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Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies
Sun, Luchao; Tian, Zhilin; Wang, Jingyang; jywang@imr.ac.cn
2015
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume35Issue:12Pages:3237-3247
AbstractThermal 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.
description.department[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
KeywordLutetium Silicon Oxynitride Low Thermal Conductivity First-principles Calculation Experimental Investigation
Funding OrganizationNatural Sciences Foundation of China [51032006, 51372252, 51402313]
Indexed Bysci
Language英语
WOS IDWOS:000357356000006
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74945
Collection中国科学院金属研究所
Corresponding Authorjywang@imr.ac.cn
Recommended Citation
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.
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