INFLUENCE OF SATURATED H$_2$S ON CORROSION BEHAVIOR OF 316L STAINLESS STEEL

J Chin Soc Corr Pro

2010, Vol. 30

Issue (3): 246-250 DOI:

Research Articles

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INFLUENCE OF SATURATED H$_2$S ON CORROSION BEHAVIOR OF 316L STAINLESS STEEL

TANG Junwen¹, SHAO Yawei¹, ZHANG Tao¹, MENG Guozhe¹,WANG Fuhui^1,2

1. Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology Ministry of Education, Harbin Engineering University, Harbin 150001
2. State Key Laboratory for Corrosion and Protection, Institute of Metals Research, Chinese Academy of Sciences, Shenyang 110016

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Abstract

The corrosion behavior of 316L stainless steel in H₂S-HCl-H₂O environment at 80℃ was investigated by potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS) and electrochemical noise (EN). The parameters derived from shot noise theory combined stochastic theory had been employed to analyze the corrosion mechanism of 316L stainless steel in H₂S-HCl-H₂O environment at 80℃. The polarization curves of 316L stainless steel indicated that there existed an obvious passivation characteristic without H₂S, and active dissolution with saturated H₂S. The corrosion process of 316L stainless steel was promoted greatly with addition of saturated H₂S. An analysis of the electrochemical noise data based upon the combined stochastic theory and shot-noise theory showed that the characteristic frequency of corrosion of 316L stainless steel were increased and the development of corrosion of 316L stainless steel became much easy with addition of saturated H₂S.

Key words: 316L stainless steel H₂S corrosion EN

Received: 04 January 2009

ZTFLH:

TG172

Corresponding Authors: SHAO Yawei E-mail: ywshao@tom.com

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Cite this article:

TANG Junwen, SHAO Yawei, ZHANG Tao, MENG Guozhe,WANG Fuhui. INFLUENCE OF SATURATED H$_2$S ON CORROSION BEHAVIOR OF 316L STAINLESS STEEL. J Chin Soc Corr Pro, 2010, 30(3): 246-250.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2010/V30/I3/246

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