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

G. H. Lee; S. Kang

doi:10.2320/matertrans.42.1575

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

G. H. Lee, S. Kang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 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 language	English
Pages (from-to)	1575-1581
Number of pages	7
Journal	Materials Transactions
Volume	42
Issue number	8
DOIs	https://doi.org/10.2320/matertrans.42.1575
Publication status	Published - 2001

All Science Journal Classification (ASJC) codes

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

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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.",

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year = "2001",

doi = "10.2320/matertrans.42.1575",

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AB - 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.

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

Abstract

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