In situ hot pressing/reaction synthesis, mechanical and thermal properties of Lu2SiO5

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	In situ hot pressing/reaction synthesis, mechanical and thermal properties of Lu2SiO5
	Z. L. Tian; L. C. Sun; L. Y. Zheng; J. Y. Wang; J. N. Li; Z. J. Hu
	2014
发表期刊	Journal of the European Ceramic Society
ISSN	0955-2219
卷号	34 期号:16 页码:4403-4409
摘要	Lu2SiO5 is a promising candidate of environmental barrier coatings (EBC) for silicon based ceramics due to its excellent high temperature stability. However, little information is available for the mechanical and thermal properties of Lu2SiO5, which frustrated evaluation of its performances for EBC applications. In this paper, dense Lu2SiO5 ceramic is successfully fabricated from Lu2O3 and SiO2 powders by in situ hot pressing/reaction sintering at 1500 degrees C. Mechanical properties, including Young's modulus, bulk modulus, shear modulus, Poisson's ratio, fracture toughness, Vickers hardness, and bending strength are reported for the first time. Lu2SiO5 possesses excellent high temperature mechanical properties up to at least 1300 degrees C. Thermal stress for the case of Lu2SiO5 or Y2SiO5 coating on silicon bond coat and thermal stress resistance parameter are also estimated based on the experimental mechanical and thermal properties. The present results suggest that Lu2SiO5 has better reliability than Y2SiO5 in harsh thermal environment. (C) 2014 Elsevier Ltd. All rights reserved.
部门归属	[tian, zhilin ; sun, luchao ; zheng, liya ; wang, jingyang] chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china. [li, junning ; hu, zijun] res inst mat & proc technol, sci & technol adv funct composite lab, beijing 100076, peoples r china. ; wang, jy (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china. ; jywang@imr.ac.cn
关键词	Rare-earth Silicate Processing Mechanical Property Thermal Property Ebc Silicon-nitride Ceramics Ductile Transition Brittle
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/321006/73393
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. L. Tian,L. C. Sun,L. Y. Zheng,et al. In situ hot pressing/reaction synthesis, mechanical and thermal properties of Lu2SiO5[J]. Journal of the European Ceramic Society,2014,34(16):4403-4409.
APA	Z. L. Tian,L. C. Sun,L. Y. Zheng,J. Y. Wang,J. N. Li,&Z. J. Hu.(2014).In situ hot pressing/reaction synthesis, mechanical and thermal properties of Lu2SiO5.Journal of the European Ceramic Society,34(16),4403-4409.
MLA	Z. L. Tian,et al."In situ hot pressing/reaction synthesis, mechanical and thermal properties of Lu2SiO5".Journal of the European Ceramic Society 34.16(2014):4403-4409.