Flexible SiC nanowire aerogel with excellent thermal insulation properties

doi:10.1016/j.ceramint.2022.04.218

CORC > 金属研究所 > 中国科学院金属研究所

	Flexible SiC nanowire aerogel with excellent thermal insulation properties
	Liang, Xianpeng 1,2; Shao, Zhuojie 1,2; Wu, Zhen 2; Wang, Jingyang 2
刊名	CERAMICS INTERNATIONAL
	2022-08-01
卷号	48 期号:15 页码:22172-22178
关键词	SiC Nanowire aerogel Freeze-drying High temperature resistance Flexible Thermal insulation material
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2022.04.218
通讯作者	Wang, Jingyang(jywang@imr.ac.cn)
英文摘要	Aerogels are excellent thermal insulation materials with extremely low thermal conductivity. However, the practical applications of traditional oxide aerogels, such as SiO2 and Al2O3 aerogels, are limited by the disadvantages of easy sintering and intrinsic brittleness. SiC is a good candidate for new aerogel due to its superior stability and good properties from room to high temperatures. However, it is generally supposed that SiC cannot be employed as thermal insulation material because of its high intrinsic thermal conductivity. We herein developed SiC nanowire aerogel with quite low thermal conductivity using freeze-drying method. The fabricated SiC nanowire aerogel exhibits ultra-high porosity (-99.5%), excellent high-temperature stability (-1700 degrees C), extremely low thermal conductivity (0.035 W/(m center dot K)) and good compressive flexibility. The low thermal conductivity is resulted from ultra-high porosity and multi-level nanostructures. Flexible compression behavior is attributed to the capability of moving and buckling of SiC nanowires, originating from both ultra-high porosity and strong connection between nanowires. This exploration highlights the flexible SiC nanowire aerogel as a promising high temperature thermal insulation material.
资助项目	Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-2] ; Liaoning Revitalization Talents Program[XLYC2002018]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000818438800003
资助机构	Key Research Program of the Chinese Academy of Sciences ; Liaoning Revitalization Talents Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174924]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Jingyang
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liang, Xianpeng,Shao, Zhuojie,Wu, Zhen,et al. Flexible SiC nanowire aerogel with excellent thermal insulation properties[J]. CERAMICS INTERNATIONAL,2022,48(15):22172-22178.
APA	Liang, Xianpeng,Shao, Zhuojie,Wu, Zhen,&Wang, Jingyang.(2022).Flexible SiC nanowire aerogel with excellent thermal insulation properties.CERAMICS INTERNATIONAL,48(15),22172-22178.
MLA	Liang, Xianpeng,et al."Flexible SiC nanowire aerogel with excellent thermal insulation properties".CERAMICS INTERNATIONAL 48.15(2022):22172-22178.