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
	1997
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	48 期号:5-6 页码:511-525
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.
部门归属	acad sinica, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china.;tang, zl (reprint author), acad sinica, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china
关键词	Tial Intermetallic Compound Isothermal/cyclic Oxidation Tialcr Coating Mcraly Coating Interdiffusion High-temperature Oxidation Gamma-titanium Aluminides Alloys Behavior Film
URL	查看原文
WOS记录号	WOS:000071615800008
引用统计	被引频次：80[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38114
专题	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.