Development of an oxidation resistant glass-ceramic composite coating on Ti-47Al-2Cr-2Nb alloy

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	Development of an oxidation resistant glass-ceramic composite coating on Ti-47Al-2Cr-2Nb alloy
	W. B. Li; S. L. Zhu; M. H. Chen; C. Wang; F. H. Wang
	2014
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	292 页码:583-590
摘要	Three glass-ceramic composite coatings were prepared on Ti-47Al-2Cr-2Nb alloy by air spraying technique and subsequent firing. The aim of this work is to study the reactions between glass matrix and inclusions and their effects on the oxidation resistance of the glass-ceramic composite coating. The powders of alumina, quartz, or both were added into the aqueous solution of potassium silicate (ASPS) to form slurries used as the starting materials for the composite coatings. The coating formed from an ASPS-alumina slurry was porous, because the reaction between alumina and potassium silicate glass resulted in the formation of leucite (KAlSi2O6), consuming substantive glass phase and hindering the densification of the composite coating. Cracks were observed in the coating prepared from an ASPS-quartz slurry due to the larger volume shrinkage of the coating than that of the alloy. In contrast, an intact and dense SiO2-Al2O3-glass coating was successfully prepared from an ASPS-alumina-silica slurry. The oxidation behavior of the SiO2-Al2O3-glass composite coating on Ti-47Al-2Cr-2Nb alloy was studied at 900 degrees C. The SiO2-Al2O3-glass composite coating acted as an oxygen diffusion barrier, and prevented the inward diffusion of the oxygen from the air to the coating/alloy interface, therefore, decreasing the oxidation rate of the Ti-47Al-2Cr-2Nb alloy significantly. (C) 2013 Elsevier B.V. All rights reserved.
部门归属	[li, wenbo ; zhu, shenglong ; chen, minghui ; wang, cheng ; wang, fuhui] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; zhu, sl (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china. ; slzhu@imr.ac.cn
关键词	Oxidation Glass-ceramic Coating Ti-47al-2cr-2nb Alloy Gamma-titanium Aluminide 316l Stainless-steel Tial-based Alloys Corrosion Behavior Enamel Particles Substrate Crystallization Microstructure Temperature
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72487
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. B. Li,S. L. Zhu,M. H. Chen,et al. Development of an oxidation resistant glass-ceramic composite coating on Ti-47Al-2Cr-2Nb alloy[J]. Applied Surface Science,2014,292:583-590.
APA	W. B. Li,S. L. Zhu,M. H. Chen,C. Wang,&F. H. Wang.(2014).Development of an oxidation resistant glass-ceramic composite coating on Ti-47Al-2Cr-2Nb alloy.Applied Surface Science,292,583-590.
MLA	W. B. Li,et al."Development of an oxidation resistant glass-ceramic composite coating on Ti-47Al-2Cr-2Nb alloy".Applied Surface Science 292(2014):583-590.