Journal of Materials Science

, Volume 22, Issue 10, pp 3615–3619 | Cite as

Diamond synthesis by weak shock loading

  • Toshimori Sekine
  • Minoru Akaishi
  • Nobuo Setaka
  • Ken-Ichi Kondo
Papers

Abstract

A hexagonal polymorph of diamond has been synthesized by relatively weak shock loading (in a range of projectile velocity 0.655 to 1.88 km sec−1) with a recovery technique. Four mixtures of copper with spectroscopic graphite, amorphous carbon, glassy carbon and graphite fluoride, with densities of 4.8 to 7.8 g cm−3, were used to control the shock temperature rise and to quench efficiently. Spectroscopic graphite gave the maximum yield of diamond (8%). Chaoite was also observed in the shocked amorphous carbon and glassy carbon. A local temperature rise during shock was inferred from the temperature of some spherical particles, indicative of superheating of the particles to near or above the melting point.

Keywords

Polymer Copper Graphite Fluoride Melting Point 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1987

Authors and Affiliations

  • Toshimori Sekine
    • 1
  • Minoru Akaishi
    • 1
  • Nobuo Setaka
    • 1
  • Ken-Ichi Kondo
    • 2
  1. 1.National Institute for Research in Inorganic MaterialsSakura-mura, IbarakiJapan
  2. 2.Research Laboratory of Engineering MaterialsTokyo Institute of TechnologyMidori YokohamaJapan

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