Acta Metall Sin  2006, Vol. 42 Issue (11): 1187-1190     DOI:

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THE INFLUENCE OF SULPHATE ION ON THE CRITICAL PITTING CORROSION TEMPERATURE OF 316 STAINLESS STEEL IN AQUEOUS SOLUTION CONTAINING CHLORIDE ION

LIAO Jiaxing; JIANG Yiming; WU Weiwei; ZHONG Cheng; LI Jin;SONG Hongwei

Department of Materials Science; Fudan University; Shanghai 200433

LIAO Jiaxing; JIANG Yiming; WU Weiwei; ZHONG Cheng; LI Jin; SONG Hongwei. THE INFLUENCE OF SULPHATE ION ON THE CRITICAL PITTING CORROSION TEMPERATURE OF 316 STAINLESS STEEL IN AQUEOUS SOLUTION CONTAINING CHLORIDE ION. Acta Metall Sin, 2006, 42(11): 1187-1190 .

Abstract References Related Articles Recommended Metrics Download:  PDF(635KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The influence of sulphate ion on the pitting corrosion behavior of 316 stainless steel has been studied by measuring the relationship of corrosion current and temperature in 0.5wt.% chloride ion solution at different concentration of sulphate ion under constant applied potentials. The results showed that with the increase of sulphate ion concentration, the passivation current of 316 stainless steel increased and the Open Circuit Potential of 316 stainless steel decreased; When the concentration of sulphate ion is less than 0.42wt.%, the critical pitting temperature of 316 stainless steel is lower than the value without sulphate ion, and when the concentration of sulphate ion is more than 0.42wt.%, the critical pitting temperature is higher than that value. The inhibition and acceleration effect of sulphate ion on the pitting corrosion was discussed by analyzing the mechanism of the ion-competitive adsorption. Key words:  Stainless steel      Critical pitting temperature (CPT)      Sulphate ion      Chloride ion       Received:  22 March 2006      ZTFLH:  TG174.3   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors LIAO Jiaxing JIANG Yiming WU Weiwei ZHONG Cheng LI Jin SONG Hongwei URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2006/V42/I11/1187 [1] Garfias-Mesias L F, Sykes J M. Corros Sci, 1999; 41: 959 [2] Burstein G T, Pistorius P C, Mattin S P. Corros Sci, 1993; 35: 57 [3] Abd E I, Meguid E A, Mahmoud N A, Gouda V K. Br Corros J, 1998; 33: 42 [4] Li M C, Zeng C L, Lin H C, Cao C N. Acta Metall Sin, 2002; 36: 1287 (李谋成,曾潮流,林海潮,曹楚南．金属学报,2002;36:1287) [5] Liu G Q, Zhu Z Y, Ke W. Acta Metall Sin, 2001; 37: 272 (刘国强,朱自勇,柯伟．金属学报,2001;37:272) [6] Sherbini E E, Rehim S S. 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