{"id":5874,"date":"2020-05-08T06:20:49","date_gmt":"2020-05-08T06:20:49","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5874"},"modified":"2026-03-25T03:44:14","modified_gmt":"2026-03-25T03:44:14","slug":"la-necessite-du-decapage-et-de-la-passivation-des-tuyaux-en-acier-inoxydable","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/la-necessite-du-decapage-et-de-la-passivation-des-tuyaux-en-acier-inoxydable\/","title":{"rendered":"La n\u00e9cessit\u00e9 du d\u00e9capage et de la passivation des tuyaux en acier inoxydable"},"content":{"rendered":"<h2 class=\"wp-block-heading\">La r\u00e9sistance \u00e0 la corrosion des tuyaux en acier inoxydable d\u00e9pend principalement de la couche de passivation de surface<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"522\" height=\"390\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg\" alt=\"D\u00e9capage et passivation de tuyaux en acier inoxydable\" class=\"wp-image-5875\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg 522w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes-300x225.jpg 300w\" sizes=\"(max-width: 522px) 100vw, 522px\" \/><\/figure>\n<\/div>\n\n\n<p>Tuyau en acier inoxydable, comme <a href=\"https:\/\/www.kaysuns.com\/fr\/\" target=\"_blank\">tuyaux et raccords duplex<\/a> a une bonne r\u00e9sistance \u00e0 la corrosion, une r\u00e9sistance \u00e0 l&#039;oxydation \u00e0 haute temp\u00e9rature, de bonnes performances \u00e0 basse temp\u00e9rature et d&#039;excellentes performances m\u00e9caniques et de traitement. Par cons\u00e9quent, il est largement utilis\u00e9 dans les secteurs de la chimie, du p\u00e9trole, de l&#039;\u00e9nergie, de l&#039;ing\u00e9nierie nucl\u00e9aire, de l&#039;a\u00e9rospatiale, de la marine, de la pharmacie, de l&#039;industrie l\u00e9g\u00e8re, du textile et autres. <\/p>\n\n\n\n<p>La r\u00e9sistance \u00e0 la corrosion de l&#039;acier inoxydable d\u00e9pend principalement de la couche de passivation de surface. S&#039;il est incomplet ou d\u00e9fectueux, le tuyau en acier inoxydable sera toujours corrod\u00e9.<\/p>\n\n\n\n<p><strong>Principe de <a href=\"https:\/\/www.kaysuns.com\/fr\/duplex-2205-stainless-steel-pipe\/\" target=\"_blank\">tuyau duplex<\/a>, <a href=\"https:\/\/www.kaysuns.com\/fr\/tuyau-en-acier-inoxydable-sans-soudure\/\" target=\"_blank\">tuyau en acier inoxydable sans soudure<\/a> d\u00e9capage et passivation :<\/strong><\/p>\n\n\n\n<p>La r\u00e9sistance \u00e0 la corrosion de l&#039;acier inoxydable est principalement due au fait que la surface est recouverte d&#039;une couche de passivation dense tr\u00e8s mince (environ 1 nm), qui constitue la barri\u00e8re de base pour la protection de l&#039;acier inoxydable.<\/p>\n\n\n\n<p>La passivation de l&#039;acier inoxydable a des caract\u00e9ristiques dynamiques. Il ne faut pas consid\u00e9rer que la corrosion s&#039;est compl\u00e8tement arr\u00eat\u00e9e, mais qu&#039;elle forme une barri\u00e8re de diffusion, ce qui r\u00e9duit fortement la vitesse de r\u00e9action de l&#039;anode. En pr\u00e9sence d&#039;\u00e9l\u00e9ments r\u00e9ducteurs (comme les ions chlorure) ont tendance \u00e0 d\u00e9truire la couche, et en pr\u00e9sence de substances oxydantes (comme l&#039;air) peuvent maintenir ou r\u00e9parer la couche.<\/p>\n\n\n\n<p>Les <a href=\"https:\/\/www.kaysuns.com\/fr\/tuyaux-en-acier-inoxydable\/\" target=\"_blank\">tuyau en acier inoxydable<\/a> la pi\u00e8ce formera une couche d&#039;oxyde lorsqu&#039;elle est plac\u00e9e dans l&#039;air, mais ce film n&#039;est pas aussi protecteur que la couche de passivation.<\/p>\n\n\n\n<p>G\u00e9n\u00e9ralement, un nettoyage en profondeur est requis, y compris un nettoyage alcalin et un nettoyage acide, puis une passivation avec un agent oxydant peut assurer l&#039;int\u00e9grit\u00e9 et la stabilit\u00e9 de la couche de passivation.<\/p>\n\n\n\n<p>L&#039;un des objectifs du d\u00e9capage est de cr\u00e9er des conditions favorables au traitement de passivation et d&#039;assurer la formation d&#039;une couche de passivation de haute qualit\u00e9. Par d\u00e9capage, la surface du tuyau en acier inoxydable est \u00e9rod\u00e9e avec une \u00e9paisseur moyenne de 10 m, ce qui peut faire en sorte que toute la surface ait tendance \u00e0 \u00eatre uniform\u00e9ment \u00e9quilibr\u00e9e, et certains dangers cach\u00e9s qui sont faciles \u00e0 provoquer la corrosion sont \u00e9limin\u00e9s.