흑색 코발트 태양 선택흡수막의 열퇴화
Thermal Degradation of Black Cobalt Solar Selective Coatings
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Black cobalt solar selective coatings were prepared by using an electroplating method. The changes in the optical properties of the black cobalt selective coating due to thermal degradation were analyzed by using the Auger electron spectroscopy (AES) and spectrophotometer. The black cobalt selective coating was prepared on a copper substrate by using a synthesized electrolyte with CoCl2 and KSCN at a current density of 0.5A/dm2 for 45s 60s. Its optical properties were a solar absorptance () of the order of 0.80 0.84 and a thermal emittance () of 0.01. From the AES depth profile analysis of heated sample, thermal degradation of the black cobalt selective coating heated for 33 hours at temperature of 350 0C occurred primarily due to interdiffusion at interface of cobalt and copper substrate. This results were predictable that the decreases due to the thermal oxidation and diffusion.
Abstract
Black cobalt solar selective coatings were prepared by using an electroplating method. The changes in the optical properties of the black cobalt selective coating due to thermal degradation were analyzed by using the Auger electron spectroscopy (AES) and spectrophotometer. The black cobalt selective coating was prepared on a copper substrate by using a synthesized electrolyte with CoCl2 and KSCN at a current density of 0.5A/dm2 for 45s 60s. Its optical properties were a solar absorptance () of the order of 0.80 0.84 and a thermal emittance () of 0.01. From the AES depth profile analysis of heated sample, thermal degradation of the black cobalt selective coating heated for 33 hours at temperature of 350 0C occurred primarily due to interdiffusion at interface of cobalt and copper substrate. This results were predictable that the decreases due to the thermal oxidation and diffusion.
참고문헌 (13)
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