Recent developments in hard materials

This paper reviews some new developments in hard materials during the last decade: new approaches to diamond synthesis including chemical vapor deposition and the laser QQC method, tetrahedral carbons, deposition of cubic boron nitride, ternary boron-carbon-nitrogen and boron-carbon-silicon phases....

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Bibliographic Details
Published in:International journal of refractory metals & hard materials 1997, Vol.15 (1), p.3-12
Main Authors: Badzian, Andrzej, Badzian, Teresa
Format: Article
Language:English
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Summary:This paper reviews some new developments in hard materials during the last decade: new approaches to diamond synthesis including chemical vapor deposition and the laser QQC method, tetrahedral carbons, deposition of cubic boron nitride, ternary boron-carbon-nitrogen and boron-carbon-silicon phases. The issue of ultimate hardness of diamond reappeared again because of pseudopotential calculation of cohesive energy of a hypothetical β-C 3N 4 structure. The stability of carbon nitride phases is analyzed in connection with the authors study of synthesis and structure of carbon nitride by nitrogen microwave plasma. Only soft graphitic CN x, x < 1 phase, stable up to 900 °C, survived criticism.
ISSN:0263-4368
2213-3917
DOI:10.1016/S0263-4368(96)00047-9