Thaum cov khoom galvanized yog nruj nreem sib sau ua ke thiab muab tso rau hauv cov huab cua ntub, electrochemical corrosion yuav tshwm sim vim qhov chaw ntawm lub plating ntawm lub plating ntawm lub plating yam tsis muaj kev ywj pheej ntws cua plating, tsim dawb xeb. Vim yog cov dej coagulation thiab oxygen rau saum npoo ntawm txheej galvanized. Tom qab cov nyhuv ntawm carbon dioxide, hydrogen sulfide, sulfur dioxide, oxide, thiab lwm yam., tom qab cov nyhuv ntawm lwm yam chemical gas, nws yuav tsim ib tug corrosive aqueous tov thiab txuas mus rau lub nto ntawm zinc txheej los tsim ib tug electrolyte. Yog li ntawd, lub zos dawb dot-shaped khoom (zinc oxide) dawb xeb yog tsim los ntawm qhov muag liab qab, thiab lub zos dub tsos ntawm dawb xeb theem nrab thiab thib peb-lub sij hawm oxidation cov khoom yog collectively hu ua qhov tshwm sim ntawm alkali rov qab.
