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Crystalline Boron Carbide Encapsulated Into Carbon Nanoclusters from Arc-Discharge Soot

Published online by Cambridge University Press:  15 February 2011

Supapan Seraphin ,
Dan Zhou  and
Jun Jiao
Supapan Seraphin
Affiliation:
Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721
Dan Zhou
Affiliation:
Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721
Jun Jiao
Affiliation:
Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721
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Abstract

Using a boron-containing composite anode in an arc discharge, we found in the soot on the reactor walls graphitic multiwalled carbon clusters that contained boron carbide crystals, as identified by high resolution transmission electron microscopy (HRTEM), electron energy loss spectroscopy (EELS), and electron diffraction. The encapsulants are compounds of the lightest element that has yet been encapsulated, and the first of the non-metallic. The multiwalled graphitic cages partially encapsulating the boron compounds have rarely been observed in the soot of arc-discharge material produced from anodes not containing boron. We explain this exception by the known tendency of boron to catalyze graphitization.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 359: Symposium G – Science and Technology of Fullerene Materials , 1994 , 47
Copyright
Copyright © Materials Research Society 1995

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References

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