Enhanced Thermal Conductivity and Bending Strength of Graphite Flakes/aluminum Composites Via Graphite Surface Modification

被引：2

作者：

蒋大鹏 ^{[1
]}

ZHU Xiaomin ^{[2
]}

YU Jiakang ^{[1
]}

机构：

[1] State Key Laboratory of Solidification Processing, Northwestern Polytechnical University

[2] Xi'an Microelectronic Technology Institute

来源：

JournalofWuhanUniversityofTechnology(MaterialsScience) | 2020年 / 35卷 / 01期

关键词：

graphite flakes/Al composites; metal coating; thermal conductivity; bending strength;

D O I：

暂无

中图分类号：

TB333 [金属－非金属复合材料];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of graphite surface modification on the thermal conductivity（TC） and bending strength of graphite flakes/Al composites（G_f/Al） prepared by gas pressure infiltration were investigated. Al3 Ni and Al4C3 phase may form at the interface in Ni-coated G_f/Al and uncoated G_f/Al composites, respectively, while the Al-Cu compound cannot be observed in Cu-coated G_f/Al composites. The Cu and Ni coatings enhance TC and the bending strength of the composites in the meantime. TC of Cu-coated G_f/Al composites reach 515 Wm-1·K-1 with 75 vol% G_f, which are higher than that of Ni-coated G_f/Al. Meanwhile, due to Al3 Ni at the interface, the bending strength of Ni-coated G_f/Al composites are far more than those of the uncoated and Cu-coated G_f/Al with the same content of G_f. The results indicate that metal-coated G_f can effectively improve the interfacial bonding between G_f and Al.

引用

页码：9 / 15

页数：7

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