Abstract

The optical characterization of chromium black coatings prepared by electrodeposition at CENG (J. Spitz) is presented. The preparation and the structural characterization of the deposits have been reported in the first part of this paper. The interest of performing measurements of hemispherical reflectivity versus angle of incidence is emphasized. The optical techniques are described. The spectral selectivity of these coatings is determined, discussed and compared to other blacks according to their structure, within the photothermal conversion of solar energy.

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