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Microstructures of pyrolytic carbon/silicon carbide mixtures Co-deposited in a bed of fluidized particles

Authors
Journal
Carbon
0008-6223
Publisher
Elsevier
Publication Date
Volume
13
Issue
1
Identifiers
DOI: 10.1016/0008-6223(75)90257-2

Abstract

Abstract The microstructures of pyrolytic carbon/silicon carbide mixtures codeposited in a bed of fluidized particles have been examined by transmission electron microscopy. In deposits containing about 10 per cent silicon by weight the microstructures are similar to those of pure carbons deposited under similar conditions with the silicon-carbide particles present as small single-crystal particles about 200 Å in dia distributed in the spherical carbon growth features. In deposits containing 16 to 34 weight per cent silicon the silicon-carbide particles are larger (about 1000 Å) and are distributed nonuniformly, clustered densely in 1 μm dia regions while adjacent regions contain no silicon-carbide particles at all.

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