Diffuse black plasma sprayed coatings

Details Diffuse black plasma sprayed coatings Diffuse black plasma sprayed coatings

1991-04-12

1993-01-05

Walsh, Donald P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428556, 428565, 428469, 428337, 428689, 427162, 427402, 427451, B22F 300, B32B 904

Patent

active

051769646

ABSTRACT:
The present invention resides in an optically black article comprising a substrate and an optically black coating adhered to the substrate. The coating has an absorptivity of at least about 0.92 and an emissivity of at least about 0.85, obtained by plasma spraying onto the substrate a composition comprising about 20% to about 50% by weight of a carbonyl metal and about 80% to about 50% by weight of a ceramic metal oxide. A preferred carbonyl metal is carbonyl iron. A preferred ceramic metal oxide is a yttria stabilized zirconia, having an average particle size in the range of about 10 microns to about 106 microns (140 mesh).

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