The Electrochemical Characteristics of Cr30Mo2 Ultra Pure Ferritic Stainless Steel in NaCl Solutions at Different Temperatures

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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
发表期刊	International Journal of Electrochemical Science
ISSN	1452-3981
卷号	8 期号:1 页码:887-902
摘要	The 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.
部门归属	[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
关键词	Ferritic 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
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71575
专题	中国科学院金属研究所
推荐引用方式 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.