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진공 소결공정에 의한 고밀도 바인더리스 및 극저바인더 초경합금의 제조

Consolidation of Binderless and Low-Binder WC hardmetalby Vacuum Sintering

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참고문헌

주제분류금속공학

초록

Abstract

Pure WC or WC with low Co concentration less than 0.5 wt.% is studied to fabricate high density WC/Co cemented carbide using vacuum sintering and post HIP process. Considering the high melting point of WC, it is difficult to consolidate it without the use of Co as binder. In this study, the effect of lower Co addition on the microstructure and mechanical properties evolution of WC/Co was investigated. By HIP process after vacuum sintering, hardness and density was sharply increased. The hardness values was 2,800 kgf/㎟ using binderless WC.

참고문헌 (7)

  1. "Materials Sci. & Eng", 31, pp.A356~ (2003)
  2. "Int. J. Refractory Metal & Hard Materials", 15, pp.3~ (1997)
  3. "J. Korean Powder Metallurgy Inst", 5, pp.279~ (1998)
  4. "J. Korean Powder Metallurgy Inst", 2, pp.108~ (2003)
  5. "Scripta Materialia", 54, pp.441~ (2006)
  6. "J. of the Korean Ceramic Society", 2, pp.131~ (2004)
  7. "Materials Sci. & Eng", A430, pp.113~ (2006)

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