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电化学(中英文) ›› 1995, Vol. 1 ›› Issue (2): 193-197. 

• 研究论文 • 上一篇    下一篇

不锈钢上黑色钼盐转化膜的研究

方景礼,刘琴,韩克平,陈耀辉   

  1. 南京大学应用化学研究所配位化学国家重点实验室
  • 收稿日期:1995-05-28 修回日期:1995-05-28 出版日期:1995-05-28 发布日期:1995-05-28

Studies of the Black Molybdate Conversion Film on Stainless Steel

Fang Jingli; LiuQin; Han Keping; Chen Yaohui   

  1. (Applied Chem. Inst.,State Key Lab. Coordination Chemistry,Nanjing University, Nanjing 210093
  • Received:1995-05-28 Revised:1995-05-28 Published:1995-05-28 Online:1995-05-28

摘要: 用阴极电沉积法从钼酸盐和磷酸盐温和溶液中获得了黑色的不锈钢转化膜,该膜具有良好的热稳定性。电子能谱(XPS和AES)分析表明,膜厚约为820nm,膜的表面铝以Mo(Ⅵ)存在,而在膜内则以Mo(Ⅵ)与Mo(Ⅳ)共存。从AES深度剥蚀曲线的组成恒定区求得膜的组成为:O50.9%,Mo29.4%,P12.6%和Fe7.1%。循环伏安的氧化峰也证明膜内存在Mo(Ⅳ)。

关键词: 彩色膜, 钼酸盐, 不锈钢, 电子能谱, 循环伏安

Abstract: A black conversion film was formed on stainless steel with cathodicelectrodeposition method from a molybdate-phosphate solution. This film displayed goodthemcotability. The results of XPS and AES analysis showed that the thickness of the film was 820 nmand that Mo existed as Mo(Ⅵ)in the surface of the film,while existed as Mo(Ⅵ)and Mo(Ⅳ)in theinternal layer of the film. The relative atomic percent content(A,C.% of the film obtained from theelemental composition constant region of the depth profile curves by AES was O 50.9%,Mo 29.4%,P12.6%and Fe 7.1%respectively.The cyclevoltammetric oxluation peak also showed that Mo(Ⅳ)existed in the internal layer of the film.

Key words: colorring film, Molybdate, stainless steel, XPS, AES, Cyclevoltammetry.

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