Field-assisted sintering of tungsten-, tantalum-, and tungsten carbide-base materials

Sinthu Chanthapan, Jogender Singh, Anil Kulkarni, Chris Haines, Deepak Kapoor

Research output: Contribution to journalArticle

Abstract

Sintering of tantalum-, tungsten-, and tungsten carbide (WC)-base materials was investigated utilizing field assisted sintering technology (FAST). The results show that close to pore-free dense sintered products can be obtained at a relatively low temperature without the aid of additives. Limited grain growth was observed in binderless WC but significant grain growth occurred in tantalum and tungsten. WC was beneficial as a sintering additive in tantalum and tungsten; it lowered the sintering temperature, reduced the sintered grain ! size, and increasing hardness. WC-base materials sintered by FAST exhibited a lower sintering temperature and higher hardness compared with counterpart materials sintered by conventional methods. Bimodal WC-Co materials were also developed by FAST and showed superior mechanical properties.

Original languageEnglish (US)
Pages (from-to)33-40
Number of pages8
JournalInternational Journal of Powder Metallurgy (Princeton, New Jersey)
Volume47
Issue number5
StatePublished - Sep 1 2011

All Science Journal Classification (ASJC) codes

  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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