Failure Behavior of Thermal Barrier Coatings on Cylindrical Superalloy Tube Under Thermomechanical Fatigue

查看全文 作　　者：Zhubing [1,2]CHEN;Zhongguang [2]WANG;Shijie [3]ZHU

机构地区：[1]Shenyang Aeroengine Research Institute,Aviation Industry Corporation of China;[2]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences;[3]Department of Intelligent Mechanical Engineering,Fukuoka Institute of Technology

出　　处：《Acta Metallurgica Sinica(English Letters)》索引2013年第26卷第4期,共5页

基　　金：financially supported by the Center for Interfacial Materials,Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences 摘　　要：Failure behavior of thermal barrier coatings on cylindrical superalloy tube was investigated under thermomechanical fatigue(TMF).Two types of TMF tests,i.e.in phase(IP) and out of phase(OP),were performed in the temperature range of 450-850℃.All tests were carried out under mechanical strain control at a given period of 300 s.The bond coat NiCrA1Y was produced by high velocity oxygen fuel(HVOF),and the top coat 7%Y2O3-ZrO2 was deposited by air plasma spraying(APS).The testing results showed that the OP TMF life was longer than the IP TMF one under the same mechanical strain amplitude.Observations of the fractured specimens revealed that the interface damage and cracking behavior in the two phasing conditions were different.In OP loading,the top coat was cracked and detached from the bond coat while no spallation was found in the IP loading. 关键词：热机械疲劳热障涂层合金管圆柱形破坏行为大气等离子喷涂高速氧燃料 TMF

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Failure Behavior of Thermal Barrier Coatings on Cylindrical Superalloy Tube Under Thermomechanical Fatigue

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