാശനം – malabarera" lang="ml" hreflang="ml" data-title="ലോഹനാശനം" data-language-autonym="മലയാളം" data-language-local-name="malabarera" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%97%D1%8D%D0%B2%D1%80%D1%8D%D0%BB%D1%82" title="Зэврэлт – mongoliera" lang="mn" hreflang="mn" data-title="Зэврэлт" data-language-autonym="Монгол" data-language-local-name="mongoliera" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Pengakisan" title="Pengakisan – malaysiera" lang="ms" hreflang="ms" data-title="Pengakisan" data-language-autonym="Bahasa Melayu" data-language-local-name="malaysiera" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-myv mw-list-item"><a href="https://myv.wikipedia.org/wiki/%D0%A7%D0%B5%D0%BC%D0%B5%D0%BD%D1%8C_(%D0%BA%D1%88%D0%BD%D0%B8%D0%BF%D0%BE%D0%BD%D0%B0%D1%82)" title="Чемень (кшнипонат) – erziera" lang="myv" hreflang="myv" data-title="Чемень (кшнипонат)" data-language-autonym="Эрзянь" data-language-local-name="erziera" class="interlanguage-link-target"><span>Эрзянь</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Corrosie" title="Corrosie – nederlandera" lang="nl" hreflang="nl" data-title="Corrosie" data-language-autonym="Nederlands" data-language-local-name="nederlandera" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Korrosjon" title="Korrosjon – nynorsk (norvegiera)" lang="nn" hreflang="nn" data-title="Korrosjon" data-language-autonym="Norsk nynorsk" data-language-local-name="nynorsk (norvegiera)" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Korrosjon" title="Korrosjon – bokmål (norvegiera)" lang="nb" hreflang="nb" data-title="Korrosjon" data-language-autonym="Norsk bokmål" data-language-local-name="bokmål (norvegiera)" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Corrosion" title="Corrosion – okzitaniera" lang="oc" hreflang="oc" data-title="Corrosion" data-language-autonym="Occitan" data-language-local-name="okzitaniera" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%9C%E0%A8%BC%E0%A9%B0%E0%A8%97" title="ਜ਼ੰਗ – punjabera" lang="pa" hreflang="pa" data-title="ਜ਼ੰਗ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="punjabera" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Korozja" title="Korozja – poloniera" lang="pl" hreflang="pl" data-title="Korozja" data-language-autonym="Polski" data-language-local-name="poloniera" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Corros%C3%A3o" title="Corrosão – portugesa" lang="pt" hreflang="pt" data-title="Corrosão" data-language-autonym="Português" data-language-local-name="portugesa" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Coroziune" title="Coroziune – errumaniera" lang="ro" hreflang="ro" data-title="Coroziune" data-language-autonym="Română" data-language-local-name="errumaniera" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9A%D0%BE%D1%80%D1%80%D0%BE%D0%B7%D0%B8%D1%8F" title="Коррозия – errusiera" lang="ru" hreflang="ru" data-title="Коррозия" data-language-autonym="Русский" data-language-local-name="errusiera" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Korozija" title="Korozija – serbokroaziera" lang="sh" hreflang="sh" data-title="Korozija" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbokroaziera" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Corrosion" title="Corrosion – Simple English" lang="en-simple" hreflang="en-simple" data-title="Corrosion" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Kor%C3%B3zia" title="Korózia – eslovakiera" lang="sk" hreflang="sk" data-title="Korózia" data-language-autonym="Slovenčina" data-language-local-name="eslovakiera" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Korozija" title="Korozija – esloveniera" lang="sl" hreflang="sl" data-title="Korozija" data-language-autonym="Slovenščina" data-language-local-name="esloveniera" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Kun%27ura" title="Kun'ura – shonera" lang="sn" hreflang="sn" data-title="Kun'ura" data-language-autonym="ChiShona" data-language-local-name="shonera" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Korrozioni" title="Korrozioni – albaniera" lang="sq" hreflang="sq" data-title="Korrozioni" data-language-autonym="Shqip" data-language-local-name="albaniera" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Korozija" title="Korozija – serbiera" lang="sr" hreflang="sr" data-title="Korozija" data-language-autonym="Српски / srpski" data-language-local-name="serbiera" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Korosi" title="Korosi – sundanera" lang="su" hreflang="su" data-title="Korosi" data-language-autonym="Sunda" data-language-local-name="sundanera" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Korrosion" title="Korrosion – suediera" lang="sv" hreflang="sv" data-title="Korrosion" data-language-autonym="Svenska" data-language-local-name="suediera" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%85%E0%AE%B0%E0%AE%BF%E0%AE%AE%E0%AE%BE%E0%AE%A9%E0%AE%AE%E0%AF%8D" title="அரிமானம் – tamilera" lang="ta" hreflang="ta" data-title="அரிமானம்" data-language-autonym="தமிழ்" data-language-local-name="tamilera" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%81%E0%B8%B1%E0%B8%94%E0%B8%81%E0%B8%A3%E0%B9%88%E0%B8%AD%E0%B8%99" title="การกัดกร่อน – thailandiera" lang="th" hreflang="th" data-title="การกัดกร่อน" data-language-autonym="ไทย" data-language-local-name="thailandiera" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Korozyon" title="Korozyon – turkiera" lang="tr" hreflang="tr" data-title="Korozyon" data-language-autonym="Türkçe" data-language-local-name="turkiera" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9A%D0%BE%D1%80%D0%BE%D0%B7%D1%96%D1%8F" title="Корозія – ukrainera" lang="uk" hreflang="uk" data-title="Корозія" data-language-autonym="Українська" data-language-local-name="ukrainera" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Korroziya" title="Korroziya – uzbekera" lang="uz" hreflang="uz" data-title="Korroziya" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbekera" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/%C4%82n_m%C3%B2n" title="Ăn mòn – vietnamera" lang="vi" hreflang="vi" data-title="Ăn mòn" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamera" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E8%85%90%E8%9A%80" title="腐蚀 – wu txinera" lang="wuu" hreflang="wuu" data-title="腐蚀" data-language-autonym="吴语" data-language-local-name="wu txinera" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/Myaex" title="Myaex – zhuangera" lang="za" hreflang="za" data-title="Myaex" data-language-autonym="Vahcuengh" data-language-local-name="zhuangera" class="interlanguage-link-target"><span>Vahcuengh</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%85%90%E8%9A%80" title="腐蚀 – txinera" lang="zh" hreflang="zh" data-title="腐蚀" data-language-autonym="中文" data-language-local-name="txinera" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Se%E2%81%BF-sian" title="Seⁿ-sian – Minnan" lang="nan" hreflang="nan" data-title="Seⁿ-sian" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E8%85%90%E8%9D%95" title="腐蝕 – kantonera" lang="yue" hreflang="yue" data-title="腐蝕" data-language-autonym="粵語" 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src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Hezkuntza_Programa_12-16_ikonoa.png/19px-Hezkuntza_Programa_12-16_ikonoa.png" decoding="async" width="19" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Hezkuntza_Programa_12-16_ikonoa.png/28px-Hezkuntza_Programa_12-16_ikonoa.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Hezkuntza_Programa_12-16_ikonoa.png/38px-Hezkuntza_Programa_12-16_ikonoa.png 2x" data-file-width="747" data-file-height="794" /></a></span></div></div> </div> <div id="siteSub" class="noprint">Wikipedia, Entziklopedia askea</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="eu" dir="ltr"><p class="mw-empty-elt"> </p> <figure typeof="mw:File/Thumb"><a href="/wiki/Fitxategi:Corrosion.