{"id":7701,"date":"2021-05-17T07:22:01","date_gmt":"2021-05-17T07:22:01","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=7701"},"modified":"2025-12-10T03:42:27","modified_gmt":"2025-12-10T03:42:27","slug":"lacier-inoxydable-rouille-t-il-2","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/lacier-inoxydable-rouille-t-il-2\/","title":{"rendered":"L&#039;acier inoxydable rouille-t-il ?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7701\" class=\"elementor elementor-7701\" data-elementor-post-type=\"blog\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f1fc98e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f1fc98e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-bd4a4d0\" data-id=\"bd4a4d0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fc4d0ad elementor-widget elementor-widget-image\" data-id=\"fc4d0ad\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"415\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/05\/Does-Stainless-Steel-Rust-e1765337515538.webp\" class=\"attachment-large size-large wp-image-55211\" alt=\"L&#039;acier inoxydable rouille-t-il ?\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/05\/Does-Stainless-Steel-Rust-e1765337515538.webp 800w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/05\/Does-Stainless-Steel-Rust-e1765337515538-300x156.webp 300w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/05\/Does-Stainless-Steel-Rust-e1765337515538-768x398.webp 768w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/05\/Does-Stainless-Steel-Rust-e1765337515538-18x9.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d7f3453 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d7f3453\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-36917eb\" data-id=\"36917eb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4dbadda elementor-widget elementor-widget-heading\" data-id=\"4dbadda\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">L&#039;acier inoxydable rouille-t-il ?\u200b<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a26fc4f elementor-widget elementor-widget-text-editor\" data-id=\"a26fc4f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Lorsque l'on parle d'acier inoxydable, il s'agit toujours de <a href=\"\/fr\/blog\/acier-inoxydable-de-la-serie-300-acier-inoxydable-austenitique-au-chrome-et-au-nickel\/\" target=\"_blank\" rel=\"noopener\">acier inoxydable aust\u00e9nitique (acier inoxydable de la s\u00e9rie 300)<\/a>qui comprend <a href=\"\/fr\/quest-ce-que-lacier-304\/\" target=\"_blank\" rel=\"noopener\">304<\/a>, <a href=\"\/fr\/quest-ce-que-lacier-316l\/\" target=\"_blank\" rel=\"noopener\">316L<\/a>321, etc. En tant que professionnel <a href=\"https:\/\/www.kaysuns.com\/fr\/tuyaux-en-acier-inoxydable\/\" target=\"_blank\">fournisseur de tuyaux en acier inoxydable<\/a>, on s&#039;est toujours demand\u00e9 si l&#039;inox pouvait rouiller ? Voici la r\u00e9ponse :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d28c76c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d28c76c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e352827\" data-id=\"e352827\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5c135bd elementor-widget elementor-widget-heading\" data-id=\"5c135bd\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">L&#039;acier inoxydable peut rouiller<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d843e2 elementor-widget elementor-widget-text-editor\" data-id=\"4d843e2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.kaysuns.com\/fr\/quest-ce-que-lacier-inoxydable\/\" target=\"_blank\" rel=\"noopener\">Acier inoxydable<\/a> va rouiller et former une sorte d'oxyde \u00e0 la surface. Actuellement, l'acier inoxydable vendu sur le march\u00e9 contient du chrome, un \u00e9l\u00e9ment qui emp\u00eache l'acier de rouiller. Le m\u00e9canisme de r\u00e9sistance \u00e0 la corrosion de l'acier inoxydable repose sur la th\u00e9orie du film de passivation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20a91ab elementor-widget elementor-widget-text-editor\" data-id=\"20a91ab\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Le film dit de passivation est un film mince avec Cr<sub>2<\/sub>O<sub>3<\/sub>. Ce film peut emp\u00eacher l&#039;acier inoxydable de se corroder dans divers supports, ce qui est appel\u00e9 passivation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-72ae680 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"72ae680\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7d737c5\" data-id=\"7d737c5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3377fbd elementor-widget elementor-widget-heading\" data-id=\"3377fbd\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00c0 propos du film de passivation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc60b36 elementor-widget elementor-widget-text-editor\" data-id=\"dc60b36\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Il y a deux raisons \u00e0 la passivation : l&#039;une est que l&#039;acier inoxydable lui-m\u00eame a la capacit\u00e9 d&#039;auto-passivation, et cette capacit\u00e9 sera plus forte avec l&#039;augmentation de la teneur en chrome, le rendant r\u00e9sistant \u00e0 la rouille.