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Aqueous acidic chromium-free passivation solution for the treatment of metal surfaces
Aqueous acidic chromium-free passivation solution for the treatment of metal surfaces
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机译:酸性无铬钝化水溶液,用于金属表面处理
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摘要
Aqueous acid solutions for treating metal surfaces such as aluminum and galvanized steel are disclosed. The solutions are mixtures of organophosphates or phosphonates and chloride or fluoride. The treating solutions can be used in place of chromium treating solutions.
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