Q: Why are stainless steel tanks rust and corrosion inside?
A: Stainless steel has the capacity of resisting to atmospheric oxidation --- that is stainless steel, while also has the ability of ant-corrosion in acid, alkali and salt corrosion --- that is corrosion resistance. But the ability of the corrosion resistance changes with its chemical composition, plus each state, the use of conditions and the type of environmental media.
The stainless steel is a very thin layer of dense stable solid chromium-rich oxide film on urface (protective film), to prevent the infiltration of oxygen atoms invading, to oxidation, and access to anti-corrosion ability. Once there is some reason, this film was suffered destruction of air or liquid oxygen will continue to infiltrate or metal from the iron atom out of constant analysis, the formation of porous iron oxide, metal surface corrosion will be continuously. |
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