{"id":10916,"date":"2025-12-06T11:34:43","date_gmt":"2025-12-06T11:34:43","guid":{"rendered":"https:\/\/anocoteczprd.wpenginepowered.com\/?page_id=10916"},"modified":"2025-12-23T13:38:30","modified_gmt":"2025-12-23T13:38:30","slug":"technical-information","status":"publish","type":"page","link":"https:\/\/www.anocote.cz\/en\/technical-information\/","title":{"rendered":"Technical Information"},"content":{"rendered":"
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Technical Information\n<\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Corrosion Protection & Prevention<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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All coatings, whether metallic or non-metallic, when applied to steel and other metals provide a protective barrier envelope for the prevention of corrosion of the underlying metal or alloy. Non-metallic coatings (paints, lacquers, oils and waxes, etc.) are electrically non-conductive and relatively inert. When uniformly applied, protection is provided so long as the surface film is not damaged. In contrast, metallic coatings are conductive and have a more active role in the prevention and control of corrosion.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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The galvanic series of metals and alloys indicates the behaviour to be expected when dissimilar metals are in contact, including where metallic coatings are applied to other metal surfaces and where they are to be used in applications where the surface is wetted. For example, where steel is protected by coatings which are inherently more corrosion resistant (more noble), the protection is maintained so long as the coating envelope is complete. At points of surface damage, pinholes or porosity, accelerated local attack on the underlying metal can be expected, as seen with nickel or chromium coatings on steel components.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Conversely, surface coatings of the less noble metals such as Al, Cd,Zn, Zn-Al (Zn Flake) are not only protective as an envelope but in addition actively prevent base metal corrosion wherever local damage to the coatings occurs. This action is known as \u201csacrificial protection\u201d because the surface film corrodes preferentially, albeit slowly, to the underlying steel. This phenomenon occurs in \u2018normal\u2019 environments but under some circumstances, the sacrificial protection does not occur, e.g. zinc on steel at temperatures above 85\u00b0C.Metallic coatings on metals, other than steel, have different effects depending upon the position of the metals in the galvanic series. This is why, for example, some coatings perform badly in contact with aluminium.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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The galvanic series can also be an important consideration in the design of assemblies to be used wholly or intermittently in wet service conditions in which dissimilar metal contacts occur. The degree to which this factor may affect a particular assembly can depend upon other aspects also and expert advice is often justifiable. There are beneficial influences of using specific coatings to prevent or diminish contact corrosion, e.g. zinc and zinc flake are suitable coatings which, when applied to steel and stainless steel, can protect connecting surfaces. In such circumstances, brass, nickel and copper coatings would accelerate aluminium corrosion. Excellent advice on bimetallic corrosion is given in BSPD 6484 \u201cCommentary on corrosion at bimetallic contacts and its alleviation\u201d.