{"id":2557,"date":"2023-03-29T09:16:14","date_gmt":"2023-03-29T01:16:14","guid":{"rendered":"https:\/\/ots.seowaimao.com\/?p=2557"},"modified":"2023-03-29T09:16:14","modified_gmt":"2023-03-29T01:16:14","slug":"explication-du-test-au-brouillard-salin","status":"publish","type":"post","link":"https:\/\/ots-testequipment.net\/fr\/blog\/explanation-of-salt-spray-test\/","title":{"rendered":"Explication du test au brouillard salin"},"content":{"rendered":"<p>L&#039;essai au brouillard salin est un test environnemental qui utilise les conditions environnementales artificielles simul\u00e9es au brouillard salin cr\u00e9\u00e9es par l&#039;\u00e9quipement d&#039;essai au brouillard salin pour \u00e9valuer la r\u00e9sistance \u00e0 la corrosion des produits ou des mat\u00e9riaux m\u00e9talliques.<br \/>\nLes essais de brouillard salin simul\u00e9s en laboratoire peuvent \u00eatre divis\u00e9s en quatre cat\u00e9gories\u00a0:<br \/>\nTest au brouillard salin neutre, test au brouillard salin, test au brouillard salin acc\u00e9l\u00e9r\u00e9 au sel de cuivre, test au brouillard salin altern\u00e9.<br \/>\n(1) L\u2019essai au brouillard salin neutre (essai NSS) est l\u2019une des premi\u00e8res applications dans le domaine des essais de corrosion acc\u00e9l\u00e9r\u00e9s. Il utilise une solution aqueuse 5% de solution de chlorure de sodium et le pH de la solution est ajust\u00e9 \u00e0 une plage neutre (6-7) comme solution de pulv\u00e9risation. La temp\u00e9rature d&#039;essai est prise \u00e0 35\u00b0C, et la vitesse de s\u00e9dimentation du brouillard salin doit \u00eatre comprise entre 1 et 2 ml\/80 cm 2.h.<br \/>\n(2) Le test au brouillard salin neutre (test ASS) a \u00e9t\u00e9 d\u00e9velopp\u00e9 sur la base d&#039;un test au brouillard salin neutre. Il s&#039;agit d&#039;ajouter un peu d&#039;acide ac\u00e9tique glacial \u00e0 la solution de chlorure de sodium 5%, la valeur du pH de la solution est r\u00e9duite \u00e0 environ 3, la solution devient acide et le brouillard salin form\u00e9 passe finalement du brouillard salin neutre \u00e0 l&#039;acide. Son taux de corrosion est environ 3 fois plus rapide que le test NSS.<br \/>\n(3) Le test de pulv\u00e9risation acc\u00e9l\u00e9r\u00e9e d&#039;ac\u00e9tate de sel de cuivre (test CASS) est un test rapide de corrosion au brouillard salin d\u00e9velopp\u00e9 r\u00e9cemment dans des pays \u00e9trangers. La temp\u00e9rature d&#039;essai est de 50\u00b0C, et une petite quantit\u00e9 de sel de cuivre \u2013 chlorure de cuivre est ajout\u00e9e \u00e0 la solution saline pour induire fortement la corrosion. . Son taux de corrosion est environ 8 fois sup\u00e9rieur \u00e0 celui du test NSS.<br \/>\n(4) Le test au brouillard salin altern\u00e9 est un test complet au brouillard salin, qui est en fait un test au brouillard salin neutre plus un test \u00e0 chaleur humide constante. Il est principalement utilis\u00e9 dans les produits de machines \u00e0 cavit\u00e9. Gr\u00e2ce \u00e0 la p\u00e9n\u00e9tration de l&#039;environnement de mar\u00e9e, la corrosion par brouillard salin est g\u00e9n\u00e9r\u00e9e non seulement \u00e0 la surface du produit mais \u00e9galement \u00e0 l&#039;int\u00e9rieur du produit. Il s&#039;agit d&#039;alterner le produit dans des conditions d&#039;eau sal\u00e9e et d&#039;environnement chaud et humide, et enfin de v\u00e9rifier si les propri\u00e9t\u00e9s \u00e9lectriques et m\u00e9caniques de l&#039;ensemble du produit sont modifi\u00e9es.