镀锌本色钝化工艺的研究

A Study of Natural Color Passivation Process for Zinc Plating

研究一种兼顾产品外观与防腐要求的改良工艺,并通过EIS谱图、极化曲线以及中性盐雾实验评价产品的耐蚀性。结果表明:试样经过三价铬彩锌钝化+封闭处理后,其耐蚀性得到了很大的提高,并且满足了外观上的要求。

An improved modified process was studied, which gave attention to both appearance and anti-corrosion requirements of the products. And the corrosion resistance of the products was evaluated by electrochemical impedance spectroscopy （EIS）, electrochemical polarization curve, and neutral salt spray （NSS） test. The results show that processed by trivalent chromium color zinc passivation and sealed, the samples are much improved in their corrosion resistance, and can satisfy the requirements for their appearance as well.