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Conversion \/ Passivate Coatings<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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To further enhance the corrosion resistance of zinc, the surface can be given a conversion coating with, usually, a chromium bearing solution. These coatings often contain hexavalent chromium which is a material that is controlled under the EU End of Life Vehicles Legislation effective July 2007. In most cases the hexavalent chromium can be replaced with trivalent chromium (which is considered harmless) but to the detriment of the corrosion resistance. This can be reinstated by the Leach-Seal process (JS 500 lacquers). The colours available are clear, yellow to iridescent, opaque, olive drab or black.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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A zinc coating can be modified by using a special solution to deposit an alloy. In some instances these alloys slow the rate of corrosion as they alter the magnitude of the current that flows due to the reduced potential.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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Galvanic Series of Metals and Alloys in Sea Water<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Ref. La Que a Cox, Proc. Amer. Soc. Test Mat 40, 670 (1940)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Published \u201cstandard electrode potential\u201d tables are obtained from thermodynamic data. They are seldom used to predict the degree or nature of the corrosion reaction occurring.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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If you would like further information on corrosion protection and prevention from an industry expert or to find out how Anochrome can assist you, please email us via the contact page, or alternatively you can call us on 420 495 221 331<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Technick\u00e9 Ochrana a prevence koroze V\u0161echny povlaky, a\u0165 u\u017e kovov\u00e9 nebo nekovov\u00e9, poskytuj\u00ed po nanesen\u00ed na ocel a jin\u00e9 kovy ochrannou bari\u00e9ru, kter\u00e1 zabra\u0148uje korozi podkladov\u00e9ho kovu nebo slitiny. Nekovov\u00e9 povlaky (barvy, laky, oleje a vosky atd.) jsou elektricky nevodiv\u00e9 a relativn\u011b inertn\u00ed. P\u0159i rovnom\u011brn\u00e9m nanesen\u00ed poskytuj\u00ed ochranu, dokud nen\u00ed po\u0161kozen povrchov\u00fd film. Naopak kovov\u00e9 povlaky jsou vodiv\u00e9 a hraj\u00ed aktivn\u011bj\u0161\u00ed roli v prevenci a kontrole koroze. Galvanick\u00e1 \u0159ada kov\u016f a slitin ud\u00e1v\u00e1 chov\u00e1n\u00ed, kter\u00e9 lze o\u010dek\u00e1vat p\u0159i kontaktu r\u016fzn\u00fdch kov\u016f, v\u010detn\u011b p\u0159\u00edpad\u016f, kdy jsou kovov\u00e9 povlaky naneseny na jin\u00e9 kovov\u00e9 povrchy a kdy jsou pou\u017e\u00edv\u00e1ny v aplikac\u00edch, kde je povrch sm\u00e1\u010den. Nap\u0159\u00edklad pokud je ocel chr\u00e1n\u011bna povlaky, kter\u00e9 jsou ze sv\u00e9 podstaty odoln\u011bj\u0161\u00ed proti korozi (u\u0161lechtilej\u0161\u00ed), je ochrana zachov\u00e1na, dokud je povlakov\u00e1 vrstva neporu\u0161en\u00e1. V m\u00edstech po\u0161kozen\u00ed povrchu, d\u00edrk\u00e1ch a p\u00f3rech lze o\u010dek\u00e1vat zrychlen\u00e9 lok\u00e1ln\u00ed napaden\u00ed podkladov\u00e9ho kovu, jako je tomu u niklo-chromov\u00fdch