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Precipitation of carbon nanoparticles encapsulating silicon carbide from molten oxide

Published online by Cambridge University Press:  31 January 2011

Mamoru Mitomo ,
Chong-Min Wang  and
Hideyuki Emoto
Mamoru Mitomo
Affiliation:
National Institute for Research in Inorganic Materials, Tsukuba-shi, Ibaraki 305, Japan
Chong-Min Wang
Affiliation:
Department of Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015
Hideyuki Emoto
Affiliation:
Research Center, Denki Kagaku Kogyo K. K., Machida, Tokyo 194, Japan
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Abstract

A kind of fullerenes, carbon nanoparticle encapsulating β–SiC grain, was precipitated during cooling Al2O3–Y2O3 –CaO oxide melt containing SiC and C from 2023 K. The SiC grains with a diameter of 5–20 nm were covered with 2–4 graphitic carbon layers with the spacing of 0.34 nm as revealed by high resolution transmission electron microscopy. The result provides a new preparation method of carbon nanoparticles through a ceramic process, which contrasts with previous physical methods applying electric arc discharge or electron irradiation in vacuum.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 8 , August 1998 , pp. 2039 - 2041
Copyright
Copyright © Materials Research Society 1998

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