Synthesis mechanism and sintering behavior of tungsten carbide powder produced by a novel solid state reaction of W2N

Shi-Kuan Sun, Yan-Mei Kan, De Wei Ni, Ji Zou, Guo-Jun Zhang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Nanosized WC powder was synthesized by solid state reaction between tungsten nitride (W2N) and carbon black. The reaction path and the phase evolution during the synthesis were studied. It was found that W2N firstly decomposed to tungsten metal in the middle stage of synthesis, and then it reacted with carbon black to form W2C and WC in sequence. Using this WC powder as the starting material, binderless WC hardmetals were prepared by hot pressing, and the microstructure and mechanical properties of the material were investigated.
Original languageEnglish
JournalInternational Journal of Refractory Metals and Hard Materials
Volume35
Pages (from-to)202-206
ISSN0263-4368
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • Tungsten carbide
  • Solid state reaction
  • Powder processing
  • Ultrafine powder

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