povlak\u016f na ocelov\u00fdch sou\u010d\u00e1stech. Naopak povrchov\u00e9 povlaky m\u00e9n\u011b u\u0161lechtil\u00fdch kov\u016f, jako jsou Al, Cd, Zn, Zn-Al (Zn Flake), nejen\u017ee chr\u00e1n\u00ed jako obal, ale nav\u00edc aktivn\u011b zabra\u0148uj\u00ed korozi z\u00e1kladn\u00edho kovu v\u0161ude tam, kde dojde k lok\u00e1ln\u00edmu po\u0161kozen\u00ed povlak\u016f. Tento jev se naz\u00fdv\u00e1 \u201eob\u011btn\u00ed ochrana\u201c, proto\u017ee povrchov\u00fd film koroduje p\u0159ednostn\u011b, i kdy\u017e pomalu, p\u0159ed podkladovou ocel\u00ed. K tomuto jevu doch\u00e1z\u00ed v \u201enorm\u00e1ln\u00edm\u201c prost\u0159ed\u00ed, ale za ur\u010dit\u00fdch okolnost\u00ed se ob\u011btn\u00ed ochrana neprojev\u00ed, nap\u0159. u zinku na oceli p\u0159i teplot\u00e1ch nad 85 \u00b0C. Kovov\u00e9 povlaky na kovech jin\u00fdch ne\u017e ocel maj\u00ed r\u016fzn\u00e9 \u00fa\u010dinky v z\u00e1vislosti na poloze kov\u016f v galvanick\u00e9 \u0159ad\u011b. Proto nap\u0159\u00edklad n\u011bkter\u00e9 povlaky maj\u00ed \u0161patn\u00e9 vlastnosti p\u0159i kontaktu s hlin\u00edkem. Galvanick\u00e1 \u0159ada m\u016f\u017ee b\u00fdt tak\u00e9 d\u016fle\u017eit\u00fdm faktorem p\u0159i navrhov\u00e1n\u00ed sestav, kter\u00e9 budou pou\u017e\u00edv\u00e1ny trvale nebo p\u0159eru\u0161ovan\u011b ve vlhk\u00e9m prost\u0159ed\u00ed, kde doch\u00e1z\u00ed ke kontaktu r\u016fzn\u00fdch kov\u016f. M\u00edra, do jak\u00e9 m\u016f\u017ee tento faktor ovlivnit konkr\u00e9tn\u00ed sestavu, m\u016f\u017ee z\u00e1viset i na dal\u0161\u00edch aspektech, a proto je \u010dasto na m\u00edst\u011b vyhledat odbornou radu. Pou\u017eit\u00ed specifick\u00fdch povlak\u016f m\u00e1 p\u0159\u00edzniv\u00fd vliv na prevenci nebo sn\u00ed\u017een\u00ed kontaktn\u00ed koroze, nap\u0159. zinek a zinkov\u00e9 vlo\u010dky jsou vhodn\u00e9 povlaky, kter\u00e9 p\u0159i nanesen\u00ed na ocel a nerezovou ocel mohou chr\u00e1nit spojovac\u00ed povrchy. V takov\u00fdch p\u0159\u00edpadech by povlaky z mosazi, niklu a m\u011bdi urychlily korozi hlin\u00edku. Vynikaj\u00edc\u00ed rady t\u00fdkaj\u00edc\u00ed se bimetalick\u00e9 koroze jsou uvedeny v BSPD 6484 \u201eKoment\u00e1\u0159 k korozi u bimetalick\u00fdch kontakt\u016f a jej\u00edmu zm\u00edrn\u011bn\u00ed\u201c. Konverzn\u00ed \/ pasiva\u010dn\u00ed povlaky Pro dal\u0161\u00ed zv\u00fd\u0161en\u00ed odolnosti zinku proti korozi lze povrch opat\u0159it konverzn\u00edm povlakem, obvykle roztokem obsahuj\u00edc\u00edm chrom. Tyto povlaky \u010dasto obsahuj\u00ed \u0161estimocn\u00fd chrom, kter\u00fd je l\u00e1tkou regulovanou podle sm\u011brnice EU o vozidlech s ukon\u010denou \u017eivotnost\u00ed platn\u00e9 od \u010dervence 2007. Ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f lze \u0161estimocn\u00fd chrom nahradit trojmocn\u00fdm chromem (kter\u00fd je pova\u017eov\u00e1n za ne\u0161kodn\u00fd), ale na \u00fakor odolnosti proti korozi. Tuto odolnost lze obnovit procesem Leach-Seal (laky JS 500). Z\u00edskan\u00e9 barvy jsou \u010dir\u00e9, \u017elut\u00e9 a\u017e duhov\u00e9, nepr\u016fhledn\u00e9, olivov\u011b zelen\u00e9 nebo \u010dern\u00e9. Zinkov\u00fd povlak lze modifikovat pomoc\u00ed speci\u00e1ln\u00edho roztoku k nanesen\u00ed slitiny. V n\u011bkter\u00fdch p\u0159\u00edpadech tyto slitiny zpomaluj\u00ed rychlost koroze, proto\u017ee m\u011bn\u00ed velikost proudu, kter\u00fd prot\u00e9k\u00e1 v d\u016fsledku sn\u00ed\u017een\u00e9ho potenci\u00e1lu. Galvanick\u00e1 \u0159ada kov\u016f a slitin v mo\u0159sk\u00e9 vod\u011b Ref. La Que a Cox, Proc. Amer. Soc. Test