环保型镀锌层钝化工艺研究概况

Research status of environment-friendly passivation processes for zinc plating coatings

综述了国内外关于镀锌层钝化的研究工作,主要涉及目前研究较多的几种低毒或无毒钝化工艺,如三价铬钝化,钼酸盐钝化,钨酸盐钝化,稀土盐钝化,钛盐钝化,硅酸盐钝化和有机类化合物钝化等。分别介绍了各种钝化工艺的特点及研究概况,指出了镀锌板无铬钝化的发展方向和前景。

The research on passivation processes of Zn plating coatings at home and abroad was summarized with focus on some low-and non-toxic passivation processes which are studied widely at present, such as passivation with trivalent chromium, molybdate, tungstate, rare earth salts, titanate, silicate and organic compounds. The features and research status of individual process were introduced. The development trend and prospect of non-chromium passivation on Zn-plated sheet were described.