Characterization of stress corrosion crack growth of 304 stainless steel by electrochemical noise and scanning Kelvin probe

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	Characterization of stress corrosion crack growth of 304 stainless steel by electrochemical noise and scanning Kelvin probe
	R. Zhao; Z. Zhang; J. B. Shi; L. Tao; S. Z. Song
	2010
发表期刊	Journal of Central South University of Technology
ISSN	1005-9784
卷号	17 期号:1 页码:13-18
摘要	The fatigue pre-cracking 304 stainless steel (SS) specimens with lengths of 1.002 mm (L-crack) and 0.575 mm (S-crack) were prepared. Their corrosion behavior was studied by electrochemical noise (EN) in 4 mol/L NaCl + 0.01 mol/L Na(2)S(2)O(3) solution under slow-strain-rate-testing (SSRT) conditions. Moreover, the characteristics of L-crack's surface morphology and potential distribution with scanning Kelvin probe (SKP) before and after SSRT were also discussed. Compared with S-crack, L-crack is propagated and the features of crack propagation can be obtained. After propagation, the noise amplitudes increase with increasing stress and accelerating corrosion, the white noises at low and high frequencies (WL and WH) of the later stage are one order of magnitude larger than that at early stage in the current power spectral densities (PSDs). The potential PSDs also increase, but WH disappears. In addition, the crack propagation can be demonstrated according to variation of probability distribution, surface morphology and potential distribution.
部门归属	[zhao ru; shi jiang-bo; tao lei; song shi-zhe] tianjin univ, sch mat sci & engn, tianjin 300072, peoples r china. [zhang zheng] state ocean adm tianjin, inst seawater desalinat & multipurpose utilizat, tianjin 300192, peoples r china. [song shi-zhe] state key lab corros & protect met, shenyang 110016, peoples r china.;song, sz (reprint author), tianjin univ, sch mat sci & engn, tianjin 300072, peoples r china;szsong@tju.edu.cn
关键词	304 Stainless Steel Fatigue Pre-cracking Electrochemical Noise Stress Corrosion Cracking (Scc) Scanning Kelvin Probe Stainless-steel High-temperature Alloy
URL	查看原文
WOS记录号	WOS:000274457100003
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31749
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. Zhao,Z. Zhang,J. B. Shi,et al. Characterization of stress corrosion crack growth of 304 stainless steel by electrochemical noise and scanning Kelvin probe[J]. Journal of Central South University of Technology,2010,17(1):13-18.
APA	R. Zhao,Z. Zhang,J. B. Shi,L. Tao,&S. Z. Song.(2010).Characterization of stress corrosion crack growth of 304 stainless steel by electrochemical noise and scanning Kelvin probe.Journal of Central South University of Technology,17(1),13-18.
MLA	R. Zhao,et al."Characterization of stress corrosion crack growth of 304 stainless steel by electrochemical noise and scanning Kelvin probe".Journal of Central South University of Technology 17.1(2010):13-18.