Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies

IMR OpenIR

	Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies
	Sun, Luchao; Tian, Zhilin; Wang, Jingyang; jywang@imr.ac.cn
	2015
发表期刊	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
卷号	35 期号:12 页码:3237-3247
摘要	Thermal conductivity of bulk and dense oxynitride Lu4Si2O7N2 was measured at various temperatures. Results show that Lu4Si2O7N2 possesses low thermal conductivity and has potential applications as thermal insulation material. Detailed analysis shows that the experimental thermal diffusivity is significantly influenced by defects at low temperature and infrared radiation at high temperature. Therefore, we combined Debye model and Slack's equation to predict the temperature dependent intrinsic lattice thermal conductivity of Lu4Si2O7N2. All parameters indispensable in the calculation (equilibrium crystal structure, second order elastic constants, elastic modulus, Debye temperature, and Gruneisen constant) were predicted with the help of first-principles calculation methods. Finally, factors that influence the thermal conductivity of Lu4Si2O7N2 were discussed and possible explanations for the difference between experimental and theoretical thermal conductivity were illustrated. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属	[sun, luchao ; tian, zhilin ; wang, jingyang] chinese acad sci, inst met res, high performance ceram div, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [tian, zhilin] univ chinese acad sci, beijing 100049, peoples r china
关键词	Lutetium Silicon Oxynitride Low Thermal Conductivity First-principles Calculation Experimental Investigation
资助者	Natural Sciences Foundation of China [51032006, 51372252, 51402313]
收录类别	sci
语种	英语
WOS记录号	WOS:000357356000006
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74945
专题	中国科学院金属研究所
通讯作者	jywang@imr.ac.cn
推荐引用方式 GB/T 7714	Sun, Luchao,Tian, Zhilin,Wang, Jingyang,et al. Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2015,35(12):3237-3247.
APA	Sun, Luchao,Tian, Zhilin,Wang, Jingyang,&jywang@imr.ac.cn.(2015).Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,35(12),3237-3247.
MLA	Sun, Luchao,et al."Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 35.12(2015):3237-3247.