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/Corrosion.jpg/200px-Corrosion.jpg" decoding="async" width="200" height="150" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/Corrosion.jpg/300px-Corrosion.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/97/Corrosion.jpg/400px-Corrosion.jpg 2x" data-file-width="1024" data-file-height="768" /></a><figcaption><a href="/wiki/Metal" title="Metal">Metal</a> baten korrosioa.</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/Fitxategi:GHS-pictogram-acid.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/200px-GHS-pictogram-acid.svg.png" decoding="async" width="200" height="200" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/300px-GHS-pictogram-acid.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/400px-GHS-pictogram-acid.svg.png 2x" data-file-width="724" data-file-height="724" /></a><figcaption>Substantzia korrosiboen arrisku-ikurra</figcaption></figure> <p><b>Korrosioa</b> inguruneko <a href="/wiki/Fisika" title="Fisika">agente fisikoek</a> edo <a href="/wiki/Sustantzia_kimiko" class="mw-redirect" title="Sustantzia kimiko">kimikoek</a> material baten azalean eragindako aldaketa da, materiala narriatzea, deskonposatzea edo desegitea dakarrena. </p><p>Korrosioa <a href="/wiki/Erreakzio_kimiko" title="Erreakzio kimiko">erreakzio kimikoen</a> ondorioz edo <a href="/w/index.php?title=Erreakzio_elektrokimiko&action=edit&redlink=1" class="new" title="Erreakzio elektrokimiko (sortu gabe)">erreakzio elektrokimikoen</a> ondorioz gertatu ohi da, baina erreakzio fisikoek (<a href="/wiki/Tentsio_mekaniko" title="Tentsio mekaniko">tentsio mekanikoek</a>, adibidez) eta <a href="/wiki/Mikroorganismo" class="mw-redirect" title="Mikroorganismo">mikroorganismoek</a> ere eragin hori bera izan dezakete zenbait metaletan. <a href="/wiki/Erreakzio_kimiko" title="Erreakzio kimiko">Erreakzio kimikoen</a> ondorioz gertatzen den korrosioan, <a href="/wiki/Aire" title="Aire">airearen</a> <a href="/wiki/Oxigeno" title="Oxigeno">oxigenoak</a> eragiten die kaltea metalei, <a href="/wiki/Herdoiltze" class="mw-redirect" title="Herdoiltze">herdoildu</a> egiten baititu. Metal-mota batzuetan, herdoildutako geruza erori egiten da, eta oxidazio-prozesua behin eta berriro errepikatzen da metala erabat hondatzen den arte. Beste metal batzuetan, berriz, geruza bakarra hondatzen du oxigenoak, eta geruza horrek korrosioaren kontrako babesa ematen dio metalari. Korrosio elektrokimikoa metalaren eta metala dagoen ingurunearen artean eratzen diren korronte elektrikoek sortzen dute. </p><p>Metalak korrosiotik babesteko, hiru bide daude: metala korrosioak hondatzen ez duen gai batez estaltzea, gainazalean babes-geruza bat ezartzea alegia; korrosioa eragiten duten gaien lana galarazteko edo moteltzeko sistemak erabiltzea; eta, korronte elektrikoak korrosioa eragin ez dezan, metala katodoarekin lotzea. </p><p>Korrosioa prozesu naturala da non metalak kimikoki egonkorragoa den egitura osatzen duen, normalean oxido, hidroxido edo sulfuro bezalakoak. Ingurunearekin erreakzio kimikoak edo elektrokimikoak egitearen bidez materialaren suntsipenari deritzo korrosioa. Orokorrean, korrosioa faboratuta dago, izan ere, Gibbs-en energia askea balore negatiboak hartzen ditu. Hau ondo ikus daiteke Ellinghan diagrametan, non, Gibbs energia askea irudikatuta dagoen tenperaturarekiko. </p><p>Korrosioaren esanahirik ohikoena metalaren oxidazio elektrokimikoa da ,oxido edo sulfuroek oxidatzaile bezala jokatzen dutenean alegia metalaren elektroiak hartuz. Metalen korrosioaren adibide garbienetakoa burdinari gertatzen zaiona da. Burdinak korrosioaren ondorioz oxido eta gatz desberdinak produzitzen ditu eta ondorioz laranja koloreko geruza bat sortzen da. Hala ere, korrosioa ez da bakarrik material metalikoetan ematen, material polimeriko zein