Oxidation Behavior of Thermal Barrier Coatings with a TiAl3 Bond Coat on gamma-TiAl Alloy

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	Oxidation Behavior of Thermal Barrier Coatings with a TiAl3 Bond Coat on gamma-TiAl Alloy
	J. Q.; Kong Wang, L. Y.; Li, T. F.; Xiong, T. Y.
	2015
发表期刊	Journal of Thermal Spray Technology
ISSN	1059-9630
卷号	24 期号:3 页码:467-475
摘要	The thermal barrier coatings investigated in this paper included a TiAl3 bond coat and a yttria partially stabilized zirconia (YSZ) layer. The TiAl3 bond coat was prepared by deposition of aluminum by cold spray, followed by a heat-treatment. The YSZ layer was prepared by air plasma spray. The isothermal and cyclic oxidation tests were conducted at 900 degrees C for 1000 h and 500 cycles to test the oxidation resistance of the thermal barrier coatings. The microstructure and composition of the gamma-TiAl alloy with and without the thermal barrier coatings after oxidation were investigated. The results showed that a dense TGO layer about 5 mu m had grown between the YSZ layer and the TiAl3 bond coat. The TGO had good adhesion to both the YSZ layer and the bond coat even after the TiAl3 bond coat entirely degraded into the TiAl2 phase, which decreased the inward oxygen diffusion. Thus, the thermal barrier coatings improved the oxidation resistance of gamma-TiAl alloy effectively.
部门归属	[wang, jiqiang ; kong, lingyan ; li, tiefan ; xiong, tianying] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; kong, ly (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; lykong@imr.ac.cn
关键词	Air Plasma Spray Cold Spray High Temperature Oxidation Thermal Barrier Coatings Tial3 Coating Gamma-tial Alloy High-temperature Oxidation Aluminide Coatings Failure Mechanisms Grown Oxide Al Resistance Interdiffusion Deposition Spray Improvement
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73952
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Q.,Kong Wang, L. Y.,Li, T. F.,et al. Oxidation Behavior of Thermal Barrier Coatings with a TiAl3 Bond Coat on gamma-TiAl Alloy[J]. Journal of Thermal Spray Technology,2015,24(3):467-475.
APA	J. Q.,Kong Wang, L. Y.,Li, T. F.,&Xiong, T. Y..(2015).Oxidation Behavior of Thermal Barrier Coatings with a TiAl3 Bond Coat on gamma-TiAl Alloy.Journal of Thermal Spray Technology,24(3),467-475.
MLA	J. Q.,et al."Oxidation Behavior of Thermal Barrier Coatings with a TiAl3 Bond Coat on gamma-TiAl Alloy".Journal of Thermal Spray Technology 24.3(2015):467-475.