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Citation: Song Guangling, Cao Chunan, Xia Bangjie, Lin Haichao. ON THE TRANSPASSIVATION AND POSTTREATMENT OF STAINLESS STEEL[J]. Chinese Journal of Applied Chemistry, ;1992, 9(4): 114-116. shu

ON THE TRANSPASSIVATION AND POSTTREATMENT OF STAINLESS STEEL

1.
Institute of Corrosion and Protection of Metals, Academia Sinica, Shenyang 110015

Corresponding author: Song Guangling,
Received Date: 6 January 1992
Available Online: 9 March 1992
Fund Project:

The activation time of transpassive film formed on 304 stainless steel in the transpassivation region is almost 2 magnitude of order higher than that of passive film formed in passivation region and its breakdown potential is strikingly improved if post-treatment is conducted in a McO₄^2- containing solution.It is believed that the enhancement of stability of surface film by transpassivation and post-treatment is ascribed to increase of film thickness,higher ratio of Fe³⁺/Fe²⁺ and the adsorption of molybdenum into film.
- 304 stainless steel,
- passivation,
- transpassivation,
- molybdate,
- post treatment
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