{"id":888907908,"date":"2025-03-11T05:27:09","date_gmt":"2025-03-11T05:27:09","guid":{"rendered":"https:\/\/zineti.com\/tipos-de-corrosion\/"},"modified":"2025-03-24T16:42:55","modified_gmt":"2025-03-24T16:42:55","slug":"types-de-corrosion","status":"publish","type":"post","link":"https:\/\/www.zineti.com\/fr\/types-de-corrosion\/","title":{"rendered":"Types de corrosion"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">La corrosion se produit en pr\u00e9sence de solutions aqueuses ou d\u2019\u00e9lectrolytes et constitue la principale cause de d\u00e9gradation des m\u00e9taux. Selon leur aspect et leur m\u00e9canisme, les types de corrosion les plus courants peuvent \u00eatre class\u00e9s comme suit :<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"531\" src=\"https:\/\/zineti.com\/wp-content\/uploads\/corrosion-005.webp\" alt=\"\" class=\"wp-image-888904148\" style=\"width:526px;height:auto\" srcset=\"https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-005.webp 800w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-005-300x199.webp 300w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-005-768x510.webp 768w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-005-480x319.webp 480w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-005-600x398.webp 600w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-005-64x42.webp 64w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><br><strong><em>1)Uniform corrosion:<\/em><\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">l s\u2019agit de la forme de corrosion la plus courante et elle se caract\u00e9rise par une r\u00e9action \u00e9lectrochimique qui se produit de mani\u00e8re homog\u00e8ne sur toute la surface expos\u00e9e du m\u00e9tal. Au fil du temps, cela provoque un amincissement progressif jusqu\u2019\u00e0 ce que le mat\u00e9riau se rompe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;La corrosion uniforme peut \u00eatre \u00e9vit\u00e9e ou r\u00e9duite par la s\u00e9lection de mat\u00e9riaux appropri\u00e9s, l\u2019utilisation de rev\u00eatements, l\u2019application d\u2019inhibiteurs ou la protection cathodique.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"430\" height=\"425\" src=\"https:\/\/zineti.com\/wp-content\/uploads\/corrosion-006.webp\" alt=\"\" class=\"wp-image-888904151\" style=\"width:171px;height:auto\" srcset=\"https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-006.webp 430w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-006-300x297.webp 300w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-006-100x100.webp 100w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-006-64x63.webp 64w\" sizes=\"(max-width: 430px) 100vw, 430px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><br><strong><em>2) Corrosion localis\u00e9e :<\/em><\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em><br><strong><em>2.1 Corrosion microscopique<\/em><\/strong><\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>2.1.1 corrosion intergranulaire<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>\u00a0Ce type de corrosion attaque pr\u00e9f\u00e9rentiellement les joints de grains d&rsquo;une structure m\u00e9tallique, tandis que la matrice des grains reste relativement intacte. En cons\u00e9quence, le mat\u00e9riau s\u2019affaiblit et perd sa r\u00e9sistance m\u00e9canique, provoquant une s\u00e9paration des grains et une d\u00e9sint\u00e9gration de l\u2019alliage.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"490\" height=\"371\" src=\"https:\/\/zineti.com\/wp-content\/uploads\/corrosion-007.webp\" alt=\"\" class=\"wp-image-888904154\" style=\"width:302px;height:auto\" srcset=\"https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-007.webp 490w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-007-300x227.webp 300w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-007-480x363.webp 480w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-007-64x48.webp 64w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em><br><strong><em>2.2 Corrosion macroscopique\u00a0<\/em><\/strong><\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em><br>2.2.1 <strong><em>galvanic corrosion<\/em><\/strong><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Cela se produit lorsque deux m\u00e9taux diff\u00e9rents sont en contact \u00e9lectrique dans un milieu conducteur ou corrosif, g\u00e9n\u00e9rant une diff\u00e9rence de potentiel entre eux. Ce processus entra\u00eene un flux d\u2019\u00e9lectrons qui acc\u00e9l\u00e8re la corrosion du m\u00e9tal anodique tout en prot\u00e9geant le m\u00e9tal cathodique.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Les s\u00e9ries galvaniques permettent de pr\u00e9dire le risque de corrosion galvanique entre deux m\u00e9taux : plus la s\u00e9paration entre eux dans la s\u00e9rie est grande, plus la d\u00e9t\u00e9rioration du mat\u00e9riau anodique est intense et plus la protection du mat\u00e9riau cathodique est grande.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"490\" height=\"371\" src=\"https:\/\/zineti.com\/wp-content\/uploads\/corrosion-008.webp\" alt=\"\" class=\"wp-image-888904157\" style=\"width:289px;height:auto\" srcset=\"https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-008.webp 490w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-008-300x227.webp 300w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-008-480x363.webp 480w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-008-64x48.webp 64w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em><br>2.2.2 <strong><em>Corrosion par piq\u00fbres<\/em><\/strong><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Il s\u2019agit d\u2019un type d\u2019attaque tr\u00e8s localis\u00e9 qui g\u00e9n\u00e8re de petits trous dans la surface m\u00e9tallique. Pour qu\u2019une cavit\u00e9 soit consid\u00e9r\u00e9e comme une fosse, sa profondeur doit \u00eatre \u00e9gale ou sup\u00e9rieure \u00e0 son diam\u00e8tre.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Ce ph\u00e9nom\u00e8ne se produit dans les m\u00e9taux et alliages passifs lorsqu&rsquo;ils sont expos\u00e9s \u00e0 des environnements contenant des ions agressifs tels que le chlorure, le bromure, l&rsquo;iodure ou le perchlorate, \u00e0 condition que le potentiel du mat\u00e9riau d\u00e9passe le soi-disant \u00ab potentiel de piq\u00fbre \u00bb.