zeramikoetan ere eman egiten da korrosioa, nahiz eta kasu hauetarako degradazio terminoa egokiagoa den. Korrosioak asko degradatu egiten ditu material bakoitzak izan ditzakeen propietateak, hala nola talkarekiko erresistentzia, gas eta likidoekiko erresistentzia… </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Korrosioa_saihesteko_mekanismoak">Korrosioa saihesteko mekanismoak</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=1" title="Aldatu atal hau: «Korrosioa saihesteko mekanismoak»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=1" title="Edit section's source code: Korrosioa saihesteko mekanismoak"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Zenbait materialek korrosioa pairatzen dute airearekin kontaktuan egoterakoan baina beste material askotan korrosioa gertatzeko substantzia jakin batzuenganako kontaktu zuzena izan behar dute.  Korrosioa difusioz kontrolatutako prozesua denez eta materialen gainazaletan gertatzen denez, pasibazioa eta konbertsio kromatikoa bezalako prozesuen bitartez korrosioarekiko erresistentzia areagotu daiteke materialetan. </p><p>Korrosioari aurre egiteko, teknika desberdinak erabili daitezke. Posiblea bada, oxidatzen ez diren materialak (zinetika edo termodinamikagatik) erabili daitezke. Bestela, beste zenbait teknika erabili daitezke materiala ez degradatzeko. Metalen kasuan, irtenbide bat galvanizazioa da, non, pieza metalikoa (erraz oxidatzen den metala duena) ioi baten bainuan sartzen da. Korronte elektriko baten bidez (tentsioa ioi horren erredukziozko potentzialaren araberakoa izanik) ioia erreduzitzen da piezaren gainean pieza babestuta geratuz. Zinka nahiko erabilia da, izan ere, metal honek pasibazioa pairatzen du. </p><p>Sakrifiziozko anodoa beste teknika erabilia da, non, gure pieza metalikoa baino errazen oxidatzen den pieza metalikoa elektrikoki konektatuta dauden. Horrela, gure pieza oxidatu beharrean, sakriziozko anodoa oxidatzen da.<br /> </p> <div class="mw-heading mw-heading2"><h2 id="Korrosio_galvanikoa">Korrosio galvanikoa</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=2" title="Aldatu atal hau: «Korrosio galvanikoa»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=2" title="Edit section's source code: Korrosio galvanikoa"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Korrosio galvanikoa gertatzen da bi metal ezberdin lotura fisiko edo elektrikoa dutenean eta elektrolito berean sartuta daudenean edo metal bera dagoenean kontzentrazio desberdineko elektrolitoan. Bikote galvanikoan, metal aktiboaren korrosioa gertatzen da eta metal nobleenaren korrosioa gertatzen da. Bi metal ezberdin aukeratzeko, serie galvanikoa aukeratzen da. Zinka erabili ohi da sakrifizio anodo bezala egitura altzairuekin. Gainera, korrosio galvanikoa garrantzitsua da itsas industrian. </p><p>Anodoaren tamainak, espezie metalikoak eta operazio baldintzek korrosioan eragiten dute. Edozein ingurunean metal bat beste bat baino nobleago edo aktiboagoa da ioiak gainazalera nola atxikitzen diren arabera. Metal nobleak metal aktibotik elektroiak hartuko ditu. Masa aldaketa erresultantea edo korronte elektrikoa neurtu daiteke materialen hierarkia batekin eta honi serie galvanikoa deritzo. Honekin, korrosioa ulertu daiteke. </p> <div class="mw-heading mw-heading2"><h2 id="Korrosioaren_erauzketa">Korrosioaren erauzketa</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=3" title="Aldatu atal hau: «Korrosioaren erauzketa»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=3" title="Edit section's source code: Korrosioaren erauzketa"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Zenbait kasutan posible liteke korrosioaren produktu oxidatuak erauztea. Adibide batzuk jartzearren, burdin oxidodun materialetatik erauzteko azido fosforikoa aplikatzen da materialaren gainazalean. Material oxidatuaren erauzketak ez dauka zerikusik elektrogarbiketarekin. Elektrogarbiketak metalaren barneko zenbait geruza kentzen ditu gainazala leunagoa egiteko helburuarekin.