{"id":6520,"date":"2020-11-27T07:21:07","date_gmt":"2020-11-27T07:21:07","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=6520"},"modified":"2022-06-30T08:58:26","modified_gmt":"2022-06-30T08:58:26","slug":"corrosao-atmosferica-de-tubos-de-aco-inoxidavel-duplex","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/corrosao-atmosferica-de-tubos-de-aco-inoxidavel-duplex\/","title":{"rendered":"Corros\u00e3o atmosf\u00e9rica de tubos duplex de a\u00e7o inoxid\u00e1vel"},"content":{"rendered":"<p>Ao contr\u00e1rio da corros\u00e3o de tubos de a\u00e7o duplex imersos em uma solu\u00e7\u00e3o l\u00edquida, a corros\u00e3o atmosf\u00e9rica refere-se \u00e0 corros\u00e3o de <a href=\"https:\/\/www.kaysuns.com\/pt\/duplex-2205-stainless-steel-pipe\/\" target=\"_blank\">tubos de a\u00e7o inoxid\u00e1vel duplex<\/a> expostos ao ar.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"558\" height=\"434\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/11\/Atmospheric-Corrosion.jpg\" alt=\"Corros\u00e3o Atmosf\u00e9rica\" class=\"wp-image-6521\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/11\/Atmospheric-Corrosion.jpg 558w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/11\/Atmospheric-Corrosion-300x233.jpg 300w\" sizes=\"(max-width: 558px) 100vw, 558px\" \/><\/figure><\/div>\n\n\n\n<p>A corros\u00e3o atmosf\u00e9rica resume uma ampla gama de condi\u00e7\u00f5es, portanto, a classifica\u00e7\u00e3o da corros\u00e3o atmosf\u00e9rica \u00e9 diversa. Algumas s\u00e3o classificadas de acordo com a geografia e o ar contendo elementos vestigiais (industrial, marinho e rural); algumas s\u00e3o classificadas por clima (tropical, tropical \u00famido, temperado, etc.); e algumas s\u00e3o classificadas de acordo com o estado de fixa\u00e7\u00e3o do vapor de \u00e1gua na superf\u00edcie do metal.<\/p>\n\n\n\n<p>Da perspectiva das condi\u00e7\u00f5es de corros\u00e3o, os principais componentes da atmosfera s\u00e3o \u00e1gua e oxig\u00eanio, e o vapor de \u00e1gua na atmosfera \u00e9 o principal fator que determina a taxa de corros\u00e3o e a hist\u00f3ria do tubo de a\u00e7o inoxid\u00e1vel duplex atmosf\u00e9rico. Portanto, a corros\u00e3o atmosf\u00e9rica pode ser dividida em tr\u00eas tipos: \"seca\", \"\u00famida\" e \"\u00famida\" de acordo com o grau de umidade da superf\u00edcie met\u00e1lica corro\u00edda.<\/p>\n\n\n\n<p>A corros\u00e3o atmosf\u00e9rica seca tamb\u00e9m \u00e9 chamada de oxida\u00e7\u00e3o seca e corros\u00e3o com baixa umidade, ou seja, corros\u00e3o atmosf\u00e9rica quando basicamente n\u00e3o h\u00e1 pel\u00edcula de \u00e1gua na superf\u00edcie do tubo de a\u00e7o duplex. Este tipo de corros\u00e3o pertence \u00e0 oxida\u00e7\u00e3o \u00e0 temperatura ambiente na corros\u00e3o qu\u00edmica. Em uma atmosfera de temperatura ambiente limpa e seca, a maioria dos metais formam uma pel\u00edcula de \u00f3xido invis\u00edvel extremamente fina com uma espessura de 10-40A.<\/p>\n\n\n\n<p>Quando a umidade relativa do ar est\u00e1 abaixo de 100%, a corros\u00e3o do metal ocorre sob uma fina pel\u00edcula de \u00e1gua que \u00e9 invis\u00edvel a olho nu. Como a oxida\u00e7\u00e3o do ferro quando n\u00e3o \u00e9 exposto \u00e0 chuva ou \u00e0 neve. Esta camada de pel\u00edcula de \u00e1gua \u00e9 formada na superf\u00edcie do metal devido \u00e0 a\u00e7\u00e3o do tubo de a\u00e7o bif\u00e1sico, adsor\u00e7\u00e3o ou agrega\u00e7\u00e3o qu\u00edmica. Portanto, a concentra\u00e7\u00e3o deste vapor de \u00e1gua corrosivo deve exceder um certo valor m\u00ednimo (umidade cr\u00edtica). Al\u00e9m disso, tamb\u00e9m requer a presen\u00e7a de uma pequena quantidade de contamina\u00e7\u00e3o de g\u00e1s ou de contamina\u00e7\u00e3o s\u00f3lida. Quando a umidade cr\u00edtica \u00e9 excedida, a presen\u00e7a de contamina\u00e7\u00e3o aumenta muito a taxa de corros\u00e3o da superf\u00edcie do tubo de a\u00e7o duplex.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>Postado por <a href=\"https:\/\/www.kaysuns.com\/pt\/\" target=\"_blank\">tubos e acess\u00f3rios de a\u00e7o inoxid\u00e1vel<\/a> fornecedor, KAYSUNS.<\/p>","protected":false},"featured_media":6521,"template":"","categories":[2],"tags":[],"class_list":["post-6520","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-pipe"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Atmospheric Corrosion Of Duplex Stainless Steel Pipe - KAYSUNS<\/title>\n<meta name=\"description\" content=\"Duplex stainless steel pipes exposed to the air will sause atmospheric corrosion which is more is different from liquid solution corrosion.\" \/>\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\/pt\/blog\/corrosao-atmosferica-de-tubos-de-aco-inoxidavel-duplex\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Atmospheric Corrosion Of Duplex Stainless Steel Pipe - 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