한국분말재료학회지 (Journal of Powder Materials)

  • 제9권4호
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  • Pages.273-279
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  • 2002
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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입자성장 억제제 VC/TaC가 첨가된 나노구조 WC-Co 초경 복합분말의 제조와 소결 특성 연구

Synthesis and Sintering Behaviors of Nanostructured WC-Co Hardmetal Powders doped Grain Growth Inhibitors of VC/TaC

  • 김병기 (한국기계연구원 나노분말재료그룹) ;
  • 하국현 (한국기계연구원 나노분말재료그룹) ;
  • 권대환 (한국기계연구원 나노분말재료그룹) ;
  • 김진천 (한국기계연구원 나노분말재료그룹)
  • 발행 : 2002.08.01
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초록

In this study, the WC-10 wt.%Co nanopowders doped by grain growth inhibiter were produced by three different methods based on the spray conversion process. Agglomerated powders with homeogenous distribution of alloying elements and with internal particles of about 100-200 nm in diameter were synthesized. The microstructural changes and sintering behavior of hardmetal compacts were compared with doping method and sintering conditions. The microstructure of hardmetals was very sensitive to doping methods of inhibitor. Nanostructured WC-Co hardmetal powder compacts containing TaC/VC doped by chemical method instead of ball-milling shown superior sintering densification, and the microstructure maintained ultrafine scale with rounded WC particles.

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참고문헌

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피인용 문헌

  1. Effect of Si on the Mechanical Properties of WC-Ni Hard Metal vol.123-125, pp.1662-8985, 2010, https://doi.org/10.4028/www.scientific.net/AMR.123-125.1211