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

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Tantalum carbide
Tungsten
Spark plasma sintering
Tungsten carbide
Tantalum
Sintering
Grain growth
Hardness
Temperature
Mechanical properties
tungsten carbide

All Science Journal Classification (ASJC) codes

  • Metals and Alloys
  • Industrial and Manufacturing Engineering

Cite this

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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.",
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Field-assisted sintering of tungsten-, tantalum-, and tungsten carbide-base materials. / Chanthapan, Sinthu; Singh, Jogender; Kulkarni, Anil; Haines, Chris; Kapoor, Deepak.

In: International Journal of Powder Metallurgy (Princeton, New Jersey), Vol. 47, No. 5, 01.09.2011, p. 33-40.

Research output: Contribution to journalArticle

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AU - Chanthapan, Sinthu

AU - Singh, Jogender

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AU - Kapoor, Deepak

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