RESEARCH AND DEVELOPMENT ON ELECTRODEPOSITED COATINGS FOR HIGH TEMPERATURE EXPERIMENTAL SOLID PROPELLANT ROCKET NOZZLES. Sixth Quarterly Report, September 30-December 298 1962
Activities in a program to further develop and adapt an electrodeposited Cr-base cermet for protection of solid propellant rocket nozzles. A group of Cu samples were coated with compositions such as Cr, Cr-- ZrB/sub 2/, Cr-- ZrB/sub 2/ on graphite, and Cr-- ZrB/sub 2/ on a proprietary dispersant to determine the particle volume and distribution in the cermet. Results of x-ray analyses of these samples indicate that specimens coated in baths containing the dispersing agent contained more ceramic particles than those coated in conventional baths. It appears that more ceramic particles can be introduced in the coating by mechanical stirring of the bath, and use of increased amounts of dispersant and ceramic materials. The relations of ceramic particle concentration and the coating resistance to hightemperature corrosion was not established. Design of an O/sub 2/- H/sub 2/ rocket motor to operate at 600 psi is reported. The motor was calibrated to establish the throttle settings to obtain various chamber pressures and flame temperatures. Tests were also conducted to increase nozzle life. (J.R.D.)
- Research Organization:
- Value Engineering Co., Inc., Alexandria, Va.
- NSA Number:
- NSA-17-013846
- OSTI ID:
- 4735610
- Report Number(s):
- NP-12541
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CERAMICS
CERMETS
CHROMIUM ALLOYS
COMBUSTION
COPPER
CORROSION PROTECTION
DISPERSIONS
DISTRIBUTION
ELECTRODEPOSITION
GRAPHITE
HIGH TEMPERATURE
HYDROGEN
INTERMETALLIC COMPOUNDS
MOTORS
NOZZLES
OXYGEN
PARTICLES
PLANNING
PRESSURE
PROPULSION
ROCKETS
SPACE APPLICATIONS AND TECHNOLOGY
STANDARDS
TEMPERATURE
X RADIATION
ZIRCONIUM ALLOYS