Superhard phases of simple substances and binary compounds of the B-C-N-O system: from diamond to the latest results (a Review)

  title={Superhard phases of simple substances and binary compounds of the B-C-N-O system: from diamond to the latest results (a Review)},
  author={Oleksandr O. Kurakevych},
  journal={Journal of Superhard Materials},
  • O. Kurakevych
  • Published 2009
  • Materials Science, Physics
  • Journal of Superhard Materials
The basic known and hypothetic one- and two-element phases of the B-C-N-O system (both superhard phases having diamond and boron structures and precursors to synthesize them) are described. The attention has been given to the structure, basic mechanical properties, and methods to identify and characterize the materials. For some phases that have been recently described in the literature the synthesis conditions at high pressures and temperatures are indicated. 
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Superhard boron-rich borides and studies of the BCN system
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Novel ternary diamond-like phases of the B–C–N system were synthesized at pressures up to 30 GPa and temperatures up to 3500 K by static and dynamic compression of graphite-like BN–C solid solutions.Expand
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Depending on pressure–temperature conditions, fullerite crystals can transform as to the well-known carbon phases, graphite and diamond, and to new metastable crystalline and amorphous modifications.Expand
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