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Mechanical properties and friction behaviors of CNT/AlSi10Mg composites produced by spark plasma sintering

Article

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°C. CNTs dispersed uniformly in the Al-Si10Mg 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.

Keywords

metal matrix composites carbon nanotubes (CNTs) aluminum silicon magnesium alloys spark plasma sintering mechanical properties friction 

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Notes

Acknowledgments

The study is supported by the National Natural Science Foundation of China (NSFC, China) under Grant Number of 51405467, Chongqing Research of Application Foundation and Advanced Technology (project No. cstc2016jcyj A0016), and the Key Program of the Chinese Academy of Sciences (No. KGZD-EW-T0).

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Copyright information

© University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Lin-zhi Wang
    • 1
    • 2
  • Ying Liu
    • 2
  • Jiao-jiao Wu
    • 1
  • Xi Zhang
    • 3
  1. 1.Chongqing Key Laboratory of Additive Manufacturing Technology and Systems, Chongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqingChina
  2. 2.College of Material Science and EngineeringSichuan UniversityChengduChina
  3. 3.College of Material Science and EngineeringSouthwest Jiaotong universityChengduChina

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