Electrochemical potential noise of 321 stainless steel stressed under constant strain rate testing conditions
文献类型：期刊论文
| 作者 | Z. M. Shi ; G. L. Song ; C. N. Cao ; H. C. Lin ; M. Lu |
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2007 |
| 卷号 | 52期号:5页码:2123-2133 |
| 关键词 | electrochemical noise (ECN) passivity stainless steel strain corrosion corrosion cracking stainless-steels fluctuations environments initiation 304-stainless-steel generation chloride alloy |
| ISSN号 | 0013-4686 |
| 中文摘要 | An investigation was carried out on the features of potential electrochemical potential noise of stressed AISI321 stainless steel in solution 0.5 mol/L Na2SO4 + 5 x 10(-3) mol/L H2SO4 under constant-strain-rate-testing (CSRT) conditions. The results showed that the strained steel exhibited a white noise feature at low frequencies and the amplitude of potential fluctuation depended on elongation of the steel. Power spectral density (PSD) of the noise increased with increasing strain level. The noise level in the elastic region of the steel was relatively low, which increased with elongation. After the steel yielded, the electrochemical noise level became higher but it increased less significantly with increasing strain. In the fracture region, the potential noise reached the maximum level. In addition to the dependence of electrochemical noise on strain level, it was also found that the electrochemical noise level increased with increasing strain rate. To interpret the generation mechanism of electrochemical noise, a simple model was proposed based on an assumption that strain results in breakdown and repairing of the passive film on the steel. With this model, the dependence of electrochemical potential noise and its power spectral density on strain level and strain rate can be successfully explained. (c) 2006 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33805]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Z. M. Shi,G. L. Song,C. N. Cao,et al. Electrochemical potential noise of 321 stainless steel stressed under constant strain rate testing conditions[J]. Electrochimica Acta,2007,52(5):2123-2133. |
| APA | Z. M. Shi,G. L. Song,C. N. Cao,H. C. Lin,&M. Lu.(2007).Electrochemical potential noise of 321 stainless steel stressed under constant strain rate testing conditions.Electrochimica Acta,52(5),2123-2133. |
| MLA | Z. M. Shi,et al."Electrochemical potential noise of 321 stainless steel stressed under constant strain rate testing conditions".Electrochimica Acta 52.5(2007):2123-2133. |
入库方式： OAI收割
来源：金属研究所
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