{"id":2836,"date":"2020-06-08T06:11:22","date_gmt":"2020-06-08T06:11:22","guid":{"rendered":"https:\/\/3.212.105.250\/?p=2836"},"modified":"2025-01-17T20:59:20","modified_gmt":"2025-01-18T02:59:20","slug":"jak-zabranit-galvanicke-korozi","status":"publish","type":"post","link":"https:\/\/vm6fr4whzn6.c.updraftclone.com\/cs\/2020\/06\/08\/jak-zabranit-galvanicke-korozi\/","title":{"rendered":"Jak zabr\u00e1nit galvanick\u00e9 korozi"},"content":{"rendered":"

Galvanick\u00e1 koroze je nejb\u011b\u017en\u011bj\u0161\u00edm typem koroze. Vznik\u00e1 v d\u016fsledku propojen\u00ed dvou kov\u016f s r\u016fznou elektrochemickou energi\u00ed vodivou cestou. U nepodobn\u00fdch kov\u016f s podobnou strukturou doch\u00e1z\u00ed ke galvanick\u00e9 korozi velmi \u010dasto, proto\u017ee maj\u00ed rozd\u00edln\u00e9 energetick\u00e9 hladiny. Galvanick\u00e1 koroze je pro kovy obvykle \u0161kodliv\u00e1 a m\u016f\u017ee rychle v\u00e9st k po\u0161kozen\u00ed a vzniku d\u011br, co\u017e je nebezpe\u010dn\u00e9 zejm\u00e9na v infrastruktu\u0159e a potrub\u00ed. P\u0159e\u010dt\u011bte si v\u00edce o ochran\u011b kov\u016f v tomto pr\u016fvodci, jak p\u0159edch\u00e1zet galvanick\u00e9 korozi.<\/p>\n

Katodick\u00e1 ochrana<\/h2>\n

Katodick\u00e1 ochrana je nej\u00fa\u010dinn\u011bj\u0161\u00ed metodou prevence galvanick\u00e9 koroze. Zabra\u0148uje korozi t\u00edm, \u017ee v\u0161echna aktivn\u00ed m\u00edsta, naz\u00fdvan\u00e1 tak\u00e9 anodick\u00e1 m\u00edsta, na povrchu kov\u016f p\u0159em\u011bn\u00ed na pasivn\u00ed m\u00edsta, zn\u00e1m\u00e1 tak\u00e9 jako katodick\u00e1 m\u00edsta. Katodick\u00e1 ochrana p\u0159ev\u00e1d\u00ed aktivn\u00ed na pasivn\u00ed m\u00edsta t\u00edm, \u017ee vytv\u00e1\u0159\u00ed elektrick\u00fd<\/a> proudu ze sekund\u00e1rn\u00edho zdroje. Tato str\u00e1nka zabra\u0148uje korozi<\/a> kovu a pracuje tak, aby byl kov neust\u00e1le chr\u00e1n\u011bn. Pl\u00e1nov\u00e1n\u00ed\u00a0kontrola katodick\u00e9 ochrany<\/a>\u00a0v\u00e1m pom\u016f\u017ee z\u00edskat lep\u0161\u00ed p\u0159edstavu o tom, jak\u00e1 katodick\u00e1 ochrana je nutn\u00e1 k ochran\u011b kov\u016f p\u0159ed galvanickou koroz\u00ed.<\/p>\n

Pou\u017e\u00edvejte podobn\u00e9 kovy<\/h2>\n

Dal\u0161\u00ed metodou prevence galvanick\u00e9 koroze je pou\u017eit\u00ed nepodobn\u00fdch kov\u016f. To m\u016f\u017ee omezit vznik galvanick\u00e9 koroze. Tato str\u00e1nka typ koroze<\/a> je v\u00fdsledkem spojen\u00ed r\u016fznorod\u00fdch kov\u016f s podobnou strukturou vodivou cestou. Omezen\u00edm pou\u017e\u00edvan\u00fdch kov\u016f pouze na ty, kter\u00e9 jsou pova\u017eov\u00e1ny za podobn\u00e9 a maj\u00ed p\u0159irozenou odolnost proti korozi, minimalizujete galvanickou korozi. A\u010dkoli tato metoda m\u016f\u017ee b\u00fdt u\u017eite\u010dn\u00e1, nen\u00ed bez dal\u0161\u00ed formy ochrany nijak zvl\u00e1\u0161\u0165 \u00fa\u010dinn\u00e1, zejm\u00e9na u kov\u016f, kter\u00e9 \u017eij\u00ed ve vlhk\u00e9m nebo mokr\u00e9m prost\u0159ed\u00ed.<\/p>\n

Nanesen\u00ed ob\u011btn\u00edho povlaku<\/h2>\n

Dal\u0161\u00ed metodou prevence galvanick\u00e9 koroze je nanesen\u00ed vrstvy n\u00e1t\u011bru zn\u00e1m\u00e9 jako ob\u011btovan\u00fd povlak. N\u00e1t\u011br pracuje na ochran\u011b<\/a> kovu p\u0159ed koroz\u00ed t\u00edm, \u017ee s\u00e1m p\u0159eb\u00edr\u00e1 hlavn\u00ed t\u00edhu po\u0161kozen\u00ed. Nejedn\u00e1 se o trval\u00e9 \u0159e\u0161en\u00ed a n\u00e1t\u011br je t\u0159eba \u010dasto opakovat, aby byl povlak neporu\u0161en\u00fd a neust\u00e1le chr\u00e1nil kov. Tuto metodu je dobr\u00e9 spojit s metodou pou\u017eit\u00ed podobn\u00fdch kov\u016f.<\/p>\n

Pro v\u0161echny va\u0161e pot\u0159eby v oblasti katodick\u00e9 ochrany a prevence galvanick\u00e9 koroze se obra\u0165te na spole\u010dnost Dreiym Engineering, kde se n\u00e1\u0161 t\u00fdm profesion\u00e1ln\u00edch in\u017een\u00fdr\u016f postar\u00e1 o ochranu va\u0161ich kov\u016f p\u0159ed po\u0161kozen\u00edm galvanickou koroz\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

Galvanic corrosion is the most common type of corrosion. It is the result of two metals with varying electrochemical energy levels linking via a conductive path. It\u2019s very common for dissimilar metals with similar structures to experience galvanic corrosion because of their different energy levels. Galvanic corrosion is typically detrimental to metals and can quickly […]<\/p>\n","protected":false},"author":8,"featured_media":3420,"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":144,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-2836","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-corrosion-and-cathodic-protection"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t