Mat 40, 670 (1940) Zve\u0159ejn\u011bn\u00e9 tabulky \u201estandardn\u00edho elektrodov\u00e9ho potenci\u00e1lu\u201c jsou z\u00edsk\u00e1ny z termodynamick\u00fdch \u00fadaj\u016f. Z\u0159\u00eddka se pou\u017e\u00edvaj\u00ed k p\u0159edpov\u011bdi stupn\u011b nebo povahy korozn\u00ed reakce. Pokud chcete z\u00edskat dal\u0161\u00ed informace o ochran\u011b a prevenci koroze od odborn\u00edka z oboru nebo zjistit, jak v\u00e1m m\u016f\u017ee spole\u010dnost Anocote pomoci, za\u0161lete n\u00e1m e-mail prost\u0159ednictv\u00edm str\u00e1nky Kontakt nebo n\u00e1m zavolejte na \u010d\u00edslo 420 495 221 331.<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_acf_changed":false,"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-10916","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nTechnick\u00e9<\/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:\/\/www.anocote.cz\/en\/technical-information\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Technick\u00e9\" \/>\n<meta property=\"og:description\" content=\"Technick\u00e9 Ochrana a prevence koroze V\u0161echny povlaky, a\u0165 u\u017e kovov\u00e9 nebo nekovov\u00e9, poskytuj\u00ed po nanesen\u00ed na ocel a jin\u00e9 kovy ochrannou bari\u00e9ru, kter\u00e1 zabra\u0148uje korozi podkladov\u00e9ho kovu nebo slitiny. Nekovov\u00e9 povlaky (barvy, laky, oleje a vosky atd.) jsou elektricky nevodiv\u00e9 a relativn\u011b inertn\u00ed. P\u0159i rovnom\u011brn\u00e9m nanesen\u00ed poskytuj\u00ed ochranu, dokud nen\u00ed po\u0161kozen povrchov\u00fd film. Naopak kovov\u00e9 povlaky jsou vodiv\u00e9 a hraj\u00ed aktivn\u011bj\u0161\u00ed roli v prevenci a kontrole koroze. Galvanick\u00e1 \u0159ada kov\u016f a slitin ud\u00e1v\u00e1 chov\u00e1n\u00ed, kter\u00e9 lze o\u010dek\u00e1vat p\u0159i kontaktu r\u016fzn\u00fdch kov\u016f, v\u010detn\u011b p\u0159\u00edpad\u016f, kdy jsou kovov\u00e9 povlaky naneseny na jin\u00e9 kovov\u00e9 povrchy a kdy jsou pou\u017e\u00edv\u00e1ny v aplikac\u00edch, kde je povrch sm\u00e1\u010den. Nap\u0159\u00edklad pokud je ocel chr\u00e1n\u011bna povlaky, kter\u00e9 jsou ze sv\u00e9 podstaty odoln\u011bj\u0161\u00ed proti korozi (u\u0161lechtilej\u0161\u00ed), je ochrana zachov\u00e1na, dokud je povlakov\u00e1 vrstva neporu\u0161en\u00e1. V m\u00edstech po\u0161kozen\u00ed povrchu, d\u00edrk\u00e1ch a p\u00f3rech lze o\u010dek\u00e1vat zrychlen\u00e9 lok\u00e1ln\u00ed napaden\u00ed podkladov\u00e9ho kovu, jako je tomu u niklo-chromov\u00fdch povlak\u016f na ocelov\u00fdch sou\u010d\u00e1stech. Naopak povrchov\u00e9 povlaky m\u00e9n\u011b u\u0161lechtil\u00fdch kov\u016f, jako jsou Al, Cd, Zn, Zn-Al (Zn Flake), nejen\u017ee chr\u00e1n\u00ed jako obal, ale nav\u00edc aktivn\u011b zabra\u0148uj\u00ed korozi z\u00e1kladn\u00edho kovu v\u0161ude tam, kde dojde k lok\u00e1ln\u00edmu po\u0161kozen\u00ed povlak\u016f. Tento jev se naz\u00fdv\u00e1 \u201eob\u011btn\u00ed ochrana\u201c, proto\u017ee povrchov\u00fd film koroduje p\u0159ednostn\u011b, i kdy\u017e pomalu, p\u0159ed podkladovou ocel\u00ed. K tomuto jevu doch\u00e1z\u00ed v \u201enorm\u00e1ln\u00edm\u201c prost\u0159ed\u00ed, ale za ur\u010dit\u00fdch okolnost\u00ed se ob\u011btn\u00ed ochrana neprojev\u00ed, nap\u0159. u zinku na oceli p\u0159i teplot\u00e1ch nad 85 \u00b0C. Kovov\u00e9 povlaky na kovech jin\u00fdch ne\u017e ocel maj\u00ed r\u016fzn\u00e9 \u00fa\u010dinky v z\u00e1vislosti na poloze kov\u016f v galvanick\u00e9 \u0159ad\u011b. Proto nap\u0159\u00edklad n\u011bkter\u00e9 povlaky maj\u00ed \u0161patn\u00e9 vlastnosti p\u0159i