Structure formation of the superhard carbon ceramics in sintering powders of the carbon amorphous phase in a mixture with nanocrystalline diamond at high static pressures |
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| Authors: | B F Britun A V Kurdyumov A V Bochko A I Danilenko N N Kuzin |
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| Affiliation: | 1.Frantsevich Institute for Materials Science Problems,National Academy of Sciences of Ukraine,Kiev,Ukraine;2.Vereshchagin Institute of High Pressure Physics,Russian Academy of Sciences,Troitsk, Moscow oblast,Russia |
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| Abstract: | The results have been discussed of studying the structure and hardness of polycrystals produced from nanodispersed powders
of mixtures of the amorphous carbon phase and nanocrystalline diamond. The initial powders have been synthesized by high-temperature
shock compression and sintered at a pressure of 13 GPa and temperatures from 1100 to 2000°C. The sintering has been accompanied
by the transformation of amorphous carbon into diamond. As the diamond content of the sample has been increased from 10 to
100%, the hardness increased from 45 to 80 GPa. |
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