Significant improvement of thermal conductivity for AlN/LAS composite with low thermal expansion

doi:10.1016/j.ceramint.2020.08.026

	Significant improvement of thermal conductivity for AlN/LAS composite with low thermal expansion
	Li, Zhenyu 1; Wang, Chi 1; Xia, Long 1; Yang, Hua 2; Qin, Chunlin 1; Zhong, Bo 1; Xiong, Li 1; Huang, Xiaoxiao 3; Wen, Guangwu 4
刊名	Ceramics International
	2020-12-15
卷号	46 期号:18 页码:28668-28675
关键词	Aluminum nitride Expansion Heat conduction III-V semiconductors Lithium compounds Thermal expansion High thermal conductivity Lithium aluminosilicate Low coefficient of thermal expansions Low thermal expansion Precision instrument Reinforcing phase Thermal functions
ISSN号	02728842
DOI	10.1016/j.ceramint.2020.08.026
英文摘要	Lithium aluminosilicate (LAS), as a ceramic material with ultra-low thermal expansion, has a wide application in the field of precision instruments. But the effective integration of multiple thermal functions, including low thermal expansion and high thermal conductivity, into one material remains a huge challenge. To obtain LAS composites with high thermal conductivity, AlN was added as the reinforcing phase in LAS matrix, which can form a perfect heat conduction network and act as bridges for transferring heat. The thermal conductivity of the composite reaches 12.8 W/(m K) when the AlN content increased to 40 wt%, which is more than 5 times higher than that of bulk LAS. At the same time, the composite still maintains a low coefficient of thermal expansion of less than 3.2 × 10-6/K which matching that of silicon. Therefore, the proper combination between the components of composites is beneficial to the preparation of AlN/LAS composites with both low thermal expansion and excellent thermal conductivity. © 2020 Elsevier Ltd and Techna Group S.r.l.
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115710]
专题	马克思主义学院材料科学与工程学院理学院
作者单位	1.School of Materials Science and Engineering, Harbin Institute of Technology (Weihai), Weihai; 264209, China; 2.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin; 150001, China; 4.School of Materials Science and Engineering, Shandong University of Technology, Zibo; Shandong; 255049, China
推荐引用方式 GB/T 7714	Li, Zhenyu,Wang, Chi,Xia, Long,et al. Significant improvement of thermal conductivity for AlN/LAS composite with low thermal expansion[J]. Ceramics International,2020,46(18):28668-28675.
APA	Li, Zhenyu.,Wang, Chi.,Xia, Long.,Yang, Hua.,Qin, Chunlin.,...&Wen, Guangwu.(2020).Significant improvement of thermal conductivity for AlN/LAS composite with low thermal expansion.Ceramics International,46(18),28668-28675.
MLA	Li, Zhenyu,et al."Significant improvement of thermal conductivity for AlN/LAS composite with low thermal expansion".Ceramics International 46.18(2020):28668-28675.