航天器环境工程Issue(4)：401-408,8.DOI:10.3969/j.issn.1673-1379.2014.04.011
基于声发射技术的不锈钢应力腐蚀过程研究
Study of stress corrosion process of stainless steel based on acoustic emission method
摘要
Abstract
In this paper, the corrosion process of the 304 stainless steel in the acidic NaCl solution is studied by using the electrochemical noise(EN) and acoustic emission(AE) techniques. The AE signals in the corrosion process are clustered based on the K-Means clustering algorithm, and the AE signal characteristics are analyzed through the wavelet packet. It is shown that the stress corrosion cracking(SCC) occurs easily in the experimental system, and the corrosion forms are developed gradually from the localized corrosion to the general corrosion. The AE signal characteristics of the pitting corrosion, the crack and the bubble break-up are quite different during the corrosion process. The AE test results are found to be consistent with the EN test results.关键词
声发射/聚类分析/应力腐蚀开裂/慢应变速率拉伸Key words
acoustic emission/cluster analysis/stress corrosion cracking/slow strain rate tensing(SSRT)分类
矿业与冶金引用本文复制引用
杜刚..基于声发射技术的不锈钢应力腐蚀过程研究[J].航天器环境工程,2014,(4):401-408,8.基金项目
国家重点基础研究发展计划（973计划）项目 （）
