A Novel Polymeric Organosilazane Precursor to Si3N4/SiC Ceramics.
Abstract
The action of basic catalysts such as KH on the ammonolysis product of CH3SiHCl2,CH3SiHNHx, results in formation of polysilazanes of intermediate molecular weight (800-2000). Pyrolysis of these polysilazanes gives ceramic materials, which appear to be mixtures pf Si3N4, SiC and C, in yields of 80-85%. Preliminary experiments aimed at the preparation of ceramic bars, fibers and powder composites are described. Originator-supplied key words include: Silicon nitrate, Polysilazanes, Dichlorosilane, and Ceramics.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 06, 1985
- Accession Number
- ADA150748
Entities
People
- D. Seyferth
- G. H. Wiseman
Organizations
- Massachusetts Institute of Technology