kontaktu s hlin\u00edkem. Galvanick\u00e1 \u0159ada m\u016f\u017ee b\u00fdt tak\u00e9 d\u016fle\u017eit\u00fdm faktorem p\u0159i navrhov\u00e1n\u00ed sestav, kter\u00e9 budou pou\u017e\u00edv\u00e1ny trvale nebo p\u0159eru\u0161ovan\u011b ve vlhk\u00e9m prost\u0159ed\u00ed, kde doch\u00e1z\u00ed ke kontaktu r\u016fzn\u00fdch kov\u016f. M\u00edra, do jak\u00e9 m\u016f\u017ee tento faktor ovlivnit konkr\u00e9tn\u00ed sestavu, m\u016f\u017ee z\u00e1viset i na dal\u0161\u00edch aspektech, a proto je \u010dasto na m\u00edst\u011b vyhledat odbornou radu. Pou\u017eit\u00ed specifick\u00fdch povlak\u016f m\u00e1 p\u0159\u00edzniv\u00fd vliv na prevenci nebo sn\u00ed\u017een\u00ed kontaktn\u00ed koroze, nap\u0159. zinek a zinkov\u00e9 vlo\u010dky jsou vhodn\u00e9 povlaky, kter\u00e9 p\u0159i nanesen\u00ed na ocel a nerezovou ocel mohou chr\u00e1nit spojovac\u00ed povrchy. V takov\u00fdch p\u0159\u00edpadech by povlaky z mosazi, niklu a m\u011bdi urychlily korozi hlin\u00edku. Vynikaj\u00edc\u00ed rady t\u00fdkaj\u00edc\u00ed se bimetalick\u00e9 koroze jsou uvedeny v BSPD 6484 \u201eKoment\u00e1\u0159 k korozi u bimetalick\u00fdch kontakt\u016f a jej\u00edmu zm\u00edrn\u011bn\u00ed\u201c. Konverzn\u00ed \/ pasiva\u010dn\u00ed povlaky Pro dal\u0161\u00ed zv\u00fd\u0161en\u00ed odolnosti zinku proti korozi lze povrch opat\u0159it konverzn\u00edm povlakem, obvykle roztokem obsahuj\u00edc\u00edm chrom. Tyto povlaky \u010dasto obsahuj\u00ed \u0161estimocn\u00fd chrom, kter\u00fd je l\u00e1tkou regulovanou podle sm\u011brnice EU o vozidlech s ukon\u010denou \u017eivotnost\u00ed platn\u00e9 od \u010dervence 2007. Ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f lze \u0161estimocn\u00fd chrom nahradit trojmocn\u00fdm chromem (kter\u00fd je pova\u017eov\u00e1n za ne\u0161kodn\u00fd), ale na \u00fakor odolnosti proti korozi. Tuto odolnost lze obnovit procesem Leach-Seal (laky JS 500). Z\u00edskan\u00e9 barvy jsou \u010dir\u00e9, \u017elut\u00e9 a\u017e duhov\u00e9, nepr\u016fhledn\u00e9, olivov\u011b zelen\u00e9 nebo \u010dern\u00e9. Zinkov\u00fd povlak lze modifikovat pomoc\u00ed speci\u00e1ln\u00edho roztoku k nanesen\u00ed slitiny. V n\u011bkter\u00fdch p\u0159\u00edpadech tyto slitiny zpomaluj\u00ed rychlost koroze, proto\u017ee m\u011bn\u00ed velikost proudu, kter\u00fd prot\u00e9k\u00e1 v d\u016fsledku sn\u00ed\u017een\u00e9ho potenci\u00e1lu. Galvanick\u00e1 \u0159ada kov\u016f a slitin v mo\u0159sk\u00e9 vod\u011b Ref. La Que a Cox, Proc. Amer. Soc. Test Mat 40, 670 (1940) Zve\u0159ejn\u011bn\u00e9 tabulky \u201estandardn\u00edho elektrodov\u00e9ho potenci\u00e1lu\u201c jsou z\u00edsk\u00e1ny z termodynamick\u00fdch \u00fadaj\u016f. Z\u0159\u00eddka se pou\u017e\u00edvaj\u00ed k p\u0159edpov\u011bdi stupn\u011b nebo povahy korozn\u00ed reakce. Pokud chcete z\u00edskat dal\u0161\u00ed informace o ochran\u011b a prevenci koroze od odborn\u00edka z oboru nebo zjistit, jak v\u00e1m m\u016f\u017ee spole\u010dnost Anocote pomoci, za\u0161lete n\u00e1m e-mail prost\u0159ednictv\u00edm str\u00e1nky Kontakt nebo n\u00e1m zavolejte na \u010d\u00edslo 420 495 221 331.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.anocote.cz\/en\/technical-information\/\" \/>\n<meta property=\"og:site_name\" content=\"Anocote CR\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-23T13:38:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.anocote.cz\/wp-content\/uploads\/2025\/12\/hallam-magni.