US 5354527
PROCESS FOR MAKING SILICON CARBIDE CERAMIC FIBERS
Assignee
CARBORUNDUM COMPANY, THE
Filed
Feb 21, 1992
Granted
Oct 11, 1994
Location
TUNAWANDA NY US
Abstract
A method for forming a polycrystalline ceramic fiber which comprises blending about 5 to about 25 weight percent polymer, about 70 to about 95 weight percent silicon carbide powder and greater than 1 weight percent sintering aid; forming a fiber from the blend; and sintering the formed fiber. Preferably, the sintering aid is boron carbide. In addition, the fiber is preferably pre-sintered at a first temperature of from about 1700° C. to 2300° C. and then subsequently sintered at a second temperature of approximately 2000° C. to about 2300° C.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Sep 28, 1992
Rescinded
Feb 7, 1994
Duration
1 year, 4 months
Inventor
- 1FRANCIS J. FRECHETTE
Record Details
- Patent number
- US 5354527
- Application
- 00783896
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
CARBORUNDUM COMPANY, THEBack to patent indexSource: USPTO 35 USC §181 secrecy order records