应用化学 ›› 1992, Vol. 0 ›› Issue (1): 79-81.

• 研究简报 • 上一篇    下一篇

载波钝化和钼酸盐后处理对不锈钢钝化膜性能的影响

宋光铃, 曹楚南, 林海潮   

  1. 中国科学院金属腐蚀与防护研究所, 腐蚀科学开放研究实验室, 沈阳 110015
  • 收稿日期:1990-10-22 修回日期:1991-04-12 出版日期:1992-02-10 发布日期:1992-02-10

EFFECTS OF ALTERNATING VOLTAGE(AV) MODULATING PASSIVATION AND POSTTREATMENT ON THE PASSIVE FILM OF STAINLESS STEEL

Song Guangling, Cao Chunan, Lin Haichao   

  1. Conosion Science Laboratory, Institute of corrosion and protection of metals Academia Sinica, Shenyang 110015
  • Received:1990-10-22 Revised:1991-04-12 Published:1992-02-10 Online:1992-02-10

摘要: 一般认为交流电对金属的腐蚀过程具有加速作用[1],但我们发现,在直流电位基础上叠加适当波形、幅值和频率的交流电对不锈钢进行载波钝化,尔后再进行适当后处理可使钝化膜的稳定性提高[2],我们曾就不经后处理的载波钝化过程进行过探讨[3],本文着重探讨钼酸盐后处理对载波钝化膜表面状态和化学稳定性改善的作用机理。

关键词: 不锈钢, 钝化, 载波钝化, 钼酸盐

Abstract: By means of electrochemical method, ellipsometry and AES analysis, the stability of the passive film formed after A.V. modulating passivation and post-treatment was studied. The results show that the defect points can be removed and the surface of the passive film is roughened through A. V. modulating passivation. The adsorption of Mo-Containing ion on the surface of the passive film during post-treatment becomes easier,which further increases the stability of the passive film. A more striking improvement of the stability of the passive film was observed on 302 stainless steel than cn 316 stainless steel.

Key words: stainless, steel, passivation, post-treatment, A. V. modulation