Synthesis of nano-sized WC-Co powders by reduction-carburization process

G. H. Lee, S. Kang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The feasibility of producing nano-sized WC and WC-Co powders by reduction and carburization of WO3 and Co3O4 under hydrogen and methane atmospheres was evaluated. WC powders of 1 μm in particle size were obtained from WO3 on reduction and carburization at 950°C. On the other hand, nano-sized WC-Co powders with a particle size of ∼ 100 nm could be produced by a two-step reduction process, using a blend of WO3 and Co3O4. Critical control parameters in this process, such as the gas flow rate, temperature and treatment time, were found.

Original languageEnglish
Pages (from-to)1575-1581
Number of pages7
JournalMaterials Transactions
Volume42
Issue number8
DOIs
Publication statusPublished - 2001 Jan 1

Fingerprint

Powders
synthesis
Particle size
Methane
gas flow
Flow of gases
Hydrogen
methane
flow velocity
Flow rate
atmospheres
hydrogen
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Lee, G. H. ; Kang, S. / Synthesis of nano-sized WC-Co powders by reduction-carburization process. In: Materials Transactions. 2001 ; Vol. 42, No. 8. pp. 1575-1581.
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Synthesis of nano-sized WC-Co powders by reduction-carburization process. / Lee, G. H.; Kang, S.

In: Materials Transactions, Vol. 42, No. 8, 01.01.2001, p. 1575-1581.

Research output: Contribution to journalArticle

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