Crystallization Kinetics of Cubic Boron Nitride in the B-N-Mg-H-F System

Crystallization Kinetics of Cubic Boron Nitride in the B-N-Mg-H-F System

The kinetics of the h-BN - > c-BN transformation in a mixture of composition 78% h-BN + 5% NH4F + 2% B + 15% Mg are studied at 5 GPa and temperatures from 1670 to 1910K. The activation energy of c-BN formation, temperature-dependent reaction rate constant, strength of the forming c-BN particles,...

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Veröffentlicht in:Inorganic materials 2005-07, Vol.41 (7), p.713-715
Hauptverfasser: Shipilo, V. B., Ignatenko, O. V., Anichenko, N. G., Azarko, I. I.
Format: Artikel
Sprache:eng
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Zusammenfassung:The kinetics of the h-BN - > c-BN transformation in a mixture of composition 78% h-BN + 5% NH4F + 2% B + 15% Mg are studied at 5 GPa and temperatures from 1670 to 1910K. The activation energy of c-BN formation, temperature-dependent reaction rate constant, strength of the forming c-BN particles, and density of paramagnetic defects in c-BN are evaluated.
ISSN:0020-1685
1608-3172
DOI:10.1007/s10789-005-0196-8