A Review of Tribological Coatings for Control Drive Mechanisms in Space Reactors
Tribological coatings must provide lubrication for moving components of the control drive mechanism for a space reactor and prevent seizing due to friction or diffusion welding to provide highly reliable and precise control of reflector position over the mission lifetime. Several coatings were evaluated based on tribological performance at elevated temperatures and in ultrahigh vacuum environments. Candidates with proven performance in the anticipated environment are limited primarily to disulfide materials. Irradiation data for these coatings is nonexistent. Compatibility issues between coating materials and structural components may require the use of barrier layers between the solid lubricant and structural components to prevent deleterious interactions. It would be advisable to consider possible lubricant interactions prior to down-selection of structural materials. A battery of tests was proposed to provide the necessary data for eventual solid lubricant/coating selection.
- Research Organization:
- Bettis Atomic Power Laboratory (BAPL), West Mifflin, PA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- DE-AC12-00SN39357
- OSTI ID:
- 884665
- Report Number(s):
- B-MT(SPME)-18; TRN: US0603656
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
22 GENERAL STUDIES OF NUCLEAR REACTORS
BUILDING MATERIALS
COATINGS
COMPATIBILITY
DIFFUSION WELDING
DISULFIDES
FRICTION
IRRADIATION
LIFETIME
LUBRICANTS
LUBRICATION
PERFORMANCE
SOLID LUBRICANTS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
NRPCT