Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.9Al0.1C2 solid solution

doi:10.1016/j.actamat.2004.04.015

IMR OpenIR

	Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.9Al0.1C2 solid solution
	Zhang, HB; Zhou, YC; Bao, YW; Li, MS
通讯作者	Zhou, YC()
	2004-07-12
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	52 期号:12 页码:3631-3637
摘要	The oxidation behavior of the Ti3Si0.9Al0.1C2 solid solution in air was investigated at 1000-1350 degreesC. The parabolic rate constants of Ti3Si0.9Al0.1C2 were decreased by 2-4 orders of magnitude compared with those of Ti3SiC2 at 1000-1300 degreesC. At 1000-1100 degreesC, the oxide scales displayed a continuous alpha-Al-2-O-3 inner layer and a discontinuous TiO2 (rutile) outer layer. At 1200-1300 degreesC, the continuous inner layer was still alpha-Al2O3, but the outer layer was a mixture of TiO2 (rutile) and Al2TiO5. The oxide layers were dense, adherent and resistant to thermal cycling. However, the oxidation resistance of Ti3Si0.9Al0.1C2 deteriorated at 1350 degreesC because of the depletion of alpha-Al2O3. This depletion was caused by the extensive reaction between TiO2 (rutile) and alpha-Al2O3 to form Al2TiO5. The high activity and diffusion of Al and the low solubility of oxygen in the solid solution were the key factors for the formation of a continuous alpha-Al2O3 layer during high-temperature oxidation. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词	ceramics oxidation layered structures activity solid solution
DOI	10.1016/j.actamat.2004.04.015
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000222707800023
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81892
通讯作者	Zhou, YC
作者单位	Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, HB,Zhou, YC,Bao, YW,et al. Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.9Al0.1C2 solid solution[J]. ACTA MATERIALIA,2004,52(12):3631-3637.
APA	Zhang, HB,Zhou, YC,Bao, YW,&Li, MS.(2004).Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.9Al0.1C2 solid solution.ACTA MATERIALIA,52(12),3631-3637.
MLA	Zhang, HB,et al."Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.9Al0.1C2 solid solution".ACTA MATERIALIA 52.12(2004):3631-3637.