{"id":2849,"date":"2020-07-14T06:14:18","date_gmt":"2020-07-14T06:14:18","guid":{"rendered":"https:\/\/3.212.105.250\/?p=2849"},"modified":"2025-07-26T15:09:34","modified_gmt":"2025-07-26T21:09:34","slug":"les-deux-types-de-systemes-de-protection-cathodique","status":"publish","type":"post","link":"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2020\/07\/14\/les-deux-types-de-systemes-de-protection-cathodique\/","title":{"rendered":"Les deux types de syst\u00e8mes de protection cathodique"},"content":{"rendered":"<p>La protection cathodique est un syst\u00e8me sp\u00e9cialis\u00e9 con\u00e7u pour tenir la corrosion \u00e0 distance. Il s'agit d'un processus qui emp\u00eache la corrosion de se former sur les surfaces m\u00e9talliques, m\u00eame dans des environnements tr\u00e8s corrosifs. C'est la forme la plus efficace de protection contre la corrosion dans de nombreuses industries. Consultez cette analyse des deux types de syst\u00e8mes de protection cathodique pour d\u00e9couvrir les diff\u00e9rences et les similitudes entre chacun d'entre eux.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu'est-ce qu'un syst\u00e8me de protection cathodique ?<\/h2>\n\n\n\n<p>Ces syst\u00e8mes permettent d'arr\u00eater la corrosion en cr\u00e9ant une cellule \u00e9lectrochimique. Ce circuit fonctionne un peu comme une tr\u00e8s grande batterie, o\u00f9 un m\u00e9tal (ou une structure) se corrode tandis qu'un autre m\u00e9tal ne se corrode pas (la cathode ne se corrode pas). Le fait que la cathode ne se corrode pas dans ces cellules \u00e9lectriques est la raison pour laquelle on parle de protection cathodique. L'objectif est de fabriquer une structure que vous souhaitez <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2023\/02\/17\/5-types-dequipements-dessai-de-protection-cathodique\/'>prot\u00e9ger la cathode<\/a>. Cela peut se faire de plusieurs mani\u00e8res ; chacune d'entre elles permet de s'assurer qu'une autre structure dont vous ne vous souciez pas est en train de se corroder dans la cellule.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Syst\u00e8mes de protection cathodique sacrificielle<\/h2>\n\n\n\n<p>Ces syst\u00e8mes fonctionnent \u00e0 l'aide d'anodes sacrificielles. La corrosion galvanique est le r\u00e9sultat d'un processus \u00e9lectrique et chimique qui relie \u00e9lectriquement plusieurs m\u00e9taux. L'utilisation d'anodes sacrificielles prot\u00e8ge les structures m\u00e9talliques de la corrosion galvanique. Le syst\u00e8me <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2021\/03\/19\/fonctionnement-des-anodes-sacrificielles\/\">l'anode sacrificielle est une anode m\u00e9tallique<\/a> qui est intentionnellement reli\u00e9e \u00e9lectriquement \u00e0 la structure parce qu'elle est plus r\u00e9active \u00e0 l'environnement corrosif que le m\u00e9tal lui-m\u00eame. Cela permet de prot\u00e9ger la structure m\u00e9tallique en permettant \u00e0 l'anode sacrificielle de se corroder plut\u00f4t que la structure. Ces anodes sacrificielles doivent \u00eatre remplac\u00e9es lorsqu'elles sont corrod\u00e9es, mais ce processus est durable et permet de prot\u00e9ger les structures contre la corrosion.  Les mat\u00e9riaux typiques des anodes sont l'aluminium, le zinc et le magn\u00e9sium.<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n<div class=\"text-content-inner\">\n<p class=\"has-text-align-center\"><strong>Navire avec anodes galvaniques<\/strong><\/p>\n\n<p><\/p>\n<\/div>\n\n\n<p>La dur\u00e9e de vie d'un syst\u00e8me galvanique d\u00e9pend des exigences de conception, du nombre et du poids des anodes utilis\u00e9es et des besoins du client. Ces syst\u00e8mes peuvent fonctionner r\u00e9guli\u00e8rement jusqu'\u00e0 20 ans, en fonction des types de sols locaux. Les syst\u00e8mes galvaniques sont g\u00e9n\u00e9ralement adapt\u00e9s aux sols \u00e0 faible r\u00e9sistivit\u00e9 et aux applications immerg\u00e9es.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Syst\u00e8mes de protection cathodique \u00e0 courant impos\u00e9<\/h2>\n\n\n\n<p>Le second type de syst\u00e8me, appel\u00e9 syst\u00e8me \u00e0 courant impos\u00e9, est g\u00e9n\u00e9ralement utilis\u00e9 lorsque les syst\u00e8mes galvaniques ne suffisent pas \u00e0 pr\u00e9venir la corrosion. Les syst\u00e8mes \u00e0 courant impos\u00e9 prot\u00e8gent les structures m\u00e9talliques m\u00eame dans les environnements corrosifs les plus extr\u00eames. Dans un syst\u00e8me \u00e0 courant impos\u00e9, il y a une source active de courant continu, qui permet d'acheminer davantage de courant vers la structure m\u00e9tallique. D'une certaine mani\u00e8re, cela fournit un flux constant de protection contre la corrosion. C'est l'un des syst\u00e8mes les plus <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2020\/04\/02\/des-methodes-efficaces-de-lutte-contre-la-corrosion\/\">des m\u00e9thodes efficaces de pr\u00e9vention de la corrosion<\/a> et est d'une long\u00e9vit\u00e9 exceptionnelle.