Articles
  • Mechanical properties of silicon carbide/graphene nanoplatelets composites prepared by spark plasma sintering

  • Zhang Xiulinga, Chen Yuhonga,b,*, Liu Limenga, Qi Wubina, Hai Wanxiua,b, Xue Mina and Hong Tianxianga

  • aSchool of Materials Science and Engineering, North Minzu University, Yinchuan, 750021, China
    bKey Lab of Powder Material & Advanced Ceramics, Yinchuan 750021, China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Silicon carbide (SiC)/graphene nanoplatelets (GNPs) ceramic composites with additions of 0, 1, 2, 4, 6, 8 wt.% GNPs were fabricated by spark plasma sintering (SPS). Effects of GNPs addition on densification, microstructure and mechanical properties (vickers hardness and fracture toughness) of the SiC/GNPs composites were investigated. As GNPs content increased, relative density of the composites decreased slightly from 99.0% for monolithic SiC to 98.3% at 8 wt.% GPNs. Uniform distribution of GNPs in the microstructure was exhibited. Vickers hardness was increased by 7% (25.4 GPa) in the 1 wt.% GNPs composition relative to monolithic SiC (23.5 GPa). The Vickers hardness and fracture toughness changes indicated different states of GNPs existence in the SiC/GNPs composites, among which thin-layered GNPs wrapping SiC grains could benefit Vickers hardness relative to agglomeration of GNPs


Keywords: Silicon carbide, Graphene nanoplatelets, Microstructure, Mechanical properties

This Article

  • 2024; 25(4): 483-489

    Published on Aug 31, 2024

  • 10.36410/jcpr.2024.25.4.483
  • Received on Sep 12, 2023
  • Revised on Nov 23, 2023
  • Accepted on Dec 4, 2023

Correspondence to

  • Chen Yuhong

  • aSchool of Materials Science and Engineering, North Minzu University, Yinchuan, 750021, China
    bKey Lab of Powder Material & Advanced Ceramics, Yinchuan 750021, China
    Tel : 13079598519 Fax: 0086-951-2066827

  • E-mail: lyhchen@163.com