{"id":4337,"date":"2025-12-31T03:20:01","date_gmt":"2025-12-31T03:20:01","guid":{"rendered":"https:\/\/pergolalights.net\/?p=4337"},"modified":"2026-04-03T07:44:23","modified_gmt":"2026-04-03T07:44:23","slug":"salt-spray-test-24-hours-to-years-conversion","status":"publish","type":"post","link":"https:\/\/pergolalights.net\/fr\/salt-spray-test-24-hours-to-years-conversion\/","title":{"rendered":"\u00c0 combien d'ann\u00e9es correspond un test de 24 heures au brouillard salin ?"},"content":{"rendered":"<div class=\"row align-center\"  id=\"row-719868598\">\n\n\t<div id=\"col-1227481806\" class=\"col medium-11 small-12 large-11\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"gap-311374640\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-311374640 {\n  padding-top: 100px;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-2129140805\">\n\n\t<div id=\"col-20973898\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\" style=\"background-color:#bc7d4a;\" >\n\t\t\t\n\t\t\t\n\t<div id=\"text-3829359883\" class=\"text\">\n\t\t\n<h2>\ud83e\udd14 \u00c0 combien d'ann\u00e9es correspond un test de 24 heures au brouillard salin ?<\/h2>\n\t\t\n<style>\n#text-3829359883 {\n  font-size: 0.75rem;\n  color: rgb(255, 255, 255);\n}\n#text-3829359883 > * {\n  color: rgb(255, 255, 255);\n}\n@media (min-width:550px) {\n  #text-3829359883 {\n    font-size: 1.1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-20973898 > .col-inner {\n  padding: 60px 0px 48px 0px;\n  border-radius: 7px;\n}\n<\/style>\n\t<\/div>\n\n\t\n<\/div>\n\t<div id=\"text-790332858\" class=\"text\">\n\t\t\n<h3>\u2705 Les conversions de temps sp\u00e9cifiques sont les suivantes :<\/h3>\n\t\t\n<style>\n#text-790332858 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-790332858 {\n    font-size: 1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-897342336\" class=\"text\">\n\t\t\n<ul>\n<li>Essai au brouillard salin neutre 24h \u21cc Environnement naturel 1 an ;<\/li>\n<li>Test de pulv\u00e9risation saline d'acide ac\u00e9tique 24h \u21cc Environnement naturel 3 ans ;<\/li>\n<li>Test de pulv\u00e9risation saline d'acide ac\u00e9tique acc\u00e9l\u00e9r\u00e9e par le cuivre 24h \u21cc Environnement naturel 8 ans.<\/li>\n<\/ul>\n\t\t\n<style>\n#text-897342336 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-897342336 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-706116193\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-706116193 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-349285114\" class=\"text\">\n\t\t\n<h3>\ud83d\udd0d Analysis\uff1a (Analyse)<\/h3>\n\t\t\n<style>\n#text-349285114 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-349285114 {\n    font-size: 1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1842298151\" class=\"text\">\n\t\t\n<p>La corrosion d\u00e9signe la d\u00e9t\u00e9rioration ou la d\u00e9gradation des mat\u00e9riaux ou de leurs propri\u00e9t\u00e9s sous l'effet de facteurs environnementaux. La majeure partie de la corrosion se produit dans les environnements atmosph\u00e9riques, qui contiennent des composants corrosifs et des facteurs tels que l'oxyg\u00e8ne, l'humidit\u00e9, les fluctuations de temp\u00e9rature et les polluants. La corrosion par brouillard salin repr\u00e9sente l'une des formes les plus r\u00e9pandues et les plus destructrices de la corrosion atmosph\u00e9rique. Le terme \u201cbrouillard salin\u201d fait r\u00e9f\u00e9rence \u00e0 une atmosph\u00e8re riche en chlorures, dont le principal composant corrosif est le chlorure de sodium, un sel marin. Ce chlorure provient principalement des oc\u00e9ans et des r\u00e9gions salines int\u00e9rieures.<\/p>\n\t\t\n<style>\n#text-1842298151 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-1842298151 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-2523730545\" class=\"text\">\n\t\t\n<p>1. Concept de l'essai au brouillard salin<\/p>\n<p>L'essai au brouillard salin est un essai environnemental qui utilise principalement des conditions artificielles de brouillard salin simul\u00e9 cr\u00e9\u00e9es par un \u00e9quipement d'essai au brouillard salin pour \u00e9valuer la r\u00e9sistance \u00e0 la corrosion de produits ou de mat\u00e9riaux m\u00e9talliques.