n. chromating
为减少锌镀层的腐蚀速率，通常采用铬酸盐钝化。
In order to reduce corrosive rate, zinc plated parts are usually chromatized.
锌镀层经铬酸盐钝化之后，耐蚀性可提高6 ~ 8倍。
Zinc plating chromic acid salt after the passivation, corrosion resistance can improve 6 to 8 times.
铬酸盐钝化处理是提高化学镀层抗腐蚀性能的一条重要途径。
Passivating treatment by chromate is an important way to improve the corrosion resistance of electro-less plating.
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