{"id":5376,"date":"2019-10-24T04:01:44","date_gmt":"2019-10-24T04:01:44","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5376"},"modified":"2022-06-30T09:03:22","modified_gmt":"2022-06-30T09:03:22","slug":"pourquoi-lacier-inoxydable-rouille-t-il-quest-ce-qui-affaiblit-la-resistance-de-lacier-inoxydable","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/pourquoi-lacier-inoxydable-rouille-t-il-quest-ce-qui-affaiblit-la-resistance-de-lacier-inoxydable\/","title":{"rendered":"Pourquoi l'acier inoxydable rouille-t-il ? Qu'est-ce qui peut affaiblir la r\u00e9sistance de l'acier inoxydable ?"},"content":{"rendered":"<h2>Pourquoi l'acier inoxydable rouille-t-il ? Qu'est-ce qui peut affaiblir la r\u00e9sistance de l'acier inoxydable ?<\/h2>\n<p>Lorsque des taches de rouille brunes sont apparues \u00e0 la surface de l'acier inoxydable, les gens ont \u00e9t\u00e9 stup\u00e9faits : \"L'acier inoxydable ne rouille pas, la rouille n'est pas l'acier inoxydable, c'est peut-\u00eatre un probl\u00e8me avec l'acier.\"<\/p>\n<p><a href=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/10\/rust-in-stainless-steel.jpg\" target=\"_blank\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-5377\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/10\/rust-in-stainless-steel.jpg\" alt=\"rouille en acier inoxydable\" width=\"765\" height=\"592\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/10\/rust-in-stainless-steel.jpg 765w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/10\/rust-in-stainless-steel-300x232.jpg 300w\" sizes=\"(max-width: 765px) 100vw, 765px\" \/><\/a><\/p>\n<p>En fait, il s&#039;agit d&#039;une id\u00e9e fausse unilat\u00e9rale sur le manque de compr\u00e9hension de l&#039;acier inoxydable. L&#039;acier inoxydable rouillera \u00e9galement dans certaines conditions.<\/p>\n<p>L&#039;acier inoxydable a la capacit\u00e9 de r\u00e9sister \u00e0 l&#039;oxydation atmosph\u00e9rique, c&#039;est-\u00e0-dire \u00e0 la rouille, et a \u00e9galement la capacit\u00e9 de r\u00e9sister \u00e0 la corrosion dans un milieu contenant de l&#039;acide, des alcalis et du sel, c&#039;est-\u00e0-dire une r\u00e9sistance \u00e0 la corrosion. Cependant, le degr\u00e9 de r\u00e9sistance \u00e0 la corrosion varie avec la composition chimique de l&#039;acier lui-m\u00eame, l&#039;\u00e9tat de chacun, les conditions d&#039;utilisation et le type de milieu environnemental.<\/p>\n<p>Par exemple, le mat\u00e9riau 304 a une r\u00e9sistance \u00e0 la corrosion absolument excellente dans une atmosph\u00e8re s\u00e8che et propre, mais il est d\u00e9plac\u00e9 vers la zone baln\u00e9aire et rouillera bient\u00f4t dans le brouillard marin contenant une grande quantit\u00e9 de sel. Par cons\u00e9quent, ce n&#039;est pas n&#039;importe quel type d&#039;acier inoxydable qui peut r\u00e9sister \u00e0 la corrosion et \u00e0 la rouille \u00e0 tout moment.<\/p>\n<p>L&#039;acier inoxydable est un film d&#039;oxyde riche en chrome tr\u00e8s fin, solide et stable (film protecteur) form\u00e9 \u00e0 la surface pour emp\u00eacher les atomes d&#039;oxyg\u00e8ne de continuer \u00e0 s&#039;infiltrer et \u00e0 s&#039;oxyder, obtenant ainsi une r\u00e9sistance \u00e0 la corrosion. Pour une raison quelconque, le film est constamment d\u00e9truit. L&#039;air ou le liquide neutralise les atomes d&#039;oxyg\u00e8ne et les atomes de fer sont s\u00e9par\u00e9s en continu pour former de l&#039;oxyde de fer en vrac. La surface m\u00e9tallique est \u00e9galement continuellement corrod\u00e9e.