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"680\" \/>\n\t<meta property=\"og:image:height\" content=\"280\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/technicke\\\/\",\"url\":\"https:\\\/\\\/www.anocote.cz\\\/technicke\\\/\",\"name\":\"Technick\u00e9\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/technicke\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/technicke\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.anocote.cz\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/hallam-magni.jpg\",\"datePublished\":\"2025-12-06T11:34:43+00:00\",\"dateModified\":\"2025-12-23T13:38:30+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/technicke\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.anocote.cz\\\/technicke\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/technicke\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.anocote.cz\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/hallam-magni.jpg\",\"contentUrl\":\"https:\\\/\\\/www.anocote.cz\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/hallam-magni.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/technicke\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.anocote.cz\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Technick\u00e9\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/#website\",\"url\":\"https:\\\/\\\/www.anocote.cz\\\/\",\"name\":\"Anocote CR\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.anocote.cz\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/#organization\",\"name\":\"Anocote CR\",\"url\":\"https:\\\/\\\/www.anocote.cz\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.anocote.cz\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/Anocote-CR-master-logo-rgb.svg\",\"contentUrl\":\"https:\\\/\\\/www.anocote.cz\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/Anocote-CR-master-logo-rgb.svg\",\"width\":815,\"height\":233,\"caption\":\"Anocote CR\"},\"image\":{\"@id\":\"https:\\\/\\\/www.anocote.cz\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/anochrome\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Technical Information","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.anocote.cz\/en\/technical-information\/","og_locale":"en_GB","og_type":"article","og_title":"Technick\u00e9","og_description":"Technick\u00e9 Ochrana a prevence koroze V\u0161echny povlaky, a\u0165 u\u017e kovov\u00e9 nebo nekovov\u00e9, poskytuj\u00ed po nanesen\u00ed na ocel a jin\u00e9 kovy ochrannou bari\u00e9ru, kter\u00e1 zabra\u0148uje korozi podkladov\u00e9ho kovu nebo slitiny. Nekovov\u00e9 povlaky (barvy, laky, oleje a vosky atd.) jsou elektricky nevodiv\u00e9 a relativn\u011b inertn\u00ed. P\u0159i rovnom\u011brn\u00e9m nanesen\u00ed poskytuj\u00ed ochranu, dokud nen\u00ed po\u0161kozen povrchov\u00fd film. Naopak kovov\u00e9 povlaky jsou vodiv\u00e9 a hraj\u00ed aktivn\u011bj\u0161\u00ed roli v prevenci a kontrole koroze. Galvanick\u00e1 \u0159ada kov\u016f a slitin ud\u00e1v\u00e1 chov\u00e1n\u00ed, kter\u00e9 lze o\u010dek\u00e1vat p\u0159i kontaktu r\u016fzn\u00fdch kov\u016f, v\u010detn\u011b p\u0159\u00edpad\u016f, kdy jsou kovov\u00e9 povlaky naneseny na jin\u00e9 kovov\u00e9 povrchy a kdy jsou pou\u017e\u00edv\u00e1ny v aplikac\u00edch, kde je povrch sm\u00e1\u010den. Nap\u0159\u00edklad pokud je ocel chr\u00e1n\u011bna povlaky, kter\u00e9 jsou ze sv\u00e9 podstaty odoln\u011bj\u0161\u00ed proti korozi (u\u0161lechtilej\u0161\u00ed), je ochrana zachov\u00e1na, dokud je povlakov\u00e1 vrstva neporu\u0161en\u00e1. V m\u00edstech po\u0161kozen\u00ed povrchu, d\u00edrk\u00e1ch a p\u00f3rech lze o\u010dek\u00e1vat zrychlen\u00e9 lok\u00e1ln\u00ed napaden\u00ed