Fractographic study of adhesion tested thermal barrier coatings subjected to isothermal and cyclic heat treatments

被引：6
|
作者：
Eriksson, R. [1 ]
Brodin, H. [1 ,2 ]
Johansson, S. [1 ]
Ostergren, L. [3 ]
Li, X. -H. [2 ]
机构：
[1] Linkoping Univ, Div Engn Mat, SE-58183 Linkoping, Sweden
[2] Siemens Ind Turbomachinery AB, SE-61283 Finspang, Sweden
[3] Volvo Aero Corp, SE-46181 Trollhattan, Sweden
来源：
11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11) | 2011年 / 10卷
关键词：
thermal barrier coatings; TBC; adhesion; fractography; thermal cycling fatigue; burner rig test; BOND STRENGTH; MECHANISMS; TOUGHNESS; BEHAVIOR;
D O I：
10.1016/j.proeng.2011.04.035
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Thermal barrier coatings (TBC) are used in gas turbines to protect metallic components from high temperature. In the present study adhesion tests have been conducted on APS TBC coated specimens subjected to different heat treatments. Isothermal and cyclic heat treatments have been conducted at temperatures around 1100 C and the adhesion have been tested using the method described in ASTM C633. The fracture surfaces resulting from the adhesion test have been investigated and the fracture behavior has been characterized. A difference in fracture mechanism between the three heat treatments has been found. The two cyclic heat treatments give fracture in the top coat/bond coat interface while isothermal heat treatment gives fracture in the top coat. (C) 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11
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页数：6
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