Preliminary study of a solar selective coating system using black cobalt oxide for high temperature solar collectorsBlack cobalt oxide coatings were deposited on thin layers of silver or gold which had been deposited on oxidized stainless steel substrates. The reflectance properties of these coatings were measured at various thicknesses of cobalt oxide for integrated values of the solar and infrared spectrum. The values of absorptance and emittance were calculated from the measured reflectance values before and after exposure in air at 650 C for 1000 hours. Also, these cobalt oxide/noble metal/oxide diffusion barrier coatings have absorptances greater than 0.90 and emittances of approximately 0.20 even after about 1000 hours at 650 C.
Document ID
19800051330
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mcdonald, G. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1980
Subject Category
Metallic Materials
Meeting Information
Meeting: International Conference on Metallurgical Coatings