Mechanical, electrical, and thermal properties of graphene nanosheet/aluminum nitride composites

被引：76
|
作者：
Yun, Chuang [1 ]
Feng, Yongbao [1 ,2 ]
Qiu, Tai [1 ]
Yang, Jian [1 ]
Li, Xiaoyun [1 ]
Yu, Lei [1 ]
机构：
[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 210009, Jiangsu, Peoples R China
[2] Nanjing Sanle Elect Informat Ind Grp Co Ltd, Nanjing 211800, Jiangsu, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 07期
关键词：
Electrical properties; Mechanical properties; Thermal properties; Graphene nanosheets; MN; ALN CERAMICS; MICROSTRUCTURE; RESISTIVITY; PERCOLATION; TRANSPORT; BEHAVIOR; ROUTE; PHASE;
D O I：
10.1016/j.ceramint.2015.03.075
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Graphene nanosheet (GNS)/aluminum nitride (AlN) composites were prepared by hot-pressing and effects of GNSs on their microstructural, mechanical, thermal, and electrical properties were investigated. At 1.49 vol% GNSs content, the fracture toughness (5.09 MPa m(1/2)) and flexural strength (441 MPa) of the composite were significantly increased by 30.17% and 17.28%, respectively, compared to monolithic AN. The electrical conductivity of the composites was effectively enhanced with the addition of GNSs, and showed a typical percolation behavior with a low percolation threshold of 2.50 +/- 0.4 vol%. The thermal conductivity of the composites decreased with the addition of GNSs. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：8643 / 8649
页数：7
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