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High temperature oxidation behavior of Ti(Al,Si)(3) diffusion coating on gamma-TiAl by cold spray
Wang, Ji-qiang; Kong, Ling-yan; Li, Tie-fan; Xiong, Tian-ying; Kong, LY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2016-04-01
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume26Issue:4Pages:1155-1162
AbstractA Ti(Al,Si)(3) diffusion coating was prepared on gamma-TiAl alloy by cold sprayed Al-20Si alloy coating, followed by a heat-treatment. The isothermal and cyclic oxidation tests were conducted at 900 degrees C for 1000 h and 120 cycles to check the oxidation resistance of the coating. The microstructure and phase transformation of the coating before and after the oxidation were studied by SEM, XRD and EPMA. The results indicate that the diffusion coating shows good oxidation resistance. The mass gain of the diffusion coating is only a quarter of that of bare alloy. After oxidation, the diffusion coating is degraded into three layers: an inner TiAl2 layer, a two-phase intermediate layer composed of a Ti(Al,Si)(3) matrix and Si-rich precipitates, and a porous layer because of the inter-diffusion between the coating and substrate.
description.department[wang, ji-qiang ; kong, ling-yan ; li, tie-fan ; xiong, tian-ying] chinese acad sci, inst met res, shenyang 110016, peoples r china
KeywordGamma-tial Alloy Ti(Al Cold Spray Si)(3) diffuSion Coating Heat-treatment High Temperature Oxidation
Subject AreaMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [50971127]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75917
Collection中国科学院金属研究所
Corresponding AuthorKong, LY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Wang, Ji-qiang,Kong, Ling-yan,Li, Tie-fan,et al. High temperature oxidation behavior of Ti(Al,Si)(3) diffusion coating on gamma-TiAl by cold spray[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2016,26(4):1155-1162.
APA Wang, Ji-qiang,Kong, Ling-yan,Li, Tie-fan,Xiong, Tian-ying,&Kong, LY .(2016).High temperature oxidation behavior of Ti(Al,Si)(3) diffusion coating on gamma-TiAl by cold spray.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,26(4),1155-1162.
MLA Wang, Ji-qiang,et al."High temperature oxidation behavior of Ti(Al,Si)(3) diffusion coating on gamma-TiAl by cold spray".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 26.4(2016):1155-1162.
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