<\/p>\n\n\n\n<p>Plus important encore, gr\u00e2ce \u00e0 l'acide <a href=\"https:\/\/www.kaysuns.com\/fr\/blog\/decapage-et-passivation-de-tubes-et-tuyaux-en-acier-inoxydable\/\" target=\"_blank\">d\u00e9capage et passivation<\/a>, La dissolution du fer et des oxydes de fer est pr\u00e9f\u00e9r\u00e9e \u00e0 celle du chrome et des oxydes de chrome, et la couche appauvrie en chrome est \u00e9limin\u00e9e, ce qui entra\u00eene un enrichissement du chrome \u00e0 la surface de l'acier inoxydable. Le potentiel peut atteindre + 1,0 V (SCE), ce qui est proche du potentiel des m\u00e9taux pr\u00e9cieux et am\u00e9liore la stabilit\u00e9 de la r\u00e9sistance \u00e0 la corrosion.<\/p>\n\n\n\n<p>Diff\u00e9rents traitements de passivation formeront une r\u00e9sistance \u00e0 la corrosion diff\u00e9rente. Gr\u00e2ce \u00e0 un traitement \u00e9lectrochimique, la couche de passivation peut avoir une structure multicouche, formant une couche de CrO3, Cr2O3 ou d&#039;oxyde vitreux sur la couche de surface, de sorte que le tube en acier inoxydable puisse exercer une r\u00e9sistance maximale \u00e0 la corrosion.<\/p>","protected":false},"featured_media":5875,"template":"","categories":[186],"tags":[],"class_list":["post-5874","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>The Necessity Of Pickling And Passivation Of Stainless Steel Pipes - Stainless Steel Pipe and Fittings | KAYSUNS<\/title>\n<meta name=\"description\" content=\"The corrosion resistance of stainless steel mainly depends on the surface passivation layer. If it is incomplete or defective, it will still be corroded.\" \/>\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.kaysuns.com\/fr\/blog\/la-necessite-du-decapage-et-de-la-passivation-des-tuyaux-en-acier-inoxydable\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Necessity Of Pickling And Passivation Of Stainless Steel Pipes - Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"The corrosion resistance of stainless steel mainly depends on the surface passivation layer. If it is incomplete or defective, it will still be corroded.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kaysuns.com\/fr\/blog\/la-necessite-du-decapage-et-de-la-passivation-des-tuyaux-en-acier-inoxydable\/\" \/>\n<meta property=\"og:site_name\" content=\"Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-25T03:44:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"522\" \/>\n\t<meta property=\"og:image:height\" content=\"390\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/\",\"url\":\"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/\",\"name\":\"The Necessity Of Pickling And Passivation Of Stainless Steel Pipes - Stainless Steel Pipe and Fittings | KAYSUNS\",\"isPartOf\":{\"@id\":\"https:\/\/www.kaysuns.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg\",\"datePublished\":\"2020-05-08T06:20:49+00:00\",\"dateModified\":\"2026-03-25T03:44:14+00:00\",\"description\":\"The corrosion resistance of stainless steel mainly depends on the surface passivation layer. If it is incomplete or defective, it will still be corroded.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#primaryimage\",\"url\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg\",\"contentUrl\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg\",\"width\":522,\"height\":390,\"caption\":\"Pickling And Passivation Of Stainless Steel Pipes\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.kaysuns.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"The Necessity Of Pickling And Passivation Of Stainless Steel Pipes\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.kaysuns.com\/#website\",\"url\":\"https:\/\/www.kaysuns.com\/\",\"name\":\"Stainless Steel Pipe and Fittings | KAYSUNS\",\"description\":\"Stainless Steel Pipe &amp; Fittings Manufacturer and Supplier in China\",\"publisher\":{\"@id\":\"https:\/\/www.kaysuns.com\/#organization\"},\"alternateName\":\"KAYSUNS\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.kaysuns.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.kaysuns.com\/#organization\",\"name\":\"Kaysuns Industry Ltd.\",\"url\":\"https:\/\/www.kaysuns.