Polymer precursor for silicon carbide/aluminum nitride ceramics
US5229468A · kind A · utility
11Cited by
2References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Feb 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A block copolymer is prepared by reacting an aluminum-nitrogen polymer and a silazane polymer at a temperature not greater than 400.degree. C. Block copolymers containing alkenyl or alkynyl groups can be crosslinked by supplying energy to generate free radicals. An AlN/SiC containing ceramic is formed by pyrolyzing the crosslinked block copolymer in a nonoxidizing atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.