podkladov\u00e9ho kovu, jako je tomu u niklo-chromov\u00fdch povlak\u016f na ocelov\u00fdch sou\u010d\u00e1stech. Naopak povrchov\u00e9 povlaky m\u00e9n\u011b u\u0161lechtil\u00fdch kov\u016f, jako jsou Al, Cd, Zn, Zn-Al (Zn Flake), nejen\u017ee chr\u00e1n\u00ed jako obal, ale nav\u00edc aktivn\u011b zabra\u0148uj\u00ed korozi z\u00e1kladn\u00edho kovu v\u0161ude tam, kde dojde k lok\u00e1ln\u00edmu po\u0161kozen\u00ed povlak\u016f. Tento jev se naz\u00fdv\u00e1 \u201eob\u011btn\u00ed ochrana\u201c, proto\u017ee povrchov\u00fd film koroduje p\u0159ednostn\u011b, i kdy\u017e pomalu, p\u0159ed podkladovou ocel\u00ed. K tomuto jevu doch\u00e1z\u00ed v \u201enorm\u00e1ln\u00edm\u201c prost\u0159ed\u00ed, ale za ur\u010dit\u00fdch okolnost\u00ed se ob\u011btn\u00ed ochrana neprojev\u00ed, nap\u0159. u zinku na oceli p\u0159i teplot\u00e1ch nad 85 \u00b0C. Kovov\u00e9 povlaky na kovech jin\u00fdch ne\u017e ocel maj\u00ed r\u016fzn\u00e9 \u00fa\u010dinky v z\u00e1vislosti na poloze kov\u016f v galvanick\u00e9 \u0159ad\u011b. Proto nap\u0159\u00edklad n\u011bkter\u00e9 povlaky maj\u00ed \u0161patn\u00e9 vlastnosti p\u0159i kontaktu s hlin\u00edkem. Galvanick\u00e1 \u0159ada m\u016f\u017ee b\u00fdt tak\u00e9 d\u016fle\u017eit\u00fdm faktorem p\u0159i navrhov\u00e1n\u00ed sestav, kter\u00e9 budou pou\u017e\u00edv\u00e1ny trvale nebo p\u0159eru\u0161ovan\u011b ve vlhk\u00e9m prost\u0159ed\u00ed, kde doch\u00e1z\u00ed ke kontaktu r\u016fzn\u00fdch kov\u016f. M\u00edra, do jak\u00e9 m\u016f\u017ee tento faktor ovlivnit konkr\u00e9tn\u00ed sestavu, m\u016f\u017ee z\u00e1viset i na dal\u0161\u00edch aspektech, a proto je \u010dasto na m\u00edst\u011b vyhledat odbornou radu. Pou\u017eit\u00ed specifick\u00fdch povlak\u016f m\u00e1 p\u0159\u00edzniv\u00fd vliv na prevenci nebo sn\u00ed\u017een\u00ed kontaktn\u00ed koroze, nap\u0159. zinek a zinkov\u00e9 vlo\u010dky jsou vhodn\u00e9 povlaky, kter\u00e9 p\u0159i nanesen\u00ed na ocel a nerezovou ocel mohou chr\u00e1nit spojovac\u00ed povrchy. V takov\u00fdch p\u0159\u00edpadech by povlaky z mosazi, niklu a m\u011bdi urychlily korozi hlin\u00edku. Vynikaj\u00edc\u00ed rady t\u00fdkaj\u00edc\u00ed se bimetalick\u00e9 koroze jsou uvedeny v BSPD 6484 \u201eKoment\u00e1\u0159 k korozi u bimetalick\u00fdch kontakt\u016f a jej\u00edmu zm\u00edrn\u011bn\u00ed\u201c. Konverzn\u00ed \/ pasiva\u010dn\u00ed povlaky Pro dal\u0161\u00ed zv\u00fd\u0161en\u00ed odolnosti zinku proti korozi lze povrch opat\u0159it konverzn\u00edm povlakem, obvykle roztokem obsahuj\u00edc\u00edm chrom. Tyto povlaky \u010dasto obsahuj\u00ed \u0161estimocn\u00fd chrom, kter\u00fd je l\u00e1tkou regulovanou podle sm\u011brnice EU o vozidlech s ukon\u010denou \u017eivotnost\u00ed platn\u00e9 od \u010dervence 2007. Ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f lze \u0161estimocn\u00fd chrom nahradit trojmocn\u00fdm chromem (kter\u00fd je pova\u017eov\u00e1n za ne\u0161kodn\u00fd), ale na \u00fakor odolnosti proti korozi. Tuto odolnost lze obnovit procesem Leach-Seal (laky JS 500). Z\u00edskan\u00e9 barvy jsou \u010dir\u00e9, \u017elut\u00e9 a\u017e duhov\u00e9, nepr\u016fhledn\u00e9, olivov\u011b zelen\u00e9 nebo \u010dern\u00e9. Zinkov\u00fd povlak lze modifikovat pomoc\u00ed speci\u00e1ln\u00edho roztoku k nanesen\u00ed slitiny. V n\u011bkter\u00fdch p\u0159\u00edpadech tyto slitiny zpomaluj\u00ed rychlost koroze, proto\u017ee m\u011bn\u00ed velikost proudu, kter\u00fd prot\u00e9k\u00e1 v d\u016fsledku sn\u00ed\u017een\u00e9ho potenci\u00e1lu. Galvanick\u00e1 \u0159ada kov\u016f a slitin v