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US5000799A Zinc-nickel phosphate conversion coating composition and process 失效
锌 - 镍磷酸盐转化涂层组成及工艺

Zinc-nickel phosphate conversion coating composition and process
摘要:
The operation of zinc-nickel phosphate conversion coating of active metals is improved by using phosphating solutions containing formic acid or formate ions. Such solutions can work effectively at low temperatures and provide excellent substrates for paint, particularly that applied by electrodeposition.
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