<\/p>\n\t\t\n<style>\n#text-2523730545 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-2523730545 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_242537700\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1214\" height=\"669\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/The-Concept-of-Salt-Spray-Testing.webp\" class=\"attachment-original size-original\" alt=\"The Concept of Salt Spray Testing\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/The-Concept-of-Salt-Spray-Testing.webp 1214w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/The-Concept-of-Salt-Spray-Testing-726x400.webp 726w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/The-Concept-of-Salt-Spray-Testing-768x423.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/The-Concept-of-Salt-Spray-Testing-18x10.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/The-Concept-of-Salt-Spray-Testing-510x281.webp 510w\" sizes=\"auto, (max-width: 1214px) 100vw, 1214px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_242537700 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-882611033\" class=\"text\">\n\t\t\n<p>La majeure partie de la corrosion des mat\u00e9riaux m\u00e9talliques se produit dans les environnements atmosph\u00e9riques, qui contiennent des composants corrosifs et des facteurs tels que l'oxyg\u00e8ne, l'humidit\u00e9, les fluctuations de temp\u00e9rature et les polluants. La corrosion par brouillard salin est l'une des formes les plus courantes et les plus destructrices de la corrosion atmosph\u00e9rique.<\/p>\n\t\t\n<style>\n#text-882611033 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-882611033 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-2848237752\" class=\"text\">\n\t\t\n<p>Salt spray corrodes metal materials primarily through the penetration of conductive salt solutions into the metal, triggering electrochemical reactions. This forms a micro-battery system comprising \u201clow-potential metal\u2014electrolyte solution\u2014high-potential impurities,\u201d facilitating electron transfer. The metal, acting as the anode, dissolves and forms new compounds\u2014the corrosion products. Chloride ions play a primary role in the salt spray corrosion process. They possess strong penetrating ability, easily penetrating metal oxide layers to enter the metal interior and disrupt the metal&#8217;s passivation state. Simultaneously, chloride ions have low hydration energy, readily adsorbing onto metal surfaces and displacing oxygen from the protective oxide layer, thereby causing metal damage.<\/p>\n\t\t\n<style>\n#text-2848237752 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-2848237752 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3106657187\" class=\"text\">\n\t\t\n<ol start=\"2\">\n<li>Classification des essais au brouillard salin<\/li>\n<\/ol>\n<p>Salt spray tests fall into two main categories: natural environmental exposure tests and artificial accelerated simulated salt spray environment tests. Artificial simulated salt spray environment tests utilize a test chamber\u2014a device with a specific volume\u2014to artificially create a salt spray environment within its space. This environment is used to evaluate the quality of a product&#8217;s resistance to salt spray corrosion.<\/p>\n\t\t\n<style>\n#text-3106657187 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3106657187 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1715400757\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1197\" height=\"600\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/Classification_of_Salt_Spray_Tests.webp\" class=\"attachment-original size-original\" alt=\"Classification_of_Salt_Spray_Tests\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/Classification_of_Salt_Spray_Tests.webp 1197w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/Classification_of_Salt_Spray_Tests-798x400.webp 798w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/Classification_of_Salt_Spray_Tests-768x385.