Preparation of CNT/AlSi10Mg composite powders by high-energy ball milling and their physical properties

被引：8
|
作者：
Wang, Lin-zhi [1 ,2 ]
Liu, Ying [1 ]
Wei, Wen-hou [2 ]
An, Xu-guang [1 ]
Zhang, Tao [3 ]
Pu, Ya-yun [3 ]
机构：
[1] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610065, Peoples R China
[2] Chinese Acad Sci, Chongqing Key Lab Multiscale Mfg Technol, Chongqing Inst Green & Intelligent Technol, Chengdu 400714, Peoples R China
[3] Chongqing Univ, Coll Mat Sci & Engn, Chengdu 400044, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2016年 / 23卷 / 03期
基金：
中国国家自然科学基金;
关键词：
metal matrix composites; aluminum alloys; carbon nanotubes; powder metallurgy; particle size distribution; ball milling; physical properties; CARBON NANOTUBES; HARDNESS;
D O I：
10.1007/s12613-016-1242-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study investigated the effects of carbon nanotube (CNT) concentration on the micro-morphologies and laser absorption properties of CNT/AlSi10Mg composite powders produced by high-energy ball milling. A scanning electron microscope, X-ray diffractometer, laser particle size analyzer, high-temperature synchronous thermal analyzer, and UV/VIS/NIR spectrophotometer were used for the analysis of micrographs, phases, granulometric parameters, thermal properties, and laser absorption properties of the composite powders, respectively. The results showed that the powders gradually changed from flake- to granule-like morphology and the average particle size sharply decreased with increases in milling rotational speed and milling time. Moreover, a uniform dispersion of CNTs in AlSi10Mg powders was achieved only for a CNT content of 1.5wt%. Laser absorption values of the composite powders were also observed to gradually increase with the increase of CNT concentration, and different spectra displayed characteristic absorption peaks at a wavelength of approximately 826 nm.
引用
收藏
页码：330 / 338
页数：9
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