Acoustic emission evaluation of the fracture behavior of APS-TBCs subjecting to bondcoating oxidation

被引：22
作者：
Yang, L.
Zhou, Y. C. [1 ]
Mao, W. G.
Liu, Q. X.
机构：
[1] Xiangtan Univ, Fac Mat & Optoelect Phys, Hunan 411105, Peoples R China
[2] Xiangtan Univ, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Hunan 411105, Peoples R China
来源：
SURFACE AND INTERFACE ANALYSIS | 2007年 / 39卷 / 09期
关键词：
air-plasma-sprayed thermal barrier coatings; tensile tests; acoustic emission; bondcoating oxidation;
D O I：
10.1002/sia.2586
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Air-plasma-sprayed (APS) thermal barrier coatings (TBCs) under the conditions of without TBC, assprayed and preoxidized, were tested under tensile loading, and their acoustic emission (AE) responses were monitored. AE parameters including event count, amplitude, and frequency spectrum realized by Fast Fourier Transformation (FFT) were analyzed for information regarding the fracture behavior of TBCs. On the basis of AE behavior, the fracture process of TBCs and corresponding cracking patterns in TBCs subjected to tensile tests were evaluated. AE results also showed that the bondcoating oxidation not only promotes the cracking but also changes the failure mode in TBCs. Copyright (c) 2007 John Wiley & Sons, Ltd.
引用
收藏
页码：761 / 769
页数：9
相关论文
共 19 条
[1]   The influence of oxidation on mechanical and fracture behaviour of an air plasma-sprayed NiCoCrAlY bondcoat [J].
Brodin, H ;
Eskner, M .
SURFACE & COATINGS TECHNOLOGY, 2004, 187 (01) :113-121
[2]   Non-destructive evaluation of plasma sprayed functionally graded thermal barrier coatings [J].
Fu, L ;
Khor, KA ;
Ng, HW ;
Teo, TN .
SURFACE & COATINGS TECHNOLOGY, 2000, 130 (2-3) :233-239
[3]   Mechanisms of spallation of solution precursor plasma spray thermal barrier coatings [J].
Gell, M ;
Xie, LD ;
Jordan, EH ;
Padture, NP .
SURFACE & COATINGS TECHNOLOGY, 2004, 188 :101-106
[4]   Capacitive pressure sensor with monolithically integrated CMOS readout circuit for high temperature applications [J].
Kasten, K ;
Kordas, N ;
Kappert, H ;
Mokwa, W .
SENSORS AND ACTUATORS A-PHYSICAL, 2002, 97-8 :83-87
[5]   Influence of plasma spray parameters on mechanical properties of yttria stabilized zirconia coatings. II: Acoustic emission response [J].
Kucuk, A ;
Berndt, CC ;
Senturk, U ;
Lima, RS .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 284 (1-2) :41-50
[6]   Quantitative acoustic emission analysis of plasma sprayed thermal barrier coatings subjected to thermal shock tests [J].
Ma, XQ ;
Takemoto, M .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 308 (1-2) :101-110
[7]   Acoustic emission source analysis of plasma sprayed thermal barrier coatings during four-point bend tests [J].
Ma, XQ ;
Cho, S ;
Takemoto, M .
SURFACE & COATINGS TECHNOLOGY, 2001, 139 (01) :55-62
[8]   CURRENT STATUS OF THERMAL BARRIER COATINGS - AN OVERVIEW [J].
MILLER, RA .
SURFACE & COATINGS TECHNOLOGY, 1987, 30 (01) :1-11
[9]   FAILURE MECHANISMS OF THERMAL BARRIER COATINGS EXPOSED TO ELEVATED-TEMPERATURES [J].
MILLER, RA ;
LOWELL, CE .
THIN SOLID FILMS, 1982, 95 (03) :265-273
[10]   Growth of interfacial cracks in a TBC/superalloy system due to oxide volume induced internal pressure and thermal loading [J].
Nusier, SQ ;
Newaz, GM .
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2000, 37 (15) :2151-2166
12