Effect of alloying element Zr on the microstructure and properties of graphite flake/Cu composites fabricated by vacuum hot pressing

被引：44

作者：

Zhang, Ren ^{[1
]}

He, Xinbo ^{[1
]}

Chen, Haitian ^{[1
]}

Qu, Xuanhui ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 770卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Graphite flake; Composites; Interfacial layer; Thermal conductivity; HIGH THERMAL-CONDUCTIVITY; CU-ZR/DIAMOND COMPOSITES; MATRIX COMPOSITES; MECHANICAL-PROPERTIES; COPPER MATRIX; NANO-LAYER; MANAGEMENT APPLICATIONS; PREFERRED ORIENTATION; DIAMOND PARTICLES; CHROMIUM;

D O I：

10.1016/j.jallcom.2018.08.107

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Graphite flake/Cu composites with Zr element introduced into the matrix were successfully fabricated by vacuum hot pressing. The influence of Zr addition on the phase composition, microstructure and properties were investigated. The results indicate that the bending strength in X-Y plane gradually rises with the Zr content increasing from 0 to 2.0 wt%, nearly doubled from 50 MPa to 95 MPa. The thermal conductivity in X-Y plane initially increases and then decreases, yielding a maximum of 640 W m(-1) K-1 at 1.0 wt% Zr. This improvement is ascribed to the formation of carbide interfacial layer at the graphite flake/Cu interface. Due to the simple preparation process and excellent thermal conductivity, the graphite flake/Cu composites with moderate Zr addition can be a highly promising candidate for thermal management materials. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：267 / 275

页数：9

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