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/Classification_of_Salt_Spray_Tests-18x9.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/12\/Classification_of_Salt_Spray_Tests-510x256.webp 510w\" sizes=\"auto, (max-width: 1197px) 100vw, 1197px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1715400757 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1230398651\" class=\"text\">\n\t\t\n<p>Par rapport aux environnements naturels, la concentration de sels de chlorure dans les environnements artificiels de brouillard salin peut \u00eatre plusieurs fois, voire des dizaines de fois, sup\u00e9rieure aux niveaux typiques de brouillard salin naturel, ce qui acc\u00e9l\u00e8re consid\u00e9rablement les taux de corrosion. La r\u00e9alisation d'essais de pulv\u00e9risation saline sur des produits permet donc d'obtenir des r\u00e9sultats beaucoup plus rapidement. Par exemple, alors que l'essai d'un \u00e9chantillon de produit dans des conditions d'exposition naturelles peut prendre un an pour montrer la corrosion, des r\u00e9sultats similaires peuvent \u00eatre obtenus en seulement 24 heures dans des conditions artificielles de brouillard salin simul\u00e9.<\/p>\n<p>Les essais de simulation artificielle de brouillard salin comprennent les essais de brouillard salin neutre, les essais de brouillard salin \u00e0 l'acide ac\u00e9tique, les essais de brouillard salin \u00e0 l'acide ac\u00e9tique acc\u00e9l\u00e9r\u00e9 par le cuivre et les essais de brouillard salin alternatif.<\/p>\n<p>(1) L'essai au brouillard salin neutre (essai NSS) est une m\u00e9thode d'essai de corrosion acc\u00e9l\u00e9r\u00e9e qui a \u00e9t\u00e9 mise au point tr\u00e8s t\u00f4t et dont les applications actuelles sont nombreuses. Il utilise une solution d'eau sal\u00e9e de chlorure de sodium 5% dont le pH est ajust\u00e9 \u00e0 la plage neutre (6-7) comme solution de pulv\u00e9risation. La temp\u00e9rature d'essai est uniform\u00e9ment fix\u00e9e \u00e0 35\u00b0C, ce qui n\u00e9cessite un taux de d\u00e9p\u00f4t de brouillard salin compris entre 1 et 2 ml\/80 cm\u00b2-h.<\/p>\n<p>(2) Le test de pulv\u00e9risation saline \u00e0 l'acide ac\u00e9tique (test ASS) a \u00e9volu\u00e9 \u00e0 partir du test de pulv\u00e9risation saline neutre. Il consiste \u00e0 ajouter de l'acide ac\u00e9tique glacial \u00e0 une solution de chlorure de sodium 5%, ce qui abaisse le pH \u00e0 environ 3 et rend la solution acide. Par cons\u00e9quent, le brouillard salin qui en r\u00e9sulte devient acide plut\u00f4t que neutre. Sa vitesse de corrosion est environ trois fois plus rapide que celle du test NSS.<\/p>\n<p>(3) Le test CASS (Copper-Accelerated Acetic Acid Salt Spray Test) est un test de corrosion acc\u00e9l\u00e9r\u00e9e au brouillard salin r\u00e9cemment mis au point \u00e0 l'\u00e9tranger. R\u00e9alis\u00e9 \u00e0 50\u00b0C, il incorpore une petite quantit\u00e9 de chlorure de cuivre dans la solution saline afin d'intensifier l'induction de la corrosion. Sa vitesse de corrosion est environ huit fois sup\u00e9rieure \u00e0 celle de l'essai NSS.<\/p>\n<p>Conversion des dur\u00e9es sp\u00e9cifiques : 24 heures d'essai au brouillard salin neutre = 1 an en milieu naturel 24 heures d'essai au brouillard salin d'acide ac\u00e9tique = 3 ans en milieu naturel 24 heures d'essai au brouillard salin d'acide ac\u00e9tique acc\u00e9l\u00e9r\u00e9 par le cuivre = 8 ans en milieu naturel<\/p>\n\t\t\n<style>\n#text-1230398651 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-1230398651 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"is-divider divider clearfix\" style=\"max-width:50px;\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":4349,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[84],"tags":[],"class_list":["post-4337","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Learn how 24-hour salt spray tests correlate to real-world years. 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