Chromate conversion coating resulting in the formation of a passivating film.
铬酸盐转化镀层导致形成钝化膜。只能使用三价铬。
It is shown that a chromate conversion coating needs to be used together with the non -chromate primer to meet the corrosion protective requirements.
试验结果表明：非铬涂层需配以含铬的转化涂层才能够满足防腐性能的要求。
The cerium conversion coating, which was prepared properly, would provide a better protection a-gainst corrosion for zinc and galvanized steel than the chromate conversion coating did.
在一定条件下，铈转化膜对锌和镀锌钢的肪蚀效果优于铬酸盐转化膜。
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