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| ON THE TRANSPASSIVATION-REPASSIVATION OF TYPE 304 STAINLESS STEEL IN HIGH POTENTIAL RANGE |
| Song Guangling; Cao Chunan; Lin Haichao(Corrosion Science Laboratory;Institute of Corrosion and Protection Of Metals;Chinese Academy of Sciences) |
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Abstract An investigation on the transpassivation-repassivation of type 304 stainless steel in 0. 5 mol/ L H2SO4 was carried out, and a model concerned with electrochemical processes of the electrode was proposed With the aid of analyses of the steady process and the EIS of the electrode on the basis of the model, it is found that in the high potential range the transpassivation process is closely related with the electrochemical dissolution occurring on the interface between surface film and solution, and the repassivation is due to the sharp decrease in lower valence chides; while at the open circuit potential, the inverse electrochemical reaction plays an important role in maintaining the film formed in the high potential range, and makes the film more stable than normally passivated film.
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Received: 25 June 1994
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Cite this article:
Song Guangling; Cao Chunan; Lin Haichao(Corrosion Science Laboratory;Institute of Corrosion and Protection Of Metals;Chinese Academy of Sciences). ON THE TRANSPASSIVATION-REPASSIVATION OF TYPE 304 STAINLESS STEEL IN HIGH POTENTIAL RANGE. J Chin Soc Corr Pro, 1994, 14(3): 208-216.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1994/V14/I3/208
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| 1宋光铃,曹楚南,夏邦杰,林海潮．应用化学,1992,9(4):1142宋光铃,曹楚南,林海潮．中国腐蚀防护学报,1993,13(1):13ChaoCY,LinLF,MacdonaldDD．J．Electrochem．Soc,1981．128:11874CaoCN．ElectrochimicaActa,1990,75(5):831,8375曹楚南,腐蚀科学与防护技术,1990,2(1):16曹楚南,中国腐蚀与防护学报,1993,13(2);91 |
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