Effect of a sputtered TiAlCr coating on the oxidation resistance of TiAl intermetallic compound

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	Effect of a sputtered TiAlCr coating on the oxidation resistance of TiAl intermetallic compound
	Z. L. Tang ; F. H. Wang ; W. T. Wu
刊名	Oxidation of Metals
	1997
卷号	48 期号:5-6 页码:511-525
关键词	TiAl intermetallic compound isothermal/cyclic oxidation TiAlCr coating MCrAlY coating interdiffusion high-temperature oxidation gamma-titanium aluminides alloys behavior film
ISSN号	0030-770X
中文摘要	The effect of a sputtered TiAlCr coating on the oxidation resistance of TiAl intel metallic compound was investigated in static air. The bare TiAl alloy exhibited pool isothermal and cyclic-oxidation resistance at 800-1000 degrees C due to the formation of TiO2-base scales which tend to spall during cooling. A sputtered Ti-50Al-10Cr coating remarkable improved the oxidation resistance of TiAl, due to the formation of an adherent Al2O3 scale at 800-1000 degrees C. After long-term oxidation (at 900 degrees C for 1000 hr), TiAlCr coating still provided excellent protection for the TiAl alloy. Minor interdiffusion occur red due to the inward diffusion of Cr, while no Kirkendall voids were found at the coating/substrate interface. In contrast, NiCrAlY and CoCrAlY coatings reacted extensively with the TiAl alloys. Moreover, the TiAlCr coating alloy is based on gamma-TiAl and TiAlCr Laves phases, which may offer improved mechanical properties. The TiAlCr coating exhibited a better combination of oxidation resistance and substrate compatibility than conventional aluminide and MCrAlY coatings.
原文出处	://WOS:000071615800008
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/38114]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. L. Tang,F. H. Wang,W. T. Wu. Effect of a sputtered TiAlCr coating on the oxidation resistance of TiAl intermetallic compound[J]. Oxidation of Metals,1997,48(5-6):511-525.
APA	Z. L. Tang,F. H. Wang,&W. T. Wu.(1997).Effect of a sputtered TiAlCr coating on the oxidation resistance of TiAl intermetallic compound.Oxidation of Metals,48(5-6),511-525.
MLA	Z. L. Tang,et al."Effect of a sputtered TiAlCr coating on the oxidation resistance of TiAl intermetallic compound".Oxidation of Metals 48.5-6(1997):511-525.