Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Compaction of Ultra-fine WC Powder by High-Speed Centrifugal Compaction Process

  • Suzuki, Hiroyuki Y. (Graduate school of engineering, Hiroshima University) ;
  • Kadono, Yuichi (Graduate school of engineering, Hiroshima University) ;
  • Kuroki, Hidenori (Graduate school of engineering, Hiroshima University)
  • Published : 2006.09.24
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Abstract

High-Speed Centrifugal Compaction Process is one of slip-using compacting method originally developed for processing of oxide ceramics. In this study, we apply the HCP to ultra-fine (0.1 micron) WC powder. Organic liquid of heptane was chosen as dispersing media to avoid possible oxidation of WC. The mixing apparatus was a key to obtain dense compacts. Only the slips mixed by high energy planetary ball mill were packed up to 55% by the HCP, and sintered to almost full density at 1673 K without any sintering aids. This sintered compact marked Vickers hardness of Hv 2750 at maximum.

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