<br /> </p> <div class="mw-heading mw-heading2"><h2 id="Korrosioarenganako_erresistentzia">Korrosioarenganako erresistentzia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=4" title="Aldatu atal hau: «Korrosioarenganako erresistentzia»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=4" title="Edit section's source code: Korrosioarenganako erresistentzia"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Material metalikoen artean, metal batzuek korrosioarenganako erresistentzia handiagoa dute beste batzuek baino. </p> <ul><li>Propietate kimiko intrintsekoak: Korrosioarekiko erresistentzia handiena erakusten duten materialek ez dute termodinamikoki faboratuta dagoen erreakziorik. Esaterako, urre eta platinodun oxidatu osteko produktuek metal puruetan deskonposatzeko joera izaten dute eta horren ondorioz metal purua lor daiteke lurretik. Beste metal askok ordea, zinetikoki motelak diren erreakzioak burutzen dituzte oxidatzailearekin, nahiz eta batzuetan erreakzioa termodinamikoki faboratua izan. Horien artean zinka, magnesioa eta kadmioa bezalako metalak ageri dira. Nahiz eta metal hauen oxidazio prozesua gelditzen ez den prozesua den, oso abiadura motelean gertatzen dela esan daiteke. Horien arteko adibiderik muturrekoena grafitoaren kasua da.</li> <li>Pasibazioa: Pasibazioa metalen gainazaletan eratzen den  korrosio produktuen geruza ultrafinari dagokio. Pasibatutako geruzaren eta metalaren egiturak desberdinak dira. Pasibatutako geruza ez da beroketa gauzatu ondoren sortutako oxido geruza berdina, pasibatutako geruza deformatu edo erauzterakoan berriro ere agertzen den bitartean oxidatutako geruza ez da berriz ere konpontzen. Ingurugiroan, pH leun batean pasibatzen diren materialak aluminioa, altzairu herdoilgaitza, titanioa eta silizioa dira.</li></ul> <p>Pourbaix diagramen bidez pH-aren balio desberdinek pasibazioan duten eragina aztertu egiten da. Hala ere, beste zenbait faktoreek eragin handia izan dezakete. Adibidez, aluminioaren eta zinkaren kasuan pH balio altuek pasibazioa inhibitu egiten dute. Altzairu herdoilgaitzaren kasuan ordea pH balio baxuek edo kloruroen presentziak, etab… </p> <div class="mw-heading mw-heading2"><h2 id="Tenperatura_altuko_korrosioa">Tenperatura altuko korrosioa</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=5" title="Aldatu atal hau: «Tenperatura altuko korrosioa»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=5" title="Edit section's source code: Tenperatura altuko korrosioa"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Tenperatura altuko korrosioa material baten degradazioa da beroarengatik. Korrosioaren forma ez galvaniko hau oxigeno edo sufre bezalako konposatuak dituen atmosfera beroan egotean. Adibidez, espazioan erabili beharreko materialak edo kotxeen motorrak zeinak denbora luzez egon behar dira tenperatura altu eta atmosfera oxidatzaile batekin kontaktuan. </p><p>Tenperatura altuko korrosioak ingeniaritzako abantaila bat izan daiteke. Oxidoen eraketa gainazalean, metal batzuetan era dezake gainazalean segurtasun geruza bat atmosferaz babesteko.   </p> <div class="mw-heading mw-heading2"><h2 id="Korrosio_mikrobianoa">Korrosio mikrobianoa</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=6" title="Aldatu atal hau: «Korrosio mikrobianoa»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=6" title="Edit section's source code: Korrosio mikrobianoa"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Korrosio mikrobianoa, edo mikrobiologikoki eragindako korrosioa (MIC), normalean kimioautotrofoek eragindako edo larriagotutako korrosio mota bat da. Korrosio mota hau material metaliko zein ez-metalikoei aplika daitezke, oxigenoaren presentzian edo presentziarik gabe. Bakterio sulfato-erreduzitzaileak baldintza anaerobikoetan aktiboak dira, hidrogeno sulfuroa eratuz, eta sulfuroek eragindako tentsio-pitzadurak