Detection of Acoustic Signal Emitted during Corrosion of 304 Stainless Steel

被引：1

作者：

Wu, Kaige ^{[1
]}

Choe, Chan-Yang ^{[1
]}

Byeon, Jai-Won ^{[1
]}

机构：

[1] Seoul Natl Univ Sci & Technol, Dept Mat Sci & Engn, Seoul 139743, South Korea

来源：

JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING | 2013年 / 33卷 / 05期

关键词：

Acoustic Emission; Corrosion; Stainless Steel; Pitting Corrosion; Material Damage;

D O I：

10.7779/JKSNT.2013.33.5.409

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, corrosion of 304 stainless steel was evaluated by using acoustic emission(AE) technique. AE measurement system was set for detecting acoustic signal during accelerated corrosion test of the specimen. AE signal started to be detected after the time of pitting corrosion initiation was evaluated by anodic polarization curve. Pitting corrosion damage was confirmed by optical microscopic observation of the surface morphology. AE cumulative counts and amplitude according to corrosion time could be divided into three stages. These trends were discussed in relation with changing pitting corrosion mechanism. Feasibilities of AE technique for evaluation of corrosion damage and mechanism were suggested.

引用

页码：409 / 414

页数：6