An approach for homogeneous carbon nanotube dispersion in Al matrix composites
An approach for homogeneous carbon nanotube dispersion in Al matrix composites
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DOI：
10.1016/j.matdes.2015.02.003
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发表时间：
2015-05-05
影响因子：
8.4
通讯作者：
Kondoh, Katsuyoshi
中科院分区：
文献类型：
--
作者：
Chen, Biao;Li, Shufeng;Kondoh, Katsuyoshi
碳纳米管良好的分散性是将其优异性能转化为碳纳米管增强复合材料的瓶颈。在这项研究中，一种溶液球磨（SBM）的方法来均匀分散碳纳米管在铝基复合材料（AMC）。该工艺将溶液包覆、机械球磨和片状铝的制备方法有机地结合在一起。通过扫描电镜、透射电镜、拉曼光谱分析和拉伸试验，研究了碳纳米管在SBM制备的AMCs中的分散质量、晶体结构和增强效果。与以前的方法相比，SBM过程是简单和有效的，以获得均匀的CNT分散体具有大的纵横比和小的CNT损伤。结果表明，碳纳米管的加入显著提高了铝基体的抗拉强度，这与载荷传递机制预测的潜在强化效果相一致。(C)2015爱思唯尔有限公司版权所有。
Good dispersion of carbon nanotubes (CNTs) was the bottleneck to convert their attractive properties to CNT reinforced composites. In this study, a solution ball milling (SBM) approach was developed to homogeneously disperse CNTs in Al matrix composites (AMCs). The process integrated strategies of solution coating, mechanical ball milling and Al-flake producing into a simple organic unity. The dispersion quality, crystal-structure and strengthening effect of CNTs in AMCs processed by SBM were investigated through scanning electron microscopy, transmission electron microscopy, Raman analysis and tensile tests. Compared with previous methods, the SBM process was simple and effective to obtain a homogeneous CNT dispersion with a large aspect ratio and small CNT damages. Resultantly, the tensile strength of Al matrix was noticeably enhanced by CNT additions agreeing with the potential strengthening effect predicted by the load transfer mechanism. (C) 2015 Elsevier Ltd. All rights reserved.