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Features of the formation of cubic BCN phases in comparison with natural and synthetic polycrystalline diamonds

Vladimir P. Filonenko, Igor P. Zibrov, Vitaly A. Petrovsky and Alexander E. Sukharev
Features of the formation of cubic BCN phases in comparison with natural and synthetic polycrystalline diamonds
European Journal of Mineralogy (September 2013) 25 (3): 373-383

Abstract

A study of the boron-carbon-nitrogen system was carried out to synthesize new materials and examine phase relations. Crystalline graphite- and diamond-like BCN phases were synthesized by thermobaric treatment of mixtures of boron with carbon nitride or melamine powders. These BCN phases crystallized in the basic lattice of boron nitride with statistically distributed carbon atoms. New structural modifications were discovered by studying the kinetics of phase formation. The hexagonal lattice of a graphite-like phase is transformed by a diffusionless mechanism into a cubic structure at pressures of around 6.5 GPa. A diamond-like BCN phase was synthesized in the form of individual crystals or polycrystalline aggregates. The microstructure of these aggregates is comparable to natural and synthetic carbonado-type diamond. The obtained results argue in favour of the hypothesis that natural carbonados formed in the Earth's mantle.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 25
Serial Issue: 3
Title: Features of the formation of cubic BCN phases in comparison with natural and synthetic polycrystalline diamonds
Affiliation: Russian Academy of Sciences, Institute for High Pressure Physics, Moscow, Russian Federation
Pages: 373-383
Published: 201309
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
References: 36
Accession Number: 2013-083989
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Institute of Geology, RUS, Russian Federation
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201349
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