<\/p>\n<p>L'autre raison est que l'acier inoxydable forme un film pendant la corrosion lorsqu'il est mis dans des solutions aqueuses (\u00e9lectrolytes) - c'est pourquoi nous devons faire un d\u00e9capage et une passivation pour <a href=\"https:\/\/www.kaysuns.com\/fr\" target=\"_blank\">tuyaux et raccords en acier inoxydable<\/a>. Par cons\u00e9quent, lorsque le film est endommag\u00e9, il formera imm\u00e9diatement un nouveau film de passivation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e7a4bcc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e7a4bcc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-98998d2\" data-id=\"98998d2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-56756be elementor-widget elementor-widget-heading\" data-id=\"56756be\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pourquoi le film peut-il rouiller ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f246594 elementor-widget elementor-widget-text-editor\" data-id=\"f246594\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Il y a trois raisons pour la r\u00e9sistance \u00e0 la corrosion sur l&#039;acier inoxydable : a) Le film est extr\u00eamement mince, et il n&#039;est que de quelques microns m\u00eame la teneur en chrome d\u00e9passe 10.5% ; b) La densit\u00e9 sp\u00e9cifique du film de passivation est sup\u00e9rieure \u00e0 celle des matrices.<\/p>\n<p>Ainsi, il est difficile pour les milieux corrosifs de rompre le film de passivation et de corroder davantage le substrat ; c) La teneur en chrome est trois fois plus \u00e9lev\u00e9e dans le film de passivation que dans le substrat, ce qui le rend tr\u00e8s r\u00e9sistant \u00e0 la corrosion.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-10beabc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"10beabc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1dcfb9f\" data-id=\"1dcfb9f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5d611ae elementor-widget elementor-widget-heading\" data-id=\"5d611ae\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">L&#039;acier inoxydable peut \u00eatre corrod\u00e9<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b9fa8b elementor-widget elementor-widget-text-editor\" data-id=\"4b9fa8b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Dans certaines circonstances, l&#039;acier inoxydable sera corrod\u00e9.<br \/>En raison de la complexit\u00e9 de son environnement d'application, le simple film de passivation \u00e0 l'oxyde de chrome ne peut pas r\u00e9pondre aux besoins d'un environnement hautement r\u00e9sistant \u00e0 la corrosion. Par cons\u00e9quent, en fonction de ses diff\u00e9rentes applications, il n\u00e9cessite des \u00e9l\u00e9ments suppl\u00e9mentaires tels que <a href=\"https:\/\/www.kaysuns.com\/fr\/role-du-molybdene-dans-les-tubes-et-raccords-en-acier-inoxydable\/\" target=\"_blank\" rel=\"noopener\">molybd\u00e8ne<\/a> (Mo), du cuivre (Cu), de l'azote (N) et d'autres \u00e9l\u00e9ments dans l'acier afin d'am\u00e9liorer la structure du film de passivation, ce qui am\u00e9liore sa r\u00e9sistance \u00e0 la corrosion.<\/p>\n<p>Si du Mo est ajout\u00e9, il favorisera la passivation collective et emp\u00eachera la corrosion.<br \/>Si Cu est ajout\u00e9, la formation de Cucl n&#039;interagira pas avec le milieu corrosif, de sorte que l&#039;am\u00e9lioration de sa r\u00e9sistance \u00e0 la corrosion peut \u00eatre obtenue.<br \/>Si N est ajout\u00e9, l&#039;enrichissement de Cr2N dans le film de passivation et l&#039;augmentation de la concentration de Cr dans le film de passivation intensifieront \u00e9galement la r\u00e9sistance \u00e0 la corrosion de l&#039;acier.