Effects of Si coated on graphite surface on the thermal and mechanical properties of graphite/Al composites

被引：0

作者：

Wang J. ^{[1
]}

Zhang X. ^{[1
]}

Xue C. ^{[2
]}

Bai H. ^{[2
]}

Jiang N. ^{[2
]}

Zhu Y. ^{[2
]}

Wang C. ^{[2
]}

Ma H. ^{[2
]}

机构：

[1] College of Physics and Electronic Engineering, Henan Normal University, Xinxiang

[2] Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo

来源：

Zhang, Xianzhou (xz-zhang@htu.cn) | 1600年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 34期

关键词：

Bending strength; Composites; Graphite/Al; Si coated; Thermal conductivity;

D O I：

10.13801/j.cnki.fhclxb.20160927.001

中图分类号：

学科分类号：

摘要：

The effect of Si coated on the graphite surface and the grain diameter of graphite flake on thermal and mechanical properties of graphite/Al composites was researched. The results show that the SiC layer is formed during coating process, which is beneficial to suppress the formation of Al4C3 phase and enhance the interface bonding. The thermal conductivity in X-Y plane direction of the graphite-Si/Al composite increases from 492 W/(m·K) to 654 W/(m·K) as the volume fraction of the graphite increases from 50vol% to 70vol%. The flexure strength of graphite/Al composites with 50vol% graphite approachs 81 MPa, which increases by 53% than that of the uncoated graphite/Al. The thermal conductivity in X-Y plane direction of graphite-Si/Al composite decreases from 654 W/(m·K) to 445 W/(m·K) with the grain diameter of the graphite decreases from 500 μm to 150 μm. However, the thermal conductivity in Z plane direction and the flexure strength exhibit no significant change. © 2017, Chinese Society for Composite Materials. All right reserved.

引用

页码：836 / 843

页数：7

共 20 条

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