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Crystallization behavior of polymer-derived Si–B–C–N ceramics in a high-pressure nitrogen environment

Published online by Cambridge University Press:  31 January 2011

Y. Cai ,
A. Zimmermann ,
S. Prinz  and
F. Aldinger
Y. Cai
Affiliation:
Max-Planck-Institut für Metallforschung and Institut für Nichtmetallische Anorganische Materialien, Universität Stuttgart, Pulvermetallurgisches Laboratorium, Heisenbergstrasse 3, 70569 Stuttgart, Germany
A. Zimmermann
Affiliation:
Max-Planck-Institut für Metallforschung and Institut für Nichtmetallische Anorganische Materialien, Universität Stuttgart, Pulvermetallurgisches Laboratorium, Heisenbergstrasse 3, 70569 Stuttgart, Germany
S. Prinz
Affiliation:
Max-Planck-Institut für Metallforschung and Institut für Nichtmetallische Anorganische Materialien, Universität Stuttgart, Pulvermetallurgisches Laboratorium, Heisenbergstrasse 3, 70569 Stuttgart, Germany
F. Aldinger
Affiliation:
Max-Planck-Institut für Metallforschung and Institut für Nichtmetallische Anorganische Materialien, Universität Stuttgart, Pulvermetallurgisches Laboratorium, Heisenbergstrasse 3, 70569 Stuttgart, Germany
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Abstract

This communication presents the effects of nitrogen pressure on the crystallization behavior of Si3.0B1.1C5.3N3.0 ceramics annealed at 1800 °C for 3 h. Transmission electron microscopy observation reveals that increasing nitrogen pressure results in the retardation of the crystallization process. Besides SiC and Si3N4 nanocrystals, individual large crystallites were also detected. These crystals were composed only of Si and N, and they possessed hexagonal structure with lattice parameters a = 0.737 nm and c = 0.536 nm. Crystallites of this novel phase were more frequently found with increased nitrogen pressure.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 17 , Issue 11 , November 2002 , pp. 2765 - 2767
Copyright
Copyright © Materials Research Society 2002

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References

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