发明授权
US5261973A Zinc phosphate conversion coating and process 失效
磷酸锌转化涂层及工艺

Zinc phosphate conversion coating and process
摘要:
Zinc phosphate coatings for metal surfaces and phosphating process. Concentrates containing (a) hydroxylamine sulfate and (b) zinc, nickel, manganese and phosphate ions are formulated into aqueous coating solutions for treating metal surfaces, including ferrous, zinc and aluminum surfaces.
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