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High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray
Alternative TitleHigh temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray
Wang Jiqiang; Kong Lingyan; Li Tiefan; Xiong Tianying
2016
Source PublicationTransactions of Nonferrous Metals Society of China
ISSN1003-6326
Volume26Issue:4Pages:1155-1162
AbstractA Ti(Al,Si)_3 diffusion coating was prepared on γ-TiAl alloy by cold sprayed Al-20Si alloy coating, followed by a heat-treatment. The isothermal and cyclic oxidation tests were conducted at 900 °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 TiAl_2 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.
Other AbstractA Ti(Al,Si)_3 diffusion coating was prepared on γ-TiAl alloy by cold sprayed Al-20Si alloy coating, followed by a heat-treatment. The isothermal and cyclic oxidation tests were conducted at 900 °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 TiAl_2 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.
KeywordSi)_3扩散涂层 γ-TiAl合金 冷喷涂 热处理 高温氧化
Indexed ByCSCD
Language英语
CSCD IDCSCD:5702950
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/153887
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Wang Jiqiang,Kong Lingyan,Li Tiefan,et al. High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray[J]. Transactions of Nonferrous Metals Society of China,2016,26(4):1155-1162.
APA Wang Jiqiang,Kong Lingyan,Li Tiefan,&Xiong Tianying.(2016).High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray.Transactions of Nonferrous Metals Society of China,26(4),1155-1162.
MLA Wang Jiqiang,et al."High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray".Transactions of Nonferrous Metals Society of China 26.4(2016):1155-1162.
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