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png\",\"contentUrl\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png\",\"width\":52,\"height\":59,\"caption\":\"Kaysuns Industry Ltd.\"},\"image\":{\"@id\":\"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"N\u00e9cessit\u00e9 du d\u00e9capage et de la passivation des tuyaux en acier inoxydable - Tubes et raccords en acier inoxydable | KAYSUNS","description":"La r\u00e9sistance \u00e0 la corrosion de l&#039;acier inoxydable d\u00e9pend principalement de la couche de passivation de surface. S&#039;il est incomplet ou d\u00e9fectueux, il sera toujours corrod\u00e9.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kaysuns.com\/fr\/blog\/la-necessite-du-decapage-et-de-la-passivation-des-tuyaux-en-acier-inoxydable\/","og_locale":"fr_FR","og_type":"article","og_title":"The Necessity Of Pickling And Passivation Of Stainless Steel Pipes - Stainless Steel Pipe and Fittings | KAYSUNS","og_description":"The corrosion resistance of stainless steel mainly depends on the surface passivation layer. If it is incomplete or defective, it will still be corroded.","og_url":"https:\/\/www.kaysuns.com\/fr\/blog\/la-necessite-du-decapage-et-de-la-passivation-des-tuyaux-en-acier-inoxydable\/","og_site_name":"Stainless Steel Pipe and Fittings | KAYSUNS","article_modified_time":"2026-03-25T03:44:14+00:00","og_image":[{"width":522,"height":390,"url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/","url":"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/","name":"N\u00e9cessit\u00e9 du d\u00e9capage et de la passivation des tuyaux en acier inoxydable - Tubes et raccords en acier inoxydable | KAYSUNS","isPartOf":{"@id":"https:\/\/www.kaysuns.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#primaryimage"},"image":{"@id":"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg","datePublished":"2020-05-08T06:20:49+00:00","dateModified":"2026-03-25T03:44:14+00:00","description":"La r\u00e9sistance \u00e0 la corrosion de l&#039;acier inoxydable d\u00e9pend principalement de la couche de passivation de surface. S&#039;il est incomplet ou d\u00e9fectueux, il sera toujours corrod\u00e9.","breadcrumb":{"@id":"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#primaryimage","url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg","contentUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/05\/Pickling-And-Passivation-Of-Stainless-Steel-Pipes.jpg","width":522,"height":390,"caption":"Pickling And Passivation Of Stainless Steel Pipes"},{"@type":"BreadcrumbList","@id":"https:\/\/www.kaysuns.com\/blog\/the-necessity-of-pickling-and-passivation-of-stainless-steel-pipes\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.kaysuns.com\/"},{"@type":"ListItem","position":2,"name":"The Necessity Of Pickling And Passivation Of Stainless Steel Pipes"}]},{"@type":"WebSite","@id":"https:\/\/www.kaysuns.com\/#website","url":"https:\/\/www.kaysuns.com\/","name":"Tubes et raccords en acier inoxydable | KAYSUNS","description":"Tubes et raccords en acier inoxydable Fabricant et Fournisseur en Chine","publisher":{"@id":"https:\/\/www.kaysuns.com\/#organization"},"alternateName":"KAYSUNS","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.kaysuns.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.kaysuns.com\/#organization","name":"Kaysuns Industry Ltd.","url":"https:\/\/www.kaysuns.com\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png","contentUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png","width":52,"height":59,"caption":"Kaysuns Industry Ltd."},"image":{"@id":"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/blog\/5874","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/types\/blog"}],"version-history":[{"count":2,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/blog\/5874\/revisions"}],"predecessor-version":[{"id":58492,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/blog\/5874\/revisions\/58492"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/media\/5875"}],"wp:attachment":[{"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/media?parent=5874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/categories?post=5874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/tags?post=5874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}