Effect of Anisotropic Thermal Conductivity of Graphite Flakes and Interfacial Thermal Resistance on the Effective Thermal Conductivity of Graphite Flakes/Aluminum Composites

被引：6

作者：

Zhao, Yan ^{[1
]}

Sugio, Kenjiro ^{[1
]}

Choi, Yongbum ^{[1
]}

Gen, Sasaki ^{[1
]}

Xu, Zhefeng ^{[2
]}

Yu, Jinku ^{[2
]}

机构：

[1] Hiroshima Univ, Grad Sch Engn, Higashihiroshima 7398527, Japan

[2] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

来源：

MATERIALS TRANSACTIONS | 2021年 / 62卷 / 01期

基金：

日本学术振兴会;

关键词：

graphite flakes/aluminum composites; orientation; interfacial thermal resistance; effective thermal conductivity; image-based simulation; ALUMINUM-MATRIX COMPOSITES; PREFERRED ORIENTATION; FABRICATION;

D O I：

10.2320/matertrans.MT-M2020071

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effective thermal conductivity (ETC) of graphite flake (GF)/Al composites is significantly influenced by the anisotropic thermal conductivity of GFs and the interfacial thermal resistance between both components. A two-dimensional (2D) image-based simulation was used in this study to investigate the effect of both the orientation of GFs and interfacial thermal resistance on the ETC of the composite. 10 vol% GF/Al and 20 vol% GF/Al composites were fabricated via spark plasma sintering. The microstructure ETC, and the relative density of the GF/Al composites were determined. The experimental ETCs were smaller than calculated ETCs using the rule of mixture. Additionally, the calculated ETC exhibited a decrease of 9.9% due to the effect of GF anisotropic thermal conductivity, and the ETC values decreased by 14.2% due to the effect of the interfacial thermal resistance at the Al-GF interface of the samples, which was determined to be in the range of 5.62-6.41 x 10(-8) m(2) K W-1.

引用

页码：98 / 104

页数：7

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