Ti and Cr nitride coating/steel adherence assessed by acoustic emission wavelet analysis

被引：48

作者：

Piotrkowski, R

Gallego, A ^{[1
]}

Castro, E

García-Hernandez, MT

Ruzzante, JE

机构：

[1] Univ Granada, EU Arquitectura Tecn, E-18071 Granada, Spain

[2] Univ Nacl Gen San Martn, EC&T, RA-1653 Buenos Aires, DF, Argentina

[3] Univ Jaen, Dept Fis, Excuela Politecn Super, Jaen 23071, Spain

[4] Comis Nacl Energia Atom, ENDE, RA-1650 Buenos Aires, DF, Argentina

来源：

NDT & E INTERNATIONAL | 2005年 / 38卷 / 04期

关键词：

nitride coatings; acoustic emission; scratch test; wavelet analysis; microfractures;

D O I：

10.1016/j.ndteint.2004.09.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Wavelet Transform (WT) was applied to Acoustic Emission (AE) signals from scratch tests on stainless steel samples with Cr or Ti nitride coatings obtained by physical vapor deposition, in order to characterize the coating adherence failure mechanisms. The WT, employed to analize the essentially non-stationary AE signals, was adequate to identify different stages of failure (transversal coating microfractures and coating/matrix debonding microfractures), which could be precisely delimited by a unique parameter. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：260 / 267

页数：8

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