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
刊名	Journal of the European Ceramic Society
	2009
卷号	29 期号:4 页码:551-557
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
ISSN号	0955-2219
中文摘要	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.
原文出处	://WOS:000262573100002
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32316]
专题	金属研究所_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.