Journal of Materials Science

, Volume 25, Issue 9, pp 4150–4156 | Cite as

Sintering behaviour of the diamond-super invar alloy system at high temperature and pressure

  • Shang-Jie Li
  • Minoru Akaishi
  • Toshikazu Ohsawa
  • Shinobu Yamaoka


In the diamond-super invar alloy system, effect of the grain size of the starting diamond powder on the sintering behaviour was investigated at 5.8 G Pa and 1300 to 1500 ° C for 30 to 60 min. Abnormal grain growth was often observed in the sintered diamond using fine diamond powder, but a homogeneous sintered diamond was easily synthesized using 5 to 10μm diamond. By the rigorous control of sintering conditions, a 3μm grain size homogeneous sintered diamond was synthesized under conditions of 5.8 G Pa and 1350 ° C for 30 min. The Vickers hardness and thermal resistance of the fine grained sintered diamond was examined.


Polymer Grain Size Thermal Resistance Alloy System Vickers Hardness 
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Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • Shang-Jie Li
    • 1
  • Minoru Akaishi
    • 1
  • Toshikazu Ohsawa
    • 1
  • Shinobu Yamaoka
    • 1
  1. 1.National Institute for Research in Inorganic MaterialsIbarakiJapan

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