Mechanical properties and friction behaviors of CNT/AlSi10Mg composites produced by spark plasma sintering |
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| Authors: | Ying Liu Jiao-jiao Wu Xi Zhang |
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| Institution: | 1. College of Material Science and Engineering, Sichuan University, Chengdu 610065, China;2. Chongqing Key Laboratory of Additive Manufacturing Technology and Systems, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China;3. College of Material Science and Engineering, Southwest Jiaotong university, Chengdu 610065, China |
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| Abstract: | The mechanical properties and friction behaviors of CNT/AlSi10Mg composites produced by spark plasma sintering (SPS) were investigated.The results showed that the densities of the sintered composites gradually increased with increasing sintering temperature and that the highest microhardness and compressive strength were achieved in the specimen sintered at 450℃.CNTs dispersed uniformly in the AlSi10Mg matrix when the addition of CNTs was less than 1.5wt％.However,when the addition of CNTs exceeded 1.5wt％,the aggregation of CNTs was clearly observed.Moreover,the mechanical properties (including the densities,compressive strength,and microhardness) of the composites changed with CNT content and reached a maximum value when the CNT content was 1.5wt％.Meanwhile,the minimum average friction coefficient and wear rate of the CNT/AlSi10Mg composites were obtained with 1.0wt％ CNTs. |
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| Keywords: | metal matrix composites carbon nanotubes (CNTs) aluminum silicon magnesium alloys spark plasma sintering mechanical properties friction |
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