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.
总结了碳钢和不锈钢以及铝、锌、铜、镁等金属及其合金稀土钝化处理的国内外研究状况。
The research status worldwide of rare earth passivation treatment of carbon steel and stainless steel, aluminum, zinc, copper, magnesium and its alloy were summarized.
锌镀层经钝化处理、染色或涂覆护光剂后，能显著提高其防护性和装饰性。
Zinc plating passivation, stained or coated guard light agent, can significantly improve the protective and decorative.
利用电化学方法分别研究了晶粒尺寸对纯锌及其表面三价铬钝化膜腐蚀行为的影响。
The effects of grain size on the electrochemical corrosion behaviors of zinc and trivalent chromium passivation film on zinc have been studied respectively by electrochemical methods.
采用正交试验法对锌-铁合金镀层三价铬黑色钝化工艺进行优化，并研究了工艺参数对钝化膜外观和耐蚀性等影响。
The bath compositions of trivalent chrome black passivation for zinc-iron alloy coating were optimized by orthogonal test method.
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.
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.
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