The preparation of non-chromium Zn-Al coating (non-chromium dacromet coating) as well as its anti-corrosion mechanism,characteristics and current status are introduced.The performance of non-chromium Dacromet coating is also compared with that of the traditional Dacromet coating.According to the requirement of the environment protection,the traditional Dacromet coating will be replaced by the non-chromium Dacromet coating.
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