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"490\" height=\"371\" src=\"https:\/\/zineti.com\/wp-content\/uploads\/corrosion-009.webp\" alt=\"\" class=\"wp-image-888904160\" style=\"width:300px;height:auto\" srcset=\"https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-009.webp 490w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-009-300x227.webp 300w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-009-480x363.webp 480w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-009-64x48.webp 64w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em><br>2.2.3 <strong><em>\u00e9rosion corrosion<\/em><\/strong><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Cela se produit lorsqu&rsquo;un fluide en mouvement, avec ou sans particules en suspension, use la surface m\u00e9tallique \u00e0 des vitesses sup\u00e9rieures \u00e0 un seuil critique. La vitesse du fluide influence directement le degr\u00e9 de corrosion, car il peut \u00e9liminer les couches protectrices et m\u00eame les mat\u00e9riaux m\u00e9talliques.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"190\" src=\"https:\/\/zineti.com\/wp-content\/uploads\/corrosion-010.webp\" alt=\"\" class=\"wp-image-888904163\" srcset=\"https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-010.webp 900w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-010-300x63.webp 300w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-010-768x162.webp 768w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-010-480x101.webp 480w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-010-600x127.webp 600w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-010-64x14.webp 64w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em><br>\u00a02.2.4 <strong><em>corrosion caverneuse<\/em><\/strong><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Elle se produit dans des espaces \u00e9troits ou confin\u00e9s o\u00f9 le liquide peut p\u00e9n\u00e9trer, mais sa circulation est limit\u00e9e, favorisant l&rsquo;accumulation d&rsquo;agents corrosifs. Il est courant dans les joints de chevauchement, les connexions entre les tubes et les plaques d&rsquo;\u00e9changeurs de chaleur, entre autres.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><br>La protection cathodique peut aider \u00e0 pr\u00e9venir ce type de corrosion en maintenant le potentiel du mat\u00e9riau en dessous du seuil critique.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"273\" height=\"245\" src=\"https:\/\/zineti.com\/wp-content\/uploads\/corrosion-011.webp\" alt=\"\" class=\"wp-image-888904166\" srcset=\"https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-011.webp 273w, https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-011-64x57.webp 64w\" sizes=\"(max-width: 273px) 100vw, 273px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>La corrosion se produit en pr\u00e9sence de solutions aqueuses ou d\u2019\u00e9lectrolytes et constitue la principale cause de d\u00e9gradation des m\u00e9taux. Selon leur aspect et leur m\u00e9canisme, les types de corrosion les plus courants peuvent \u00eatre class\u00e9s comme suit : 1)Uniform corrosion: l s\u2019agit de la forme de corrosion la plus courante et elle se caract\u00e9rise [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":888904147,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","_joinchat":[],"footnotes":""},"categories":[2809],"tags":[],"class_list":["post-888907908","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-information-technique"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Types de corrosion - Zineti<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.zineti.com\/fr\/types-de-corrosion\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Types de corrosion - Zineti\" \/>\n<meta property=\"og:description\" content=\"La corrosion se produit en pr\u00e9sence de solutions aqueuses ou d\u2019\u00e9lectrolytes et constitue la principale cause de d\u00e9gradation des m\u00e9taux. Selon leur aspect et leur m\u00e9canisme, les types de corrosion les plus courants peuvent \u00eatre class\u00e9s comme suit : 1)Uniform corrosion: l s\u2019agit de la forme de corrosion la plus courante et elle se caract\u00e9rise [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.zineti.com\/fr\/types-de-corrosion\/\" \/>\n<meta property=\"og:site_name\" content=\"Zineti\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/people\/ZINETI-SAU-PROTECCIN-CONTRA-LA-CORROSIN\/100064110487457\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-11T05:27:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-24T16:42:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.zineti.com\/wp-content\/uploads\/corrosion-004.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Zineti\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ZinetiAnodes\" \/>\n<meta name=\"twitter:site\" content=\"@ZinetiAnodes\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Zineti\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.zineti.com\\\/fr\\\/types-de-corrosion\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.zineti.com\\\/fr\\\/types-de-corrosion\\\/\"},\"author\":{\"name\":\"Zineti\",\"@id\":\"https:\\\/\\\/www.zineti.com\\\/fr\\\/#\\\/schema\\\/person\\\/3975b164c9708972bc897f4c3c9d3654\"},\"headline\":\"Types de corrosion\",\"datePublished\":\"2025-03-11T05:27:09+00:00\",\"dateModified\":\"2025-03-24T16:42:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.zineti.com\\\/fr\\\/types-de-corrosion\\\/\"},\"wordCount\":536,\"publisher\":{\"@id\":\"https:\\\/\\\/www.zineti.com\\\/fr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.zineti.com\\\/fr\\\/types-de-corrosion\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.zineti.com\\\/wp-content\\\/uploads\\\/corrosion-004.webp\",\"articleSection\":[\"Information technique\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.zineti.com\\\/fr\\\/types-de-corrosion\\\/\",\"url\":\"https:\\\/\\\/www.zineti.com\\\/fr\\\/types-de-corrosion\\\/\",\"name\":\"Types de corrosion - 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