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

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Direct Conversion Sintering of Super-hard Nano-polycrystalline Diamond from Graphite

  • Sumiya, Hitoshi (Electronics & Materials R&D Laboratories, Sumitomo Electric Industries) ;
  • Irifune, Tetsuo (Geodynamics Research Center, Ehime University)
  • Published : 2006.09.24
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Abstract

High-purity and super-hard nano-polycrystalline diamond has been successfully synthesized by direct conversion from high-purity graphite under static pressures above 15 GPa and temperatures above $2300^{\circ}C$. This paper describes research findings on the formation mechanism of nano-structure and on the contributing factor leading to high hardness.

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