Amorphous sol-gel SiO2 film for protection of Ti6Al4V alloy against high temperature oxidation

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	Amorphous sol-gel SiO2 film for protection of Ti6Al4V alloy against high temperature oxidation
	C. Z. Yu ; S. L. Zhu ; D. Z. Wei ; F. H. Wang
刊名	Surface & Coatings Technology
	2007
卷号	201 期号:12 页码:5967-5972
关键词	SiO2 thin film sol-gel processing Ti6Al4V alloy high-temperature oxidation tial intermetallic compound pressure oxygen atmosphere 316l stainless-steel heat-treatment ti-6al-4v alloy ti60 alloy resistance coatings behavior titanium
ISSN号	0257-8972
中文摘要	Amorphous SiO2 thin films were deposited on Ti6Al4V alloy by sol-gel processing. Isothermal and cyclic oxidation tests of the coated and uncoated specimens were performed at 700 and 800 degrees C. The SiO2 film exhibited beneficial effects on the oxidation resistance of the alloy. Titania scales formed on the uncoated specimens, and severe spallation and stratification of the scales were observed. The oxidation rates of the silica coated specimens were decreased significantly. The silica film shrunk to about a quarter in thickness, probably by mechanism of crystallization of silica and evaporation of the organic additments. The oxide scales formed on the coated specimens were multilayered. Beneath the silica film, formation of a thick rutile titania layer followed by a thin alumina layer occurred. Above the silica film, alumina plus minor titania layer formed. It is deduced therefore that the growth of the multilayered and mixed oxide scales was dominated by both outward diffusion of metal and inward diffusion of oxygen. (c) 2006 Elsevier B.V. All rights reserved.
原文出处	://WOS:000244578100033
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/34003]
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	C. Z. Yu,S. L. Zhu,D. Z. Wei,et al. Amorphous sol-gel SiO2 film for protection of Ti6Al4V alloy against high temperature oxidation[J]. Surface & Coatings Technology,2007,201(12):5967-5972.
APA	C. Z. Yu,S. L. Zhu,D. Z. Wei,&F. H. Wang.(2007).Amorphous sol-gel SiO2 film for protection of Ti6Al4V alloy against high temperature oxidation.Surface & Coatings Technology,201(12),5967-5972.
MLA	C. Z. Yu,et al."Amorphous sol-gel SiO2 film for protection of Ti6Al4V alloy against high temperature oxidation".Surface & Coatings Technology 201.12(2007):5967-5972.