Thermal expansion of MWCNT-reinforced copper composite

来源期刊:中国有色金属学报(英文版)2007年增刊第1期(Part ⅡB)

论文作者:许龙山 陈小华 潘伟英 李文华 杨植 蒲玉兴 易国军 易斌 张科

文章页码:1065 - 1069

Key words:carbon nanotubes; copper; composite; thermal expansion

Abstract: Multi-walled carbon nanotube (MWCNT)-reinforced copper composite was fabricated by a novel method, which involves solution phase synthesis of MWCNT-implanted cuprous oxide composite spheres, formation of MWCNT/ copper composite spheres after reduction in H2 atmosphere and preparation of the MWCNT/copper bulk with vacuum hot pressing. The SEM images of the fracture surfaces indicate that MWCNTs are homogeneously dispersed in the composite and bonded to the matrix. In addition, the thermal expansion of the composites with various MWCNT contents (0%, 1% and 5%, mass fraction) were investigated. The coefficient of thermal expansion (CTE) decreases with increasing MWCNT content, which are all much lower than that of pure copper.

基金信息:the National Natural Science Foundation of China
the Science Foundation of Hunan Province, China

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