Effect of ion plating TiN on the oxidation of sputtered NiCrAlY-coated Ti3Al-Nb in air at 850-950 degrees C

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	Effect of ion plating TiN on the oxidation of sputtered NiCrAlY-coated Ti3Al-Nb in air at 850-950 degrees C
	F. C. Rizzo; C. L. Zeng; W. T. Wu
	1998
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	50 期号:1-2 页码:71-88
摘要	A single sputtered NiCrAlY coating and a complex coating of inner ion-plated TiN and outer sputtered NiCrAlY were prepared on the intermetallic compound Ti3Al-Nb. Their oxidation behavior was examined at 850, 900, and 950 degrees C in air by thermal gravimetry combined with XRD, SEM, and EDAX. The results showed that Ti3Al-Nb followed approximately parabolic oxidation, forming an outer thin Al2O3-rich scale and an inner TiO2-rich layer doped with Nb at the three temperatures. The TiO2-rich layer doped with Nb dominated the oxidation reaction. The single NiCrAlY coating did not follow parabolic oxidation exactly at 850 and 950 degrees C, but oxidized approximately in a parabolic manner, because the instantaneous parabolic constants changed slightly with time. Besides the Al2O3 scale, TiO2 formed from the coating surface at the coating-substrate interface. The deterioration of the coating accelerated with increasing temperature. The NiCrAlY-TiN coating showed two-stage parabolic oxidation at 850 and 900 degrees C, and an approximate parabolic oxidation at 950 degrees C, The TiN layer was effective as a barrier to inhibit coating-alloy interdiffusion.
部门归属	pontificia univ catolica rio de janeiro, dept ciencia mat & met, br-38008 rio de janeiro, brazil. chinese acad sci, inst corris & protect met, state key lab corros & protect, shenyang 110015, peoples r china.;rizzo, fc (reprint author), pontificia univ catolica rio de janeiro, dept ciencia mat & met, br-38008 rio de janeiro, brazil
关键词	Oxidation Ti3al-nb Coatings Sputtered Nicraly Ion-plated Tin High-temperature-oxidation Alloys
URL	查看原文
WOS记录号	WOS:000075336400004
引用统计	被引频次：5[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/321006/37760
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. C. Rizzo,C. L. Zeng,W. T. Wu. Effect of ion plating TiN on the oxidation of sputtered NiCrAlY-coated Ti3Al-Nb in air at 850-950 degrees C[J]. Oxidation of Metals,1998,50(1-2):71-88.
APA	F. C. Rizzo,C. L. Zeng,&W. T. Wu.(1998).Effect of ion plating TiN on the oxidation of sputtered NiCrAlY-coated Ti3Al-Nb in air at 850-950 degrees C.Oxidation of Metals,50(1-2),71-88.
MLA	F. C. Rizzo,et al."Effect of ion plating TiN on the oxidation of sputtered NiCrAlY-coated Ti3Al-Nb in air at 850-950 degrees C".Oxidation of Metals 50.1-2(1998):71-88.