Structural ceramics derived from a preceramic polymer

Conference · Mon Oct 01 00:00:00 EDT 1990 · Ceramic Engineering and Science Proceedings; (USA)

OSTI ID:6152216

Semen, J; Loop, J G

Test pieces were uniaxially dry-pressed from formulations consisting of 20-30 wt pct polysilazane preceramic material and SiC and Si3N4 ceramic powders. Thermal crosslinking/pyrolysis of the molded pieces at temperatures well below normal powder sintering temperatures produced fully ceramic composites consisting of fully dense, submicrometer size, crystalline ceramic particles embedded in a highly nanoporous, amorphous Si-N-C ceramic matrix material. The mechanical and physical properties, and their relationship to the microstructure, of these materials are discussed.

• OSTI ID: 6152216
• Report Number(s): CONF-900160-; CODEN: CESPD
• Journal Information: Ceramic Engineering and Science Proceedings; (USA), Vol. 11; Conference: 14. annual conference on composites and advanced ceramics, Cocoa Beach, FL (USA), 14-17 Jan 1990; ISSN 0196-6219
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CERAMICS
MECHANICAL PROPERTIES
MICROSTRUCTURE
PHYSICAL PROPERTIES
SYNTHESIS
CHEMISTRY
ORGANOMETALLIC COMPOUNDS
POLYMERS
SILANES
SILICON CARBIDES
SILICON NITRIDES
CARBIDES
CARBON COMPOUNDS
CRYSTAL STRUCTURE
HYDRIDES
HYDROGEN COMPOUNDS
NITRIDES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
PNICTIDES
SILICON COMPOUNDS
360201* - Ceramics
Cermets
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360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties
360204 - Ceramics
Cermets
& Refractories- Physical Properties
400201 - Chemical & Physicochemical Properties