mo\u0159sk\u00e9 vod\u011b Ref. La Que a Cox, Proc. Amer. Soc. Test Mat 40, 670 (1940) Zve\u0159ejn\u011bn\u00e9 tabulky \u201estandardn\u00edho elektrodov\u00e9ho potenci\u00e1lu\u201c jsou z\u00edsk\u00e1ny z termodynamick\u00fdch \u00fadaj\u016f. Z\u0159\u00eddka se pou\u017e\u00edvaj\u00ed k p\u0159edpov\u011bdi stupn\u011b nebo povahy korozn\u00ed reakce. Pokud chcete z\u00edskat dal\u0161\u00ed informace o ochran\u011b a prevenci koroze od odborn\u00edka z oboru nebo zjistit, jak v\u00e1m m\u016f\u017ee spole\u010dnost Anocote pomoci, za\u0161lete n\u00e1m e-mail prost\u0159ednictv\u00edm str\u00e1nky Kontakt nebo n\u00e1m zavolejte na \u010d\u00edslo 420 495 221 331.","og_url":"https:\/\/www.anocote.cz\/en\/technical-information\/","og_site_name":"Anocote CR","article_modified_time":"2025-12-23T13:38:30+00:00","og_image":[{"width":680,"height":280,"url":"https:\/\/www.anocote.cz\/wp-content\/uploads\/2025\/12\/hallam-magni.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.anocote.cz\/technicke\/","url":"https:\/\/www.anocote.cz\/technicke\/","name":"Technical Information","isPartOf":{"@id":"https:\/\/www.anocote.cz\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.anocote.cz\/technicke\/#primaryimage"},"image":{"@id":"https:\/\/www.anocote.cz\/technicke\/#primaryimage"},"thumbnailUrl":"https:\/\/www.anocote.cz\/wp-content\/uploads\/2025\/12\/hallam-magni.jpg","datePublished":"2025-12-06T11:34:43+00:00","dateModified":"2025-12-23T13:38:30+00:00","breadcrumb":{"@id":"https:\/\/www.anocote.cz\/technicke\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.anocote.cz\/technicke\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.anocote.cz\/technicke\/#primaryimage","url":"https:\/\/www.anocote.cz\/wp-content\/uploads\/2025\/12\/hallam-magni.jpg","contentUrl":"https:\/\/www.anocote.cz\/wp-content\/uploads\/2025\/12\/hallam-magni.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/www.anocote.cz\/technicke\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.anocote.cz\/"},{"@type":"ListItem","position":2,"name":"Technick\u00e9"}]},{"@type":"WebSite","@id":"https:\/\/www.anocote.cz\/#website","url":"https:\/\/www.anocote.cz\/","name":"Anocote CR","description":"","publisher":{"@id":"https:\/\/www.anocote.cz\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.anocote.cz\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/www.anocote.cz\/#organization","name":"Anocote CR","url":"https:\/\/www.anocote.cz\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.anocote.cz\/#\/schema\/logo\/image\/","url":"https:\/\/www.anocote.cz\/wp-content\/uploads\/2025\/10\/Anocote-CR-master-logo-rgb.svg","contentUrl":"https:\/\/www.anocote.cz\/wp-content\/uploads\/2025\/10\/Anocote-CR-master-logo-rgb.svg","width":815,"height":233,"caption":"Anocote CR"},"image":{"@id":"https:\/\/www.anocote.cz\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/anochrome\/"]}]}},"_links":{"self":[{"href":"https:\/\/www.anocote.cz\/en\/wp-json\/wp\/v2\/pages\/10916","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.anocote.cz\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.anocote.cz\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.anocote.cz\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.anocote.cz\/en\/wp-json\/wp\/v2\/comments?post=10916"}],"version-history":[{"count":0,"href":"https:\/\/www.anocote.cz\/en\/wp-json\/wp\/v2\/pages\/10916\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.anocote.cz\/en\/wp-json\/wp\/v2\/media?parent=10916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}