<br \/>\nM\u00e9thode de test au brouillard salin\u00a0:<br \/>\nG\u00e9n\u00e9ralement, la r\u00e9sistance \u00e0 la corrosion du produit pr\u00e9sentant le degr\u00e9 de corrosion le plus l\u00e9ger est d\u00e9termin\u00e9e par inspection visuelle ou par microscopie optique \u00e0 faible puissance avant et apr\u00e8s l&#039;essai. Pendant le test, la temp\u00e9rature, la concentration du brouillard salin, le cycle humidit\u00e9\/brouillard salin et la dur\u00e9e du test sont utilis\u00e9s comme niveau de gravit\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"<p>L&#039;essai au brouillard salin est un test environnemental qui utilise les conditions environnementales artificielles simul\u00e9es au brouillard salin cr\u00e9\u00e9es par l&#039;\u00e9quipement d&#039;essai au brouillard salin pour \u00e9valuer la r\u00e9sistance \u00e0 la corrosion des produits ou des mat\u00e9riaux m\u00e9talliques. Les essais au brouillard salin simul\u00e9 en laboratoire peuvent \u00eatre divis\u00e9s en quatre cat\u00e9gories\u00a0: essai au brouillard salin neutre, essai au brouillard salin \u00e0 l&#039;ac\u00e9tate, essai au sel de cuivre acc\u00e9l\u00e9r\u00e9\u2026<\/p>","protected":false},"author":15,"featured_media":2558,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2557","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Explanation of Salt Spray Test - OTS TECHNIK<\/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:\/\/ots-testequipment.net\/fr\/blog\/explication-du-test-au-brouillard-salin\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Explanation of Salt Spray Test - OTS TECHNIK\" \/>\n<meta property=\"og:description\" content=\"The salt spray test is an environmental test that uses the artificial simulated salt spray environmental conditions created by the salt spray test equipment to evaluate the corrosion resistance of products or metal materials. Laboratory simulated salt spray tests can be divided into four categories: Neutral salt spray test, acetate spray test, copper salt accelerated...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ots-testequipment.net\/fr\/blog\/explication-du-test-au-brouillard-salin\/\" \/>\n<meta property=\"og:site_name\" content=\"OTS TECHNIK\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-29T01:16:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2023\/03\/testing-equipment.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"427\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"DC\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"DC\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ots-testequipment.net\\\/blog\\\/explanation-of-salt-spray-test\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ots-testequipment.net\\\/blog\\\/explanation-of-salt-spray-test\\\/\"},\"author\":{\"name\":\"DC\",\"@id\":\"https:\\\/\\\/ots-testequipment.net\\\/#\\\/schema\\\/person\\\/9bd59a2dc2917f21d827f27098d6c6aa\"},\"headline\":\"Explanation of Salt Spray Test\",\"datePublished\":\"2023-03-29T01:16:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ots-testequipment.net\\\/blog\\\/explanation-of-salt-spray-test\\\/\"},\"wordCount\":404,\"image\":{\"@id\":\"https:\\\/\\\/ots-testequipment.net\\\/blog\\\/explanation-of-salt-spray-test\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ots-testequipment.net\\\/wp-content\\\/uploads\\\/2023\\\/03\\\/testing-equipment.webp\",\"articleSection\":[\"BLOG\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ots-testequipment.net\\\/blog\\\/explanation-of-salt-spray-test\\\/\",\"url\":\"https:\\\/\\\/ots-testequipment.net\\\/blog\\\/explanation-of-salt-spray-test\\\/\",\"name\":\"Explanation of Salt Spray Test - 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