Distribution and stability of carbon nanotubes during multi-pass friction stir processing of carbon nanotube/aluminum composites

被引：133
作者：
Izadi, Hossein [1 ]
Gerlich, Adrian P. [1 ]
机构：
[1] Univ Alberta, Chem & Mat Engn Dept, Edmonton, AB T6G 2V4, Canada
来源：
CARBON | 2012年 / 50卷 / 12期
基金：
加拿大自然科学与工程研究理事会;
关键词：
MECHANICAL-PROPERTIES; MATRIX COMPOSITE; FABRICATION; SURFACE; PERFORMANCE; ALLOY;
D O I：
10.1016/j.carbon.2012.06.012
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：
Multi-pass friction stir processing was used to fabricate multi-walled carbon nanotube/aluminum composites with a high volume fraction (>50%) of reinforcing material homogeneously dispersed in the matrix. The microhardness of the produced composites were two times higher than the original aluminum alloy. SEM and TEM analyses of the microstructures indicated that the reinforcing phase was uniformly distributed after three friction stir passes but the thermo-mechanical cycles destroyed the tubular structure of the carbon nanotubes. TEM micrographs revealed that carbon nanotubes were mostly transformed to polyaromatic and turbostratic carbon structures along with Al4C3 after 3 passes. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4744 / 4749
页数：6
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