Thermal Properties of Carbon Nanotube-Copper Composites for Thermal Management Applications

被引：130

作者：

Chu, Ke ^{[1
]}

Guo, Hong ^{[1
]}

Jia, Chengchang ^{[2
]}

Yin, Fazhang ^{[1
]}

Zhang, Ximin ^{[1
]}

Liang, Xuebing ^{[2
]}

Chen, Hui ^{[2
]}

机构：

[1] Gen Res Inst NonFerrous Met, Natl Engn & Technol Res Ctr Non Ferrous Met Compo, Beijing 100088, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2010年 / 5卷 / 05期

关键词：

Metal-matrix composites; Carbon nanotubes; Spark plasma sintering; Thermal conductivity; METAL-MATRIX NANOCOMPOSITES; CONDUCTIVITY; RESISTANCE;

D O I：

10.1007/s11671-010-9577-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Carbon nanotube-copper (CNT/Cu) composites have been successfully synthesized by means of a novel particles-compositing process followed by spark plasma sintering (SPS) technique. The thermal conductivity of the composites was measured by a laser flash technique and theoretical analyzed using an effective medium approach. The experimental results showed that the thermal conductivity unusually decreased after the incorporation of CNTs. Theoretical analyses revealed that the interfacial thermal resistance between the CNTs and the Cu matrix plays a crucial role in determining the thermal conductivity of bulk composites, and only small interfacial thermal resistance can induce a significant degradation in thermal conductivity for CNT/Cu composites. The influence of sintering condition on the thermal conductivity depended on the combined effects of multiple factors, i.e. porosity, CNTs distribution and CNT kinks or twists. The composites sintered at 600A degrees C for 5 min under 50 MPa showed the maximum thermal conductivity. CNT/Cu composites are considered to be a promising material for thermal management applications.

引用

页码：868 / 874

页数：7

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