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e4d77dc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e4d77dc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e9163a8\" data-id=\"e9163a8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-92077a0 elementor-widget elementor-widget-heading\" data-id=\"92077a0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">La performance de r\u00e9sistance \u00e0 la corrosion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e02340 elementor-widget elementor-widget-text-editor\" data-id=\"7e02340\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pour les performances de r\u00e9sistance \u00e0 la corrosion SS, il existe certaines exigences. Par exemple, l&#039;acier inoxydable 304 peut \u00eatre r\u00e9sistant \u00e0 la corrosion dans un milieu, mais il peut \u00eatre d\u00e9truit dans un autre milieu. Pendant ce temps, la r\u00e9sistance \u00e0 la corrosion de l&#039;acier inoxydable est relative. Jusqu&#039;\u00e0 pr\u00e9sent, aucun acier inoxydable ne peut \u00eatre corrod\u00e9 dans tous les environnements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9fbe814 elementor-widget elementor-widget-text-editor\" data-id=\"9fbe814\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile has-black-color has-text-color has-background\" style=\"background-color: #d8edfa;\">\n<div class=\"wp-block-media-text__content\">\n<p>Comme le montre l&#039;image de droite, en raison de la poussi\u00e8re de fum\u00e9e tombant sur la surface du tuyau en acier inoxydable, apr\u00e8s une p\u00e9riode de temps \u00e0 l&#039;air libre et l&#039;\u00e9rosion par la pluie, nous pouvons voir que des taches de rouille sont apparues dans l&#039;acier inoxydable surface du tuyau. La r\u00e9partition des taches de rouille est la localisation des poussi\u00e8res.<\/p>\n<p>Par cons\u00e9quent, lorsque des substances corrosives adh\u00e8rent \u00e0 la surface de l'acier inoxydable - telles que la limaille de fer, la suie et autres taches similaires - nous devons les nettoyer \u00e0 temps.<\/p>\n<\/div>\n<figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"535\" height=\"374\" class=\"wp-image-7615 size-full\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/05\/can-stainless-steel-304-rust_Kaysuns.jpg\" alt=\"tuyau en acier inoxydable rouill\u00e9\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/05\/can-stainless-steel-304-rust_Kaysuns.jpg 535w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/05\/can-stainless-steel-304-rust_Kaysuns-300x210.jpg 300w\" sizes=\"(max-width: 535px) 100vw, 535px\" \/><\/figure>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c233d40 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c233d40\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cba52f2\" data-id=\"cba52f2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-844623f elementor-widget elementor-widget-heading\" data-id=\"844623f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Sensibilisation de l&#039;acier inoxydable<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-402a17a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"402a17a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4e62388\" data-id=\"4e62388\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-63f6696 elementor-widget elementor-widget-text-editor\" data-id=\"63f6696\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<!-- \/wp:paragraph --><!-- wp:heading --><!-- \/wp:heading --><!-- wp:paragraph -->\n<p>Pour l&#039;acier inoxydable contenant du Cr, sa surface formera un film d&#039;oxyde de chrome et perdra l&#039;activit\u00e9 chimique, qui est appel\u00e9e \u00e9tat de passivation. Cependant, si le syst\u00e8me aust\u00e9nitique est sous la temp\u00e9rature d\u00e9passant 475 \u00e0 850 , l&#039;\u00e9l\u00e9ment C se combinera avec l&#039;\u00e9l\u00e9ment Cr, g\u00e9n\u00e9rant une pr\u00e9cipitation de carbure de chrome (Cr23C6) dans le joint cristallin, de sorte que la teneur en Cr pr\u00e8s du joint de grain sera consid\u00e9rablement r\u00e9duite .<br \/>\u00c0 ce moment-l\u00e0, la r\u00e9sistance \u00e0 la corrosion de l'acier sera r\u00e9duite, et il sera tr\u00e8s sensible \u00e0 l'effet de serre. <a href=\"https:\/\/www.kaysuns.com\/fr\/quels-sont-les-environnements-corrosifs-pour-les-tuyauteries\/\" target=\"_blank\">environnement corrosif<\/a>. Ce ph\u00e9nom\u00e8ne est appel\u00e9 <a href=\"https:\/\/www.kaysuns.com\/fr\/quest-ce-que-la-sensibilisation-de-lacier-inoxydable-et-comment-leviter\/\" target=\"_blank\">sensibilisation de l'acier inoxydable<\/a>. La sensibilisation est la plus vuln\u00e9rable dans les environnements acides oxyd\u00e9s ainsi que dans les zones affect\u00e9es par la chaleur du soudage et dans les zones de traitement par pliage inter-thermique. Les m\u00e9thodes de pr\u00e9vention de la sensibilisation sont les suivantes :<\/p>\n<!