Plasma-sprayed coatings increase cooling by thermal radiation. Coating of zirconium diboride on tungsten or molybdenum increases emissivity of surface to more than 0.6 at 2,000 degree C. Applied by plasma-arc spraying after surface cleaned and roughened to ensure adhesion.
High-Emissivity Coatings For High-Temperature Surfaces
NASA Tech Briefs ; 12 , 5
1988-05-01
Miscellaneous
No indication
English
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