Reactive spark plasma sintering of binderless WC ceramics at 1500 C

Shi Kuan Sun, Guo Jun Zhang, Wen Wen Wu, Ji Xuan Liu, Ji Zou, Tohru Suzuki, Yoshio Sakka

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Binderless WC ceramics were prepared by reactive spark plasma sintering, using tungsten trioxide, tungsten and carbon black as the starting materials. Phase assemblages and microstructure of the as-sintered ceramics were investigated. It was found that graphite existed as an impurity phase due to the volatilization of WO3, and W could compensate for the WO3 loss to form WC with a single phase. Benefiting from the enhanced sinterability, WC ceramics with high relative density and good hardness could be obtained at temperature as low as 1500 C.

Original languageEnglish
Pages (from-to)42-45
Number of pages4
JournalInternational Journal of Refractory Metals and Hard Materials
Volume43
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

Keywords

  • Binderless cemented carbides
  • Densification
  • SPS
  • Tungsten carbides

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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