sortzen dira (sulfide stress cracking, SSC). Baldintza aerobikoetan, zenbait bakteria motek burdina burdin oxido eta hidroxidoetara zuzenean oxida ditzakete, eta beste bakterio mota batzuek sufrea oxida dezakete eta azido sulfurikoa eratu, sulfuro korrosio biogenikoa eraginez. Korrosio-produktuak dauden geruzetan kontzentrazio-zelulak eratu daitezke, materialaren korrosio lokalizatua (puntu jakin batean) eratuz. </p><p>MIC mota bat azeleratutako itsasbehera-korrosioa (accelerated low-water corrosion , ALWC) da, MIC mota oso kaltegarri bat da, itsasbeheraren alboan dauden altzairuzko zutabeei eragiten diotenak. Laranja koloreko lohi batek bereizten du, hau hidrogeno sulfuro usaina daukala azidoz tratatzean. Korrosio-abiadurak kasu honetan nahiko altuak dira eta altzairuaren korrosio-tarteak azkar gainditu daitezke, altzairuzko zutabeen apurketa goiztiarra eraginez. Zutabe kapadunak eta babes katodikoa dauzkatenak eraikuntza-unean ez dute ALWC-rik jasango. Zutabe desbabestuen kasuan, sakrifiziozko anodoak instala daitezke gune kaltetuetan, korrosio-prozesua inhibitzeko. Halaber, kaltetutako guneetan, anodo inerte bati korronte elektrikoa aplikatu ahal zaio geruza karedun bat eratzeko, materiala eraso gehiagotik babes dezan. </p> <div class="mw-heading mw-heading2"><h2 id="Korrosioa_material_ez_metalikoetan">Korrosioa material ez metalikoetan</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=7" title="Aldatu atal hau: «Korrosioa material ez metalikoetan»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=7" title="Edit section's source code: Korrosioa material ez metalikoetan"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Material zeramiko gehienak pasiboak dira korrosioarekiko. Materialak ondo lotzen dituen lotura kimiko sendoak ez du ia energia kimiko askerik uzten egituran. Material zeramikoetan korrosioa ekiditeko kaltzio oxidoa erabiltzen da materialak uretan duen solugarritasuna murrizteko. </p> <div class="mw-heading mw-heading3"><h3 id="Korrosioa_material_polimerikoetan">Korrosioa material polimerikoetan</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=8" title="Aldatu atal hau: «Korrosioa material polimerikoetan»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=8" title="Edit section's source code: Korrosioa material polimerikoetan"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Polimeroen degradazioak zenbait prozesu konplexu eta zenbaitetan gutxi azaldutakoak hartzen ditu. Orain arteko korrosio prozesu guztiekin alderatuz, polimeroek bide oso desberdinak jarraitzen dituzte korrosioari buruz hitz egiten denean. Polimeroek duten pisu molekular handiaren ondorioz, oso entropia aldaketa txikia irabazi daiteke polimero bat beste substantzia batekin nahasterakoan. Horregatik material polimerikoak nahiko disolbagaitzak dira. </p><p>Material polimerikoetan sortu daitekeen arazo bat materialaren puztea da. Hau gertatzean, molekula txikiak egituraren barnean infiltratu eta jatorrizko egiturak duen erresistentzia eta sendotasuna aldatu egiten du, zenbaitetan bolumen aldaketa nabariak sorraraziz. Beste alde batetik ordea, polimero askotan plastikotasuna igo edo jaisteko substantziak infiltratu egiten dira. </p><p>Material polimerikoen degradaziorik arruntena, polimeroen karbono katearen murrizketa da. Polimeroaren karbono katea murrizteko azaltzen diren mekanismoak oso ohikoak dira prozesu biologikoetan DNA-rengan duten efektua dela eta. Beste batzuen artean, erradiazio ionikoa (gehien bat izpi ultramorez burutua), erradikal askeak eta oxigenoa bezalako erradikal askeak beste batzuen artean. Lehenago aipatutako plastiko gehigarriek prozesu hauek moteldu ditzakete eta erradiazio ultramorea absorbatzen duen pigmentua izan daiteke polimeroaren karbono katearen apurketa ekiditeko erabilitako teknika. </p> <div class="mw-heading mw-heading3"><h3 id="Korrosioa_beiretan">Korrosioa beiretan</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=9" title="Aldatu