|
|
|
| ELECTROCHEMICAL BEHAVIOR OF 316L STAINLESS STEEL IN ACETIC ACID WITH ADDITION OF Cl- AT HIGH TEMPERATURE |
|
Cite this article:
. ELECTROCHEMICAL BEHAVIOR OF 316L STAINLESS STEEL IN ACETIC ACID WITH ADDITION OF Cl- AT HIGH TEMPERATURE. Acta Metall Sin, 2006, 42(3): 299-304 .
|
|
|
Abstract The corrosion and electrochemical behavior of 316L stainless steel in acetic acid solutions at 85℃ has been investigated. Acetic acid concentration tested was 60% and included addition of 0.2% KCl. Of key interest was the trends of corrosion potential on initial period. Corrosion potential–time measurements were undertaken after the samples exposed to the air for 24 h were polarized anodically and cathodically in acetic acid solution. With analyzing of the curves of electrochemical polarization and SEM and EDS data of the samples ,corrosion and electrochemical behavior and mechanism of localized corrosion of 316L stainless steel in acetic acid solution with Cl- were discussed. The results show that the samples exposed to the air previously for 24 h can be passivated automatically in acetic acid solution with Cl- with the corrosion potential remaining 100mV(SCE).No such phenomenon was observed for samples which were cathodically polarized with the corrosion potential stabilizing at a value of -242±3mv. The passive film formed by anodically polarizing is more proof than formed in the air.
|
|
Received: 23 May 2005
|
|
|
[1] Yu C Y. Corros Protect Petrochem Ind, 1999; 16: 28 (余存烨．石油化工腐蚀与防护, 1999;16:28)
[2] Huang K Y. Appl Chem Ind, 2001; 30(2): 1 (黄魁元．应用化工,2001;30(2):1)
[3] Moreira R M, Franco C V, Joia C J B M, Giordana S, Mattos O R. Corros Sci, 2004; 46: 2987
[4] Cheng X L, Ma H Y, Chen S H, Yu R, Chen X, Yao Z M. Corros Sci, 1998; 41: 321
[5] Liu G Q, Zhu Z Y, Ke W. Acta Metall Sin, 2001; 37: 273 (刘国强,朱自勇,柯伟．金属学报,2001;37:273)
[6] Turnbull A, Ryan A, Willetts A. Corros Sci, 2003; 45: 1051
[7] Wang X Y, Wu Y S, Zhang L, Yu Z Y. Corros Sci Protect Technol, 2000; 12: 311 (汪轩义,吴荫顺,张琳,于正阳．腐蚀科学与防护技术,2000; 12:311)
[8] Otero E, Pardo A, Utrilla M V, Saenz E ,Alvarez J F. Corros Sci, 1998; 40: 1421
[9] Cao C N. Corrosion Electrochemical Principle. Beijing: Chemical Industry Press, 2004: 276 (曹楚南．腐蚀电化学原理．北京:化学工业出版社,2004:276)
[10] Yang D J, Shen Z S. Metal Corrosion Study. Beijing: Metallurgical Industry Press, 1999: 124 (杨德钧,沈卓身．金属腐蚀学．北京:冶金工业出版社,1999: 124)
[11] Wei B M, Hao L. J Chin Soc Corros Protect, 1987; 7: 199 (魏宝明,郝凌．中国腐蚀与防护学报, 1987;7:199)d |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
