Tus nqi corrosion ntawm zinc coatings nws txawv nyob ntawm seb qhov xwm ntawm zinc ntsev (cov khoom corrosion) tsim nyob rau saum npoo ntawm zinc txheej nyob rau hauv ntau yam xwm txheej. Yog tias zinc ntsev tsis soluble ntau hauv cov tshuaj corrosive, xws li zinc hydroxide, lawv tuaj yeem tiv thaiv cov zinc hauv qab txheej. Piv txwv li, yog hais tias cov zinc generated ntsev muaj solubility siab, lawv tsis tuaj yeem los yog tsis tshua muaj kev tiv thaiv rau hauv qab zinc txheej, uas ua rau tus nqi corrosion sai dua.
Yog li ntawd, cov ntsiab lus tseem ceeb uas ua rau muaj kev txhim kho corrosion muaj xws li: cov ntsiab lus sulfur siab hauv huab cua, huab cua ntau dhau, muaj ntau yam khoom xws li plua plav, thunderstorms, siab oxygen cov ntsiab lus nyob rau hauv aqueous tov ntawm zinc txheej, thiab ib tug tov. pH tus nqi ntawm 1 txog 6 thiab 12.5 txog 14.5. Cov impurities nyob rau hauv zinc txheej feem ntau muaj kev cuam tshuam me ntsis nyob rau hauv atmospheric tej yam kev mob, tshwj tsis yog nyob rau hauv muaj zog acid daws qhov twg lawv accelerate corrosion ntawm zinc txheej los ntawm kev tsim micro-roj teeb. Hauv kev daws teeb meem alkaline muaj zog, tus nqi corrosion ntawm zinc txheej kuj tseem yuav nce ntxiv.
