Claims
- 1. A method of inhibiting the decomposition of a carbon-base material during high temperature exposure to air comprising the steps of
- preparing a slurry of nickel powders and silicon powders containing about 60 w/o to about 90 w/o silicon in a nitrocellulose lacquer,
- spraying said slurry onto a surface of the carbon-base material to a thickness between about 25 mg/cm.sup.2 to about 100 mg/cm.sup.2 in an air environment to coat the same,
- drying the coated carbon-base material in air, and
- vacuum-sintering the coated carbon-base material at 1200.degree. C. for one hour and then vacuum sintering at 1325.degree. C. for one hour.
- 2. A method of coating a carbon-base material comprising the steps of
- spraying a slurry containing nickel powders and silicon powders onto said carbon-base material in an air environment,
- placing said slurry covered carbon-base material in a vacuum, and
- sintering said slurry covered carbon-base material in said vacuum by heating the same to 1200.degree. C. for one hour and then heating said slurry covered carbon-base material to 1325.degree. C. for one hour.
- 3. A method as claimed in claim 2 wherein the slurry contains about 60 w/o to about 90 w/o silicon in a nitrocellulose lacquer.
- 4. A method as claimed in claim 2 wherein the carbon-base material is covered with the nickel-silicon slurry to a thickness between about 25 mg/cm.sup.2 to about 100 mg/cm.sup.2.
- 5. A carbon-base material coated in accordance with the method of claim 2.
ORIGIN OF THE INVENTION
The invention described herein was made by employees of the U.S. Government and may be manufactured and used by or for the Government for governmental purposes without the payment of any royalties thereon or therefor.
US Referenced Citations (10)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0145180 |
Nov 1981 |
JPX |
0064372 |
Apr 1983 |
JPX |