Claims
- 1. A composition for use as a structural material in a high-temperature gaseous fluorine-containing environment, said composition consisting essentially of a carbon phase dispersed in lanthanum-hexaboride matrix with said carbon phase providing about 10-30 vol.% of the composition, said composition being characterized by being essentially resistant to thermal shock and fluorine corrosion at material surface temperatures greater than 1400.degree. K.
- 2. The composition claimed as in claim 1 wherein discontinuous carbon fibers provide up to 30 vol.% of the composition.
- 3. A supersonic expansion nozzle for a hydrogen-fluoride laser system formed of the composition claimed in claim 1.
Government Interests
This invention was made as a result of a contract with the U.S. Department of Energy.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3206279 |
Carnall |
Sep 1965 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
54-122301 |
Sep 1979 |
JPX |