J. Mater. Sci. Technol. ›› 2017, Vol. 33 ›› Issue (11): 1416-1423.DOI: 10.1016/j.jmst.2017.06.014

• Orginal Article • Previous Articles     Next Articles

Comparative study of mechanical and wear behavior of Cu/WS2 composites fabricated by spark plasma sintering and hot pressing

Wang Qunchanga, Chen Minghuia*(), Shan Zhongmaob, Sui Chengguob, Zhang Linc, Zhu Shenglongd, Wang Fuhuia   

  1. a Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Material Science and Engineering, Northeastern University, Shenyang 110819, China
    b AVIC Chengdu Aircraft Design & Research Institute, Chengdu 610041, China;
    c AVIC Chengdu Aircraft Industrial (Group) Co., Ltd, Chengdu 610041, China
    d Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2017-02-28 Revised:2017-04-01 Accepted:2017-06-06 Online:2017-11-20 Published:2018-01-25
  • Contact: Chen Minghui
  • About author:

    1 These two authors contributed equally to this paper.

Abstract:

The mechanical and wear behavior of copper-tungsten disulfide (Cu/WS2) composites fabricated by spark plasma sintering (SPS) and hot pressing (HP) was investigated, comparatively. Results indicated that the addition of lubricant WS2 substantially reduced wear rate of the Cu matrix composites fabricated by SPS, and the optimum content of WS2 is 20?wt% with regard to the wear behavior. However, it affected a little to the wear rate while dramatically decreased the friction coefficient of the composite fabricated by HP. This difference in friction behavior of the self-lubricating composites fabricated by the two techniques was closely related to their different mechanical properties. Severe interfacial reaction occurred during spark plasma sintering, leading to brittle phase formation at interface.

Key words: Metal-matrix composites (MMCs), Hardness, Self-lubricating, Spark plasma sintering, Interfacial reaction