<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n<div class=\"text-content-inner\">\n<p class=\"has-text-align-center\"><strong>Anode en m\u00e9tal mixte (courant impos\u00e9)<\/strong><\/p>\n\n<p><\/p>\n<\/div>\n\n\n<p>Les syst\u00e8mes \u00e0 courant impos\u00e9 utilisent un redresseur qui force le courant \u00e0 sortir d'une anode enterr\u00e9e ou submerg\u00e9e. Les tensions d'entra\u00eenement de ces syst\u00e8mes sont r\u00e9glables, en fonction des sols locaux et de la dur\u00e9e de vie restante de l'anode. Le courant de sortie requis peut varier consid\u00e9rablement en fonction de l'installation, certaines installations, telles que les piliers de digue non rev\u00eatus, n\u00e9cessitant des centaines d'amp\u00e8res. Les syst\u00e8mes \u00e0 impression conviennent mieux aux sols \u00e0 forte r\u00e9sistivit\u00e9 et aux syst\u00e8mes n\u00e9cessitant un courant \u00e9lev\u00e9.<\/p>\n\n\n\n<p>Les anodes \u00e0 courant impos\u00e9 typiques comprennent l'oxyde m\u00e9tallique mixte (MMO), la fonte, l'acier, le graphite ou la ferraille existante. La dur\u00e9e de vie de ces syst\u00e8mes peut atteindre 40 \u00e0 50 ans, avec une dur\u00e9e de vie typique de 25 \u00e0 30 ans. Une fois la fin de vie atteinte, une nouvelle anode doit \u00eatre install\u00e9e et le syst\u00e8me peut \u00eatre remis en service.<\/p>\n\n\n\n<p>L'application excessive de courant \u00e0 partir de ces syst\u00e8mes peut entra\u00eener des probl\u00e8mes au niveau de votre structure. Ces probl\u00e8mes peuvent inclure la fragilisation par l'hydrog\u00e8ne et le d\u00e9collement du rev\u00eatement. Veillez \u00e0 ce que le syst\u00e8me soit r\u00e9guli\u00e8rement v\u00e9rifi\u00e9 par un sp\u00e9cialiste agr\u00e9\u00e9 de l'\u00e9lectricit\u00e9. <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2023\/03\/10\/ingenieurs-en-protection-cathodique\/\">ing\u00e9nieur pour s'assurer que votre structure est correctement prot\u00e9g\u00e9e<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">De quel syst\u00e8me avez-vous besoin ?<\/h2>\n\n\n\n<p>Le syst\u00e8me recommand\u00e9 par un ing\u00e9nieur professionnel d\u00e9pend fortement des exigences et des sp\u00e9cifications du projet. Si vous ne savez pas quoi utiliser ou par o\u00f9 commencer, la premi\u00e8re \u00e9tape consiste \u00e0 trouver un ing\u00e9nieur agr\u00e9\u00e9 qui vous aidera \u00e0 choisir entre les diff\u00e9rents syst\u00e8mes de protection cathodique. Chaque syst\u00e8me a son sc\u00e9nario d'utilisation optimale, et plus t\u00f4t vous obtiendrez l'avis d'un ing\u00e9nieur agr\u00e9\u00e9, plus vous serez en mesure de choisir un syst\u00e8me de protection cathodique. <a href=\"https:\/\/ampp.org\/education\/education-resources\/courses-by-program\/cathodic-protection\/cp-specialist\">sp\u00e9cialiste de la protection cathodique<\/a> L'ing\u00e9nieur doit examiner tous les plans de mise \u00e0 la terre, la r\u00e9sistivit\u00e9 du sol et la tuyauterie. L'ing\u00e9nieur doit examiner tous les plans de mise \u00e0 la terre, la r\u00e9sistivit\u00e9 du sol et le r\u00e9seau de canalisations. <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/domaines-de-consultation\/lenergie-electrique\/services-de-conception\/\">les plans d'isolation \u00e9lectrique afin de dimensionner et de concevoir<\/a> votre syst\u00e8me correctement. Les deux syst\u00e8mes fonctionnent de mani\u00e8re plus efficace sur les structures rev\u00eatues, lorsqu'un rev\u00eatement peut \u00eatre utilis\u00e9.<\/p>\n\n\n\n<p>Contactez Dreiym Engineering pour tous vos besoins en mati\u00e8re de protection cathodique. Nos ing\u00e9nieurs professionnels peuvent r\u00e9aliser un <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/services\/corrosion\/etudes-de-potentiel-de-protection-cathodique\/\" rel=\"noopener noreferrer\">enqu\u00eate cp <\/a>pour vous aider \u00e0 d\u00e9terminer le meilleur plan d'action pour pr\u00e9venir la corrosion de votre structure m\u00e9tallique. Nous employons une \u00e9quipe d'ing\u00e9nieurs agr\u00e9\u00e9s qui travailleront avec vous pour \u00e9laborer un plan qui prot\u00e8ge au mieux vos structures des effets n\u00e9fastes de la corrosion.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Cathodic protection is a specialty system designed to keep corrosion at bay. It is a process that prevents corrosion from forming on metal surfaces, even in very corrosive environments. It is the most effective form of corrosion protection for many industries. Check out this breakdown of the two types of cathodic protection systems to discover [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":3472,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_mbp_gutenberg_autopost":false,"_pgmb_is_evergreen":true,"_pgmb_ap_template_id":0,"iawp_total_views":289,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-2849","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-corrosion-and-cathodic-protection"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.6.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"Cathodic protection is a specialty system designed to keep corrosion at bay. 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