-- \/wp:paragraph --><!-- wp:list {\"ordered\":true} -->\n<ol class=\"wp-block-list\"><!-- wp:list-item -->\n<li>Lorsque la temp\u00e9rature monte ou descend entre 475 et 850 \u2103, passe rapidement pour emp\u00eacher l&#039;\u00e9l\u00e9ment Cr de se combiner avec l&#039;\u00e9l\u00e9ment C, de sorte que le carbure de chrome ne puisse pas \u00eatre pr\u00e9cipit\u00e9.<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>Pour l&#039;acier inoxydable qui se produit d\u00e9j\u00e0 le ph\u00e9nom\u00e8ne de sensibilisation, veuillez prendre un traitement en solution solide \u00e0 haute temp\u00e9rature et chauffer \u00e0 une temp\u00e9rature suffisante pour effectuer la d\u00e9composition du carbure de chrome (environ 1040 ~ 1150 \u2103). Adopter ensuite un refroidissement rapide, de sorte que la pr\u00e9cipitation de carbure de chrome ne puisse pas pr\u00e9cipiter.<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>Ajout d'acier inoxydable \u00e0 faible teneur en carbone <a href=\"\/fr\/quest-ce-que-lacier-304l\/\" target=\"_blank\">304L<\/a>304LN, 316LN, 316LN, 316J1L, 317L, 317LN, de sorte que l'\u00e9l\u00e9ment Cr ne peut \u00eatre combin\u00e9 avec l'\u00e9l\u00e9ment C. En g\u00e9n\u00e9ral, lorsque la teneur en C est inf\u00e9rieure \u00e0 0,05%, il n'y a pas de corrosion des joints de grain lors du soudage. Toutefois, il convient d'accorder une attention particuli\u00e8re au nettoyage et d'essayer d'\u00e9viter la pollution par l'huile et d'autres substances contenant de l'\u00e9l\u00e9ment C. En cas d'utilisation dans de l'acide nitrique chaud concentr\u00e9 ou de l'acide mixte contenant de l'acide hydroxyl\u00e9, la teneur en \u00e9l\u00e9ment C doit \u00eatre inf\u00e9rieure \u00e0 0,03%.<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>Utiliser de l'acier inoxydable stabilis\u00e9 contenant du titane (Ti) ou du niobium (Nb), tel que <a href=\"\/fr\/quest-ce-que-lacier-inoxydable-316ti\/\" target=\"_blank\">316Ti<\/a>, 321, 347, 348. L'affinit\u00e9 du Ti, du Nb et du C est plus grande que celle du Cr, et la temp\u00e9rature de pr\u00e9cipitation du carbure de titane et du carbure de niobium est plus \u00e9lev\u00e9e que celle du carbure de chrome, de sorte que la pr\u00e9cipitation du carbure de chrome peut \u00eatre \u00e9vit\u00e9e.<\/li>\n<!-- \/wp:list-item --><\/ol>\n<!-- \/wp:list --><!-- wp:paragraph -->\n<p>En somme, l&#039;acier inoxydable peut \u00eatre rouill\u00e9. Mais dans le m\u00eame environnement, son taux de corrosion est bien inf\u00e9rieur \u00e0 celui des autres aciers, il peut m\u00eame parfois \u00eatre ignor\u00e9.<\/p>\n<!-- \/wp:paragraph --><!-- wp:paragraph --><!-- \/wp:paragraph --><!-- wp:paragraph --><!-- \/wp:paragraph --><!-- wp:social-links -->\n<ul class=\"wp-block-social-links\"><!-- wp:social-link {\"service\":\"linkedin\"} \/--><!-- wp:social-link {\"service\":\"twitter\"} \/--><!-- wp:social-link {\"service\":\"facebook\"} \/--><\/ul>\n<!-- \/wp:social-links -->\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7d83d4d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7d83d4d\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-15db57d\" data-id=\"15db57d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dd6291a elementor-widget elementor-widget-text-editor\" data-id=\"dd6291a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vous voudrez peut-\u00eatre aussi lire :<br \/><a href=\"https:\/\/www.kaysuns.com\/fr\/lacier-inoxydable-ternit-il\/\" target=\"_blank\">L'acier inoxydable ternit-il ?<\/a><br \/><a href=\"https:\/\/www.kaysuns.com\/fr\/est-en-acier-inoxydable-magnetique\/\" target=\"_blank\">L'acier inoxydable est-il magn\u00e9tique ?<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section 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elementor-widget-divider--view-line_text elementor-widget-divider--element-align-left elementor-widget elementor-widget-divider\" data-id=\"fdbc4de\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<span class=\"elementor-divider__text elementor-divider__element\">\n\t\t\t\tPrendre contact\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-759cff7 elementor-align-start elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"759cff7\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul 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