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

Chinese Journal of Applied Chemistry ›› 1992, Vol. 0 ›› Issue (1): 79-81.

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

Song Guangling, Cao Chunan, Lin Haichao

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

Abstract

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

Song Guangling, Cao Chunan, Lin Haichao. EFFECTS OF ALTERNATING VOLTAGE(AV) MODULATING PASSIVATION AND POSTTREATMENT ON THE PASSIVE FILM OF STAINLESS STEEL[J]. Chinese Journal of Applied Chemistry, 1992, 0(1): 79-81.

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

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