Optical Property Evaluation of Next Generation Thermal Control CoatingsNext generation white thermal control coatings were developed via the Small Business Innovative Research program utilizing lithium silicate chemistry as a binder. Doping of the binder with additives yielded a powder that was plasma spray capable and that could be applied to light weight polymers and carbon-carbon composite surfaces. The plasma sprayed coating had acceptable beginning-of-life and end-of-live optical properties, as indicated by a successful 1.5 year exposure to the space environment in low Earth orbit. Recent studies also showed the coating to be durable to simulated space environments consisting of 1 keV and 10 keV electrons, 4.5 MeV electrons, and thermal cycling. Large scale deposition was demonstrated on a polymer matrix composite radiator panel, leading to the selection of the coating for use on the Gravity Recovery And Interior Laboratory (GRAIL) mission.
Jaworske, Donald A. (NASA Glenn Research Center Cleveland, OH, United States)
Deshpande, Mukund S. (Applied Material Systems Engineering, Inc. Schaumburg, IL, United States)
Pierson, Edward A. (Lockheed Martin Corp. Akron, OH, United States)
June 5, 2015
June 28, 2010
Composite MaterialsChemistry And Materials (General)
Meeting: National Space & Missile Materials Symposium