<\/p>\n<p><strong>Il existe de nombreuses formes de tels dommages du film de surface, et les \u00e9l\u00e9ments suivants sont courants dans la vie quotidienne\u00a0:<\/strong><\/p>\n<ul>\n<li>1. La surface de l&#039;acier inoxydable accumule de la poussi\u00e8re ou d&#039;autres particules m\u00e9talliques attach\u00e9es \u00e0 d&#039;autres \u00e9l\u00e9ments m\u00e9talliques. Dans l&#039;air humide, l&#039;eau condens\u00e9e entre le mat\u00e9riau attach\u00e9 et l&#039;acier inoxydable relie les deux dans une micro-batterie, d\u00e9clenchant une r\u00e9action \u00e9lectrochimique. Le film protecteur est d\u00e9truit, ce qui est appel\u00e9 corrosion \u00e9lectrochimique.<\/li>\n<li>2. La surface de l&#039;acier inoxydable adh\u00e8re au jus organique, qui forme un acide organique en pr\u00e9sence d&#039;eau et d&#039;oxyg\u00e8ne, et forme un acide organique pour corroder la surface du m\u00e9tal pendant longtemps.<\/li>\n<li>3. La surface de l&#039;acier inoxydable adh\u00e8re aux substances acides, alcalines et salines (telles que l&#039;eau alcaline et l&#039;eau de chaux pulv\u00e9ris\u00e9e sur le mur) pour provoquer une corrosion locale.<\/li>\n<li>4. Dans l&#039;air pollu\u00e9 (l&#039;atmosph\u00e8re contenant une grande quantit\u00e9 de sulfures, d&#039;oxydes, d&#039;oxyde d&#039;hydrog\u00e8ne), dans le cas de l&#039;eau condens\u00e9e, de l&#039;acide sulfurique, de l&#039;acide nitrique, des taches liquides d&#039;acide ac\u00e9tique se forment, provoquant une corrosion chimique.<\/li>\n<\/ul>\n<p>Tout ce qui pr\u00e9c\u00e8de peut endommager le film protecteur de surface en acier inoxydable et provoquer de la corrosion. Par cons\u00e9quent, afin de garantir que la surface m\u00e9tallique est brillante en permanence et non rouill\u00e9e, nous recommandons :<\/p>\n<ol>\n<li>La surface d\u00e9corative en acier inoxydable doit \u00eatre nettoy\u00e9e et frott\u00e9e fr\u00e9quemment pour \u00e9liminer les d\u00e9p\u00f4ts et \u00e9liminer les facteurs externes qui causent la corrosion.<\/li>\n<li>Il existe sur le march\u00e9 des types d&#039;acier inoxydable 201 et 202 faciles \u00e0 rouiller dans la zone c\u00f4ti\u00e8re, adapt\u00e9s \u00e0 une utilisation dans l&#039;environnement sans pollution industrielle ni corrosion de l&#039;air.<\/li>\n<li>La zone riveraine doit \u00eatre en acier inoxydable 304, r\u00e9sistant \u00e0 la corrosion par l&#039;eau de mer.<\/li>\n<\/ol>\n<p>Post\u00e9 par\u00a0<a href=\"https:\/\/www.kaysuns.com\/fr\/tubes-en-acier-inoxydable\/\" target=\"_blank\">fournisseur de tubes en acier inoxydable<\/a>\u00a0et\u00a0<a href=\"https:\/\/www.kaysuns.com\/fr\/tuyaux-en-acier-inoxydable\/\" target=\"_blank\">fournisseur de tuyaux en acier inoxydable<\/a>\u00a0KAYSUNS.<\/p>","protected":false},"featured_media":5377,"template":"","categories":[186],"tags":[],"class_list":["post-5376","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Why Does Stainless Steel Rust? 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