Preparation And Properties Of Black Cobalt Solar Absorber Surfaces

Michael G Hutchins; Paul J Wright; Peter D Grebenik

doi:10.1117/12.938327

24 September 1986 Preparation And Properties Of Black Cobalt Solar Absorber Surfaces

Michael G Hutchins, Paul J Wright, Peter D Grebenik

Proceedings Volume 0653, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V; (1986) https://doi.org/10.1117/12.938327
Event: 1986 International Symposium/Innsbruck, 1986, Innsbruck, Austria

Abstract

Different forms of spectrally selective black cobalt solar absorber surfaces have been prepared using direct electrodeposition and electrodeposition followed by chemical oxidation or thermal oxidation. The dependence of surface optical properties on the deposition process conditions has been studied. Compositional and microstructural properties have been examined using a range of surface analytical techniques. The effects of exposure of black cobalt surfaces in air at temperatures up to 500°C have been examined. Favourable conclusions are drawn for the performance of a CoO(OH) surface formed by chemical oxidation and for a fully oxidised cobalt metal film formed by thermal oxidation in air. In the latter case film thickness and surface microstructure are shown to have pronounced effects on the surface optical properties.

Citation Download Citation

Michael G Hutchins, Paul J Wright, and Peter D Grebenik "Preparation And Properties Of Black Cobalt Solar Absorber Surfaces", Proc. SPIE 0653, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V, (24 September 1986); https://doi.org/10.1117/12.938327

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