Preparation of Fine-Grained SiC Ceramics from Pyrolyzed Polycarbosilane

Preparation of Fine-Grained SiC Ceramics from Pyrolyzed Polycarbosilane

Dense, (> 99% of theoretical) fine-grained SiC ceramics were fabricated by a hot-pressing technique using very fine, crystalline SiC powders made from polycarbosilane. The grain sizes were {approx} 0.3 or 0.7 {mu}m when they were hot-pressed at 1,800{degree}C with Al or at 2,050{degree}C with AlN...

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Veröffentlicht in:Advanced Ceramic Materials 1988-03, Vol.3 (2), p.177-179
Hauptverfasser: KODAMA, HIRONORI, MIYOSHI, TADAHIKO
Format: Artikel
Sprache:eng
Schlagworte:
360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication
360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies
CARBIDES
CARBON COMPOUNDS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
FABRICATION
GRAIN SIZE
HOT PRESSING
INFORMATION
MATERIALS SCIENCE
MATERIALS WORKING
MEASURING METHODS
MICROSTRUCTURE
NUMERICAL DATA
POWDERS
PRESSING
SCATTERING
SILICON CARBIDES
SILICON COMPOUNDS
SIZE
X-RAY DIFFRACTION
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Beschreibung
Zusammenfassung:Dense, (> 99% of theoretical) fine-grained SiC ceramics were fabricated by a hot-pressing technique using very fine, crystalline SiC powders made from polycarbosilane. The grain sizes were {approx} 0.3 or 0.7 {mu}m when they were hot-pressed at 1,800{degree}C with Al or at 2,050{degree}C with AlN, respectively. Fabrication processes, the characteristics of the synthesized starting SiC powders, and the microstructures and properties of the SiC ceramics were investigated.
ISSN:0883-5551
1551-2916
DOI:10.1111/j.1551-2916.1988.tb00195.x