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Oxidation and thermal fatigue of EB-PVD thermal barrier coatings on tube superalloy substrate GAO Yu, ZHANG Chun-xia, ZHOU Chun-gen, GONG Sheng-kai, XU Hui-bin Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China Received 20 April 2006; accepted 30 June 2006 Abstract: Two-layer structure thermal barrier coatings (TBCs......
Thermal conductivity of (Sm1-xLax)2Zr2O7 (x=0, 0.25, 0.5, 0.75 and 1) oxides for advanced thermal barrier coatings SUN Kun1,LIU Ling2,WANG Fuchi2,ZHANG Hongsong3,XU Qiang2 (1.Department of Physics...-plications as high temperature thermal barrier coatings because of their high melting points, high thermal expansion coefficients, and low thermal conductivities. In this study, oxides of Sm2Zr2O7......
Coupled Effects of Temperature Gradient and Oxidation on the Thermal Barrier Coating Failure Y.C.Zhou1,T.Hashida1 (1.Fracture Research Institute, Tohoku University, Sendai, Japan;2.Institute... as the cooling rate are considered. The delamination cracking in thermal barrier coating system with ceramic coating deposited on a substrate is analytical studied. Due to the complication of TBCs......
techniques, failure mechanisms, life prediction as well as the future development of TBC. Key words:ZrO2 ceramic; nano-structured coating; thermal barrier coating; thermal spray; failure mechanism ...] Chena W R, Wu X, Marpleb B R. Oxidation and crack nucleation growth in an air-plasma-sprayed thermal barrier coating with NiCrAlY bond [J]. Surface and Coatings Technology, 2005, 197: 109-115. [40......
ZrO2热障涂层残余应力分析 孔德军1,邹世坤2,张永康3,朱伟1 (1.江苏工业学院机械工程系,江苏,常州,213016;2.北京航空制造工程研究所,北京,100024;3.江苏大学机械工程学院,江苏,镇江,212013) 摘要:用扫描电子显微镜(SEM)观察了等离子喷涂ZrO2涂层的显微结构,并用X射线衍射法(XRD)测试了ZrO2涂层相的组成和残余应力.同时测试了激光冲击处理和激光热处理后的ZrO2涂层残余应力分布,分析了热障涂层残余应力形成机理.结果表明,等离子喷涂ZrO2涂层表面残余应力均为拉应力,其均值为179.2MPa,经激光表面处理后的ZrO2涂层残余应力均表现为压应力;热应力对涂层残余应力贡献最大,当热应力超过涂层结合强度时,涂层脱落,通过控制涂层残余应力可以提高涂层界面结合强度. 关键词:ZrO2涂层; X衍射法(XRD); 残余应力; 激光冲击处理; 激光热......
Trans. Nonferrous Met. Soc. China 25(2015) 457-464 Thermal properties of glass-ceramic bonded thermal barrier coating system S. GHOSH Bio-ceramics and Coating Division, CSIR–Central Glass and Ceramic Research Institute, Kolkata 700032, India Received 26 March 2014; accepted 18 August 2014 Abstract: The thermal properties of a thermal barrier coating (TBC) system comprised of BaO–MgO–SiO2 based......
Effect of Y2O3 stabilized ZrO2 coating with tri-model structure on bi-layered thermally grown oxide evolution in nano thermal barrier coating systems at elevated temperaturesMohammadreza...) layer plays a major role in the spallation of Y2 O3 stabilized ZrO2(YSZ) layer form the bond coat in the thermal barrier coating(TBC) systems during oxidation. On the other hand, bi-layered TGO......
Effect of Y2O3 stabilized ZrO2 coating with tri-model structure on bi-layered thermally grown oxide evolution in nano thermal barrier coating systems at elevated temperaturesMohammadreza...) layer plays a major role in the spallation of Y2 O3 stabilized ZrO2(YSZ) layer form the bond coat in the thermal barrier coating(TBC) systems during oxidation. On the other hand, bi-layered TGO......
. Key words: nanocrystalline material; zirconia; thermal barrier coating; heat treatment; phase composition 1 Introduction Hundreds of different types of coatings are used to protect a variety.... [6] WANG Zhen-bo, ZHOU Chun-gen, XU Hui-bin, GONG Sheng-kai. Effect of thermal treatment on the grain growth of nanostructured YSZ thermal barrier coating prepared by air plasma spraying [J]. Chinese......
