Flexible SiC nanowire aerogel with excellent thermal insulation properties

doi:10.1016/j.ceramint.2022.04.218

IMR OpenIR

	Flexible SiC nanowire aerogel with excellent thermal insulation properties
	Liang, Xianpeng 1,2; Shao, Zhuojie 1,2; Wu, Zhen 1; Wang, Jingyang 1
通讯作者	Wang, Jingyang(jywang@imr.ac.cn)
	2022-08-01
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	48 期号:15 页码:22172-22178
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.
关键词	SiC Nanowire aerogel Freeze-drying High temperature resistance Flexible Thermal insulation material
资助者	Key Research Program of the Chinese Academy of Sciences ; Liaoning Revitalization Talents Program
DOI	10.1016/j.ceramint.2022.04.218
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000818438800003
出版者	ELSEVIER SCI LTD
引用统计	被引频次：23[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/321006/174925
专题	中国科学院金属研究所
通讯作者	Wang, Jingyang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 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.