Thermal properties of single-phase Y(2)SiO(5)

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	Thermal properties of single-phase Y(2)SiO(5)
	Z. Q. Sun; M. S. Li; Y. C. Zhou
	2009
发表期刊	Journal of the European Ceramic Society
ISSN	0955-2219
卷号	29 期号:4 页码:551-557
摘要	Y(2)SiO(5) is a promising candidate for oxidation-resistant or environmental/thermal barrier coatings (ETBC) due to its excellent high-temperature stability, low elastic modulus and low oxygen permeability. In this paper, we investigated the thermal properties Of Y2SiO5 comprehensively, including thermal expansion, thermal diffusivity, heat capacity and thermal conductivity. It is interesting that Y(2)SiO(5) has a very low thermal conductivity (similar to 1.40 W/m K) but a relatively high linear thermal expansion coefficient ((8.36 +/- 0.5) x 10(-6) K(-1)), suggesting compatible thermal and mechanical properties to some non-oxide ceramics and nickel superalloys as ETBC layer. Y(2)SiO(5) is also an ideal EBC on YSZ TBC layer due to their close thermal expansion coefficients. As a continuous source of Y(3+), it is predicted that Y(2)SiO(5) EBC may prolong the lifetime of zirconia-based TBC by stopping the degradation aroused by the loss of Y stabilizer. (C) 2008 Elsevier Ltd. All rights reserved.
部门归属	[zhou, yanchun] chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china. [sun, ziqi] chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, yc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, 72 wenhua rd, shenyang 110016, peoples r china;yczhou@imr.ac.cn
关键词	y(2)Sio(5) Thermal Properties Silicate Thermal Conductivity Engine Components Yttrium Silicate Barrier Coatings Si3n4 Ceramics Temperature Expansion Nitride Si3n4-sio2-y2o3 Conductivity Corrosion System
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32316
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Sun,M. S. Li,Y. C. Zhou. Thermal properties of single-phase Y(2)SiO(5)[J]. Journal of the European Ceramic Society,2009,29(4):551-557.
APA	Z. Q. Sun,M. S. Li,&Y. C. Zhou.(2009).Thermal properties of single-phase Y(2)SiO(5).Journal of the European Ceramic Society,29(4),551-557.
MLA	Z. Q. Sun,et al."Thermal properties of single-phase Y(2)SiO(5)".Journal of the European Ceramic Society 29.4(2009):551-557.