The electrochemical behaviour of 316L austenitic stainless steel in Cl- containing environment under different H2S partial pressures

被引：92

作者：

Ding, Jinhui ^{[1
]}

Zhang, Lei ^{[1
]}

Lu, Minxu ^{[1
]}

Wang, Jing ^{[1
]}

Wen, Zhibin ^{[1
]}

Hao, Wenhui ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2014年 / 289卷

基金：

中国国家自然科学基金;

关键词：

Passive film; H2S-C1(-); Electrochemical impedance spectroscopy (EIS); Mott Schottky; X-ray photoelectron spectroscopy (XPS); STRESS-CORROSION CRACKING; PASSIVE FILMS; HYDROGEN-SULFIDE; ACID-SOLUTIONS; WATER; IRON; PH; SOLUBILITY; STABILITY; IMPEDANCE;

D O I：

10.1016/j.apsusc.2013.10.080

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In oil-gas production environments, presence of H2S-C1(-) can induce deterioration of the passive film, leading to pitting corrosion of stainless steels. In this paper, by using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and capacitance measurements (Mott-Schottky analysis), the electrochemical behaviour of AISI 316L austenitic stainless steel was investigated in Cl- solutions under different H2S partial pressures (from 0 to 1.0 bar). The results indicated that presence of H2S in Cl- solution can accelerate both the cathodic and anodic current density, leading to a metastable passive state in higher passive potential range, changing the semiconductor behaviour from p-type to n-type, increasing its susceptibility to corrosion. XPS analysis was employed to characterize the surface film after potentiostatic polarization, whose results provide good evidences for the electrochemical measurements. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：33 / 41

页数：9

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