Oxidation of gamma-TiAl intermetallic coated with electrodeposited nickel-La2O3 composite films

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	Oxidation of gamma-TiAl intermetallic coated with electrodeposited nickel-La2O3 composite films
	X. Peng ; Z. Tang ; T. Li ; W. Wu
刊名	Oxidation of Metals
	1999
卷号	51 期号:3-4 页码:317-331
关键词	oxidation gamma-TiAl intermetallic electrodeposited Ni-La2O3 composite film behavior alloys
ISSN号	0030-770X
中文摘要	A coating of nickel with La2O3 particles was electrodeposited on the surface of gamma-TiAl to improve its high-temperature oxidation resistance. The experimental results showed that contrary to the oxidation of bare specimens, the electrodeposited Ni-La2O3 composite-coated ones exhibited much better resistance to both isothermal and cyclic oxidation in air at 1000 and 900 degrees C. For the oxidation of the Ni-La2O3 composite-coated gamma-TiAl EPMA/EDX microanalyses revealed that after the composite film had been thoroughly oxidized, a La2O3-rich NiO layer close to the gas-scale interface and two alumina-rich layers, with one beneath the NiO layer and the other adjacent to the gamma-TiAl matrix, were produced in the scale. The results indicated that the preferentially formed La2O3-doped NiO layer retarded the growth of rutile and favor ed the formation of two alumina-rich layers. The mechanism of the effect of the electrodeposited Ni-La2O3 composite on the oxidation behavior of gamma-TiAl is discussed in detail.
原文出处	://WOS:000079312100007
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/37472]
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	X. Peng,Z. Tang,T. Li,et al. Oxidation of gamma-TiAl intermetallic coated with electrodeposited nickel-La2O3 composite films[J]. Oxidation of Metals,1999,51(3-4):317-331.
APA	X. Peng,Z. Tang,T. Li,&W. Wu.(1999).Oxidation of gamma-TiAl intermetallic coated with electrodeposited nickel-La2O3 composite films.Oxidation of Metals,51(3-4),317-331.
MLA	X. Peng,et al."Oxidation of gamma-TiAl intermetallic coated with electrodeposited nickel-La2O3 composite films".Oxidation of Metals 51.3-4(1999):317-331.