镀锌层无铬钼酸盐钝化液的研究进程经历了由钼酸盐+磷酸盐体系发展到该体系加添加剂(无机或有机化合物)的钝化液体系的过程.为了增加钝化膜的膜厚,封闭微裂纹,达到高耐蚀的目的,列举了将无机盐和有机化合物复配以获得复合钝化膜的钝化工艺.其中较为成功的钝化液是钼酸盐与硅烷的复配体系,所获得的钝化膜的性能已接近、达到或超过了铬酸盐钝化膜的耐蚀水平.最后提出了一些尚待解决的问题.
The passivation technologies for preparing composite passivation films on electroplated Zn and Zn alloy coatings from Cr-free molybdate solution containing formulated inorganic salts and organic compounds were introduced in relation to increasing thickness of the passivation film, sealing micro-cracks and improving corrosion resistance of the film. It was pointed out in the history of study on Cr-free molybdate passivation solution, a transition from molybdate plus phosphate systems to the same systems doped with inorganic and/or organic additives had been involved.One of the most successful passivation solution was molybdate-silane combinatory system, which could be used to prepare passivation films with nearly the same, comparable or better corrosion resistanee as compared with chromate passivation film. Finally,some problems along with Cr-free passivation solution for electroplated Zn and Zn alloy coatings were suggested.
参考文献
[1] | 张春丽,叶学海,张晓波,于晓薇,付春明.镀锌板无铬钝化技术的研究进展[C].第六届表面工程技术学术论坛论文集,2008:141-143. |
[2] | 吴海江 .环境友好型热镀锌层无铬保护膜的研究[D].华南理工大学,2006. |
[3] | 宋进兵 .镀锌钢的酸盐钝化处理研究[D].广州:华南理工大学,1999. |
[4] | Diamantino TC;Guilhermino L;Almeida E;Soares AM .Toxicity of sodium molybdate and sodium dichromate to Daphnia magna straus evaluated in acute, chronic, and acetylcholinesterase inhibition tests.[J].Ecotoxicology and Environmental Safety,2000(3):253-259. |
[5] | 张润建;莫金垣;黄前海 等.钼酸盐电化学法金属表面发黑工艺[P].中国,85101608 A,1986-10-01. |
[6] | 郝建军,安成强,刘常升.磷钼杂多酸钝化工艺研究[J].材料保护,2005(07):28-30. |
[7] | 肖鑫,钟萍,易翔.一种新型镀锌层无铬钝化工艺[J].腐蚀与防护,2007(09):467-469. |
[8] | 肖鑫,龙有前,钟萍,祁燕飞.锌镀层钼酸盐-氟化锆体系钝化工艺研究[J].腐蚀科学与防护技术,2005(03):184-186. |
[9] | 吴成剑 .镀锌钢板钼酸盐/磷酸盐钝化研究[D].北京化工大学,2008. |
[10] | 郝建军,安成强,刘常升.不同添加剂对镀锌层钼酸盐钝化膜腐蚀电化学性能的影响[J].材料保护,2006(10):23-25. |
[11] | 陈锦虹;卢锦堂;许乔瑜 等.用于保护镀锌层的无铬钝化液及其涂覆方法[P].中国,1268583 A,2000-10-14. |
[12] | 吴海江,卢锦堂.热镀锌钢板钼酸盐/硅烷复合膜层的耐腐蚀性能[J].材料保护,2008(10):10-13. |
- 下载量()
- 访问量()
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%