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The Electrochemical Characteristics of Cr30Mo2 Ultra Pure Ferritic Stainless Steel in NaCl Solutions at Different Temperatures
X. Wei; J. H. Dong; J. Tong; Z. Zheng; W. Ke
2013
Source PublicationInternational Journal of Electrochemical Science
ISSN1452-3981
Volume8Issue:1Pages:887-902
AbstractThe electrochemical characteristics of Cr30Mo2 ultra pure ferritic stainless steel in 0.01-2 M NaCl solutions at different temperatures (25-90 degrees C) had been investigated using different electrochemical techniques of potentiodynamic polarization, electrochemical impedance spectroscopy, capacitance measurements (Mott-Schottky approach) and potentiostatic polarization measurements. The results revealed that the pitting corrosion behavior of this stainless steel was found to be dependant on the temperature and chloride concentration of the solution. As the temperature and Cl-concentration were increased, the pitting potentials of the stainless steel shifted to negative direction, the impedances of passive films decreased and the donor densities (N-D) in oxide films calculated from the Mott-Schottky plots increased in the range of 1.6 - 7 x 10(21) cm(-3). Besides, the incubation time of pitting corrosion of Cr30Mo2 stainless steel shortened with the increase of temperature. Combining with micrographs of pits, it was recognized that the pitting corrosion resistance of Cr30Mo2 stainless steel declined in the concentrated NaCl solution at higher temperature.
description.department[wei, xin ; dong, junhua ; tong, jian ; zheng, zhi ; ke, wei] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [wei, xin] dalian univ technol, coll mat sci & engn, dalian 116024, peoples r china. ; wei, x (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; jhdong@imr.ac.cn
KeywordFerritic Stainless Steel Pitting Corrosion Passive Film Temperature Critical Pitting Temperature Corrosion-resistance Passive Films Chloride Concentration Fe-cr Behavior Media 304-stainless-steel Molybdenum Alloys
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71575
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
X. Wei,J. H. Dong,J. Tong,et al. The Electrochemical Characteristics of Cr30Mo2 Ultra Pure Ferritic Stainless Steel in NaCl Solutions at Different Temperatures[J]. International Journal of Electrochemical Science,2013,8(1):887-902.
APA X. Wei,J. H. Dong,J. Tong,Z. Zheng,&W. Ke.(2013).The Electrochemical Characteristics of Cr30Mo2 Ultra Pure Ferritic Stainless Steel in NaCl Solutions at Different Temperatures.International Journal of Electrochemical Science,8(1),887-902.
MLA X. Wei,et al."The Electrochemical Characteristics of Cr30Mo2 Ultra Pure Ferritic Stainless Steel in NaCl Solutions at Different Temperatures".International Journal of Electrochemical Science 8.1(2013):887-902.
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