Preparation of CNT/AlS i10Mg composite powders by high-energy ball milling and their physical properties
来源期刊：International Journal of Minerals Metallurgy and Materials2016年第3期
论文作者：Lin-zhi Wang Ying Liu Wen-hou Wei Xu-guang An Tao Zhang Ya-yun Pu
文章页码：330 - 338
摘 要：This study investigated the effects of carbon nanotube（CNT） concentration on the micro-morphologies and laser absorption properties of CNT/AlS i10 Mg 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 AlS i10 Mg 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.
Lin-zhi Wang1,2，Ying Liu1，Wen-hou Wei2，Xu-guang An1，Tao Zhang3，Ya-yun Pu3
1. College of Materials Science and Engineering, Sichuan University2. Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences3. College of Materials Science and Engineering, Chongqing University
摘 要：This study investigated the effects of carbon nanotube（CNT） concentration on the micro-morphologies and laser absorption properties of CNT/AlS i10 Mg 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 AlS i10 Mg 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.
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