atal hau: «Korrosioa beiretan»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=9" title="Edit section's source code: Korrosioa beiretan"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Beirek korrosioarekiko erresistentzia handia erakusten dute. Beirek urarenganako erresistentziaren ondorioz industria farmazeutikoan paketatze moduan asko erabiltzen diren materialak dira. Horretaz gainera bete zenbait gas edo likido erreaktiboekiko erresistentzia handia erakusten du. </p><p>Beirek ordea, “beiren gaixotasuna” deritzen arazoa aurkezten dute.Beiren gaixotasuna beiretan aurkitzen diren silikatoen korrosioaren ondorioz gertatzen da disoluzio urtsuetan. Bi mekanismoren bidez gertatzen da beiren korrosioa. Lehenik eta behin difusioz kontrolatutako lixibazioa eta beiraren egituraren disoluzio hidrolitikoa. </p> <div class="mw-heading mw-heading2"><h2 id="Korrosio_ratioa">Korrosio ratioa</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=10" title="Aldatu atal hau: «Korrosio ratioa»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=10" title="Edit section's source code: Korrosio ratioa"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Geruza oxido baten formazioa Deal Grove modeloak deskribatzen du, non, aurresan eta kontrola daiteke geruza horren formazioa hainbat egoeretan. Test erraz batekin egiten da, pisu galera metodoa deitzen dena. Metodoak metal pisatuaren pieza edo aleazioa inguru korrosibo batean jartzen da denbora tarte espezifiko batean, pieza garbitzen da eta pisatzen da. Korrosio ratioa R moduan definitzen da hurrengo ekuazioaren bidez: </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle R={k\cdot W \over p\cdot A\cdot t}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>R</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi>k</mi> <mo>⋅</mo> <mi>W</mi> </mrow> <mrow> <mi>p</mi> <mo>⋅</mo> <mi>A</mi> <mo>⋅</mo> <mi>t</mi> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle R={k\cdot W \over p\cdot A\cdot t}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9ebaf1cc22c0aa5a6638f8d20b4676554bdceba1" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:12.809ex; height:5.843ex;" alt="{\displaystyle R={k\cdot W \over p\cdot A\cdot t}}" /></span> </p><p>k konstante bat da, W masa galera, t esposizio denbora, A esposizio azalera eta p dentsitatea. </p> <div class="mw-heading mw-heading2"><h2 id="Erreferentziak">Erreferentziak</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=11" title="Aldatu atal hau: «Erreferentziak»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=11" title="Edit section's source code: Erreferentziak"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="boilerplate" style="text-align:left; font-size: 90%"> <ul><li>Artikulu honen edukiaren zati bat <i>Lur hiztegi entziklopediko</i>tik edo <i>Lur entziklopedia tematiko</i>tik txertatu zen 2011/12/30 egunean. Egile-eskubideen jabeak, <a href="/wiki/Eusko_Jaurlaritza" title="Eusko Jaurlaritza">Eusko Jaurlaritzak</a>, hiztegi horiek <a rel="nofollow" class="external text" href="http://creativecommons.org/licenses/by/3.0/es/deed.eu">CC-BY 3.0 lizentziarekin</a> argitaratu ditu, <a rel="nofollow" class="external text" href="http://opendata.euskadi.eus/katalogoa/-/lur-entziklopedia-tematikoa/">Open Data Euskadi webgunean</a>.</li></ul></div> <ol><li>Introducción a la ciencia e ingenieria de materiales 2. Editorial Reverte. William D. Callister, Jr. 2007. 592-594</li> <li>https://www.researchgate.net/profile/Juan_Genesca/publication/31633494/figure/fig16/AS:491772817219586@1494259184125/Figura-17-Mecanismo-de-proteccion-catodica-con-anodo-de-sacrificio.png (accssed 29/11).</li> <li>Corrosión y protección galvanica. Luis Bilurbina Alter, Francisco Liesa Mestres y José Ignacio Iribarren Laco. Edicions UPC. 2003. 