Articles
  • Mechanical properties and electrical resistivity of SiC-TiC composites with nitrate sintering additives

  • Sung Min Soa,b, Hee Woong Hwanga,c, Sam Heang Yia,c, Joo Seok Parka,*, Kyoung Hun Kima, Kwang Ho Leed, Jongee Parke and Sung Gap Leec

  • aKorea Institute of Ceramic Engineering and Technology, Jinju, Korea
    bInformation Materials Lab. Materials Engineering, Inha University, Incheon, Korea
    cCeramic Engineering Department, Gyougsang National University, Jinju, Korea
    dBooil Technology co., Ltd., Gunpo, Korea
    eDepartment of Metallurgical and Materials Engineering, ATILIM University, Ankara, Turkey

Abstract

We fabricated SiC-TiC composites by hot-press sintering with aluminum and yttrium nitrate additive and evaluated crystal phase, relative density, microstructure, electrical resistivity and mechanical properties of the sintered body. And the effect of nitrate additive on the densification of SiC-TiC composites was compared with that of Al2O3 and Y2O3 additives. Because nitrate additives were uniformly dispersed in SiC and TiC mixture, it inhibited the growth of crystal grain between each other and formed fine and uniform microstructure, thereby improving mechanical properties and electrical resistivity. The electrical resistivity and flexural strength of the SiC-TiC composite with aluminum and yttrium nitrate additive were 2.3 Ω·cm and 652.3 MPa respectively.


Keywords: SiC-TiC, Composites, Mechanical properties, Electrical resistivity, Nitrate additive

This Article

  • 2020; 21(S1): 16-22

    Published on May 31, 2020

  • 10.36410/jcpr.2020.21.S1.s16
  • Received on Dec 17, 2019
  • Revised on Mar 22, 2020
  • Accepted on Mar 24, 2020

Correspondence to

  • Joo Seok Park

  • Korea Institute of Ceramic Engineering and Technology, Jinju, Korea
    Tel : +82-55-792-2775
    Fax: +82-55-792-2796

  • E-mail: pjuju@kicet.re.kr