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Nickel pigmented anodized aluminium as solar selective absorbers |
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| Authors: | J Salmi J-P Bonino R S Bes |
| Affiliation: | (1) Laboratoire de Chimie des matériaux Inorganiques et Energétiques, ESA CNRS no. 5070, Université Paul Sabatier, 31062 Toulouse Cedex, France;(2) Laboratoire de Chimie des matériaux Inorganiques et Energétiques, ESA CNRS no. 5070, Université Paul Sabatier, 31062 Toulouse Cedex, France |
| Abstract: | The effect of various impregnation parameters on the structural features and optical properties of solar absorbing nickel pigmented anodic alumina coatings has been studied. The impregnation starts from a threshold voltage. A correlation between microstructural features and the optical properties of these coatings has been established. Stable coating with low emissivity (0.14 at 70°C) and high solar absorptivity (>0.90) have been prepared by anodizing in a phosphoric acid solution. |
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