Approaching ultra-low thermal conductivity in beta-SiC nanoparticle packed beds through multiple heat blocking mechanisms

IMR OpenIR

	Approaching ultra-low thermal conductivity in beta-SiC nanoparticle packed beds through multiple heat blocking mechanisms
	Wan, Peng; Gao, Liyin; Wang, Jingyang; Wang, JY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
	2017-02-01
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	128 页码:1-5
摘要	The crucial challenge for oxide thermal insulators, such as Al2O3 and SiO2 nano-particle aggregates, is to solve the trade-off between extremely low thermal conductivity and unsatisfied sintering stability. We herein report the ultra-low thermal conductivities (0.068-0.1 W m(-1) K-1) of beta-SiC nanoparticle (similar to 35 nm) packed beds. The breakthrough is realized by multiple heat blocking mechanisms in the nanostructures. The samples also possess good thermal stability as high as 1500 degrees C. Our results provide a new strategy to explore ultra-low thermal conductivity materials with excellent thermal stability, regardless of their high intrinsic lattice thermal conductivities. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; The crucial challenge for oxide thermal insulators, such as Al2O3 and SiO2 nano-particle aggregates, is to solve the trade-off between extremely low thermal conductivity and unsatisfied sintering stability. We herein report the ultra-low thermal conductivities (0.068-0.1 W m(-1) K-1) of beta-SiC nanoparticle (similar to 35 nm) packed beds. The breakthrough is realized by multiple heat blocking mechanisms in the nanostructures. The samples also possess good thermal stability as high as 1500 degrees C. Our results provide a new strategy to explore ultra-low thermal conductivity materials with excellent thermal stability, regardless of their high intrinsic lattice thermal conductivities. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[wan, peng ; gao, liyin ; wang, jingyang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [wan, peng ; gao, liyin] univ chinese acad sci, beijing 100049, peoples r china
关键词	Nanostructured Sic Low Thermal Conductivity High Thermal Stability
学科领域	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	Natural Science Foundation of China [51032006, 5137225]
收录类别	SCI
语种	英语
WOS记录号	WOS:000388783500001
引用统计	被引频次：26[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/321006/78327
专题	中国科学院金属研究所
通讯作者	Wang, JY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Wan, Peng,Gao, Liyin,Wang, Jingyang,et al. Approaching ultra-low thermal conductivity in beta-SiC nanoparticle packed beds through multiple heat blocking mechanisms[J]. SCRIPTA MATERIALIA,2017,128:1-5.
APA	Wan, Peng,Gao, Liyin,Wang, Jingyang,&Wang, JY .(2017).Approaching ultra-low thermal conductivity in beta-SiC nanoparticle packed beds through multiple heat blocking mechanisms.SCRIPTA MATERIALIA,128,1-5.
MLA	Wan, Peng,et al."Approaching ultra-low thermal conductivity in beta-SiC nanoparticle packed beds through multiple heat blocking mechanisms".SCRIPTA MATERIALIA 128(2017):1-5.