15-38</li> <li>https://www.bing.com/images/search?view=detailV2&ccid=MAr3RY%2fg&id=F2EF0B8AB4C6874B0AF6F520014746B287D7A2A4&thid=OIP.MAr3RY_g02aJkkH5MIgbogHaKe&mediaurl=https%3a%2f%2fimage.slidesharecdn.com%2ftrabajodiagramasdeellingham-101104170423-phpapp01%2f95%2ftrabajo-diagramas-de-ellingham-7-638.jpg%3fcb%3d1422666551&exph=903&expw=638&q=diagrama+hellingan&simid=608002454515287874&selectedIndex=2&ajaxhist=0 (accessed 29/11).</li> <li>[Fundamentals of corrosion – Mechanisms, Causes and Preventative Methods]. Philip A. Schweitzer, Taylor and Francis Group, LLC (2010) p. 25.</li> <li>Methods of Protecting Against Corrosion Piping Technology & Products, (retrieved January 2012)</li></ol><p> J.E. Breakell, M. Siegwart, K. Foster, D. Marshall, M. Hodgson, R. Cottis, S. Lyon (2005). Management of Accelerated Low Water Corrosion in Steel Maritime Structures, Volume 634 of CIRIA Series.</p><div class="reflist" style="list-style-type: decimal;"> </div> <div class="mw-heading mw-heading2"><h2 id="Kanpo_estekak">Kanpo estekak</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Korrosio&veaction=edit&section=12" title="Aldatu atal hau: «Kanpo estekak»" class="mw-editsection-visualeditor"><span>aldatu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Korrosio&action=edit&section=12" title="Edit section's source code: Kanpo estekak"><span>aldatu iturburu kodea</span></a><span class="mw-editsection-bracket">]</span></span></div> <div style="clear:both;"></div><style data-mw-deduplicate="TemplateStyles:r7786466">.mw-parser-output .mw-authority-control{margin-top:1.5em}.mw-parser-output .mw-authority-control .navbox hr:last-child{display:none}.mw-parser-output .mw-authority-control 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dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}</style></div><div role="navigation" class="navbox" aria-labelledby="Autoritate_kontrola" style="width: inherit;padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th id="Autoritate_kontrola" scope="row" class="navbox-group" style="width:1%;width: 12%; text-align:center;"><a href="/wiki/Laguntza:Autoritate_kontrola" title="Laguntza:Autoritate kontrola">Autoritate kontrola</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><b>Wikimedia proiektuak</b></li> <li><span style="white-space:nowrap;"><span typeof="mw:File"><a href="/wiki/Wikidata" title="Wikidata"><img alt="Wd" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/20px-Wikidata-logo.svg.png" decoding="async" width="20" height="11" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/30px-Wikidata-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/40px-Wikidata-logo.svg.png 2x" data-file-width="1050" data-file-height="590" /></a></span> Datuak:</span> <span class="uid"><a href="https://www.wikidata.org/wiki/Q137056" class="extiw" title="wikidata:Q137056">Q137056</a></span></li> <li><span style="white-space:nowrap;"><span typeof="mw:File"><a href="/wiki/Wikimedia_Commons" title="Commonscat"><img alt="Commonscat" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/15px-Commons-logo.svg.png" decoding="async" width="15" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/23px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> Multimedia:</span> <span class="uid"><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Corrosion">Corrosion</a></span> / <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Special:MediaSearch?type=image&search=%22Q137056%22">Q137056</a></span></span></li></ul> <hr /> <ul><li><b>Identifikadoreak</b></li> <li><span style="white-space:nowrap;"><a href="/wiki/Biblioth%C3%A8que_nationale_de_France" class="mw-redirect" title="Bibliothèque nationale de France">BNF</a>:</span> <span class="uid"><a rel="nofollow" class="external text" href="https://catalogue.bnf.fr/ark:/12148/cb11975888z">11975888z</a> <a rel="nofollow" class="external text" href="http://data.bnf.fr/ark:/12148/cb11975888z">(data)</a></span></li> <li><span 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