What are the differences between galvanizing, cadmium plating, chromium plating, and nickel plating?

2021-05-23View Original

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Galvanizing: Zinc is relatively stable in dry air and does not change color easily. In water or humid atmospheres, it reacts with oxygen or carbon dioxide to form oxide layers or alkaline zinc carbonate films, which prevent further oxidation of the zinc and serve as a protective layer. Zinc is highly susceptible to corrosion in acids and alkalis, as well as in sulfides. The galvanized layer generally needs to undergo passivation treatment. After passivation in chromic acid or chromate solution, the formed passivation film does not easily react with humid air, thereby **enhancing** its corrosion resistance. For spring parts, thin-walled parts (wall thickness

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What are the differences between galvanizing, cadmium plating, chromium plating, and nickel plating?

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