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Formation of cubic C-BN by crystallization of nano-amorphous solid at atmosphere

Published online by Cambridge University Press:  31 January 2011

Bin Yao ,
L. Liu  and
W. H. Su
Bin Yao
Affiliation:
Department of Physics, Jilin University, Changchun 130023, People's Republic of China and State Key Lab of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
L. Liu
Affiliation:
Department of Physics, Jilin University, Changchun 130023, People's Republic of China
W. H. Su
Affiliation:
Department of Physics, Jilin University, Changchun 130023, People's Republic of China and International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
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Extract

An amorphous carbon-boron nitride (C-BN) solid was prepared by ball milling the mixture of graphite and hexagonal BN powders for a period of 120 h. After annealing the amorphous C-BN solid for 1 h at atmosphere in the temperature range from 800 to 900 K and then quenching it to room temperature, a small amount of cubic C-BN solid solutions with diamond-like structure, which belong to a high energy phase and can only be synthesized previously under high pressure and temperature (30 GPa, 2000 K), were observed in the annealed amorphous C-BN solid. The lattice constant of the cubic C-BN solid solution was 0.3587 nm, and its grain size was in the range of 10 to 50 nm.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 7 , July 1998 , pp. 1753 - 1756
Copyright
Copyright © Materials Research Society 1998

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