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
	2007
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	201 期号:12 页码:5967-5972
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.
部门归属	chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china. northeastern univ, sch resource, shenyang 110004, peoples r china. northeastern univ, civil engn coll, shenyang 110004, peoples r china.;zhu, sl (reprint author), chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china;slzhu@imr.ac.cn
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
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WOS记录号	WOS:000244578100033
引用统计	被引频次：46[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/321006/34003
专题	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.