Thermal aging characteristics of CrNxOy solar selective absorber coating for flat plate solar thermal collector applications
作者： Liang Wu , Junhua Gao , Zhimin Liu , Lingyan Liang , Fei Xia
DOI: 10.1016/J.SOLMAT.2013.03.005
关键词:
摘要: A solar selective absorber coating of CrNxOy/SiO2 was prepared on Cu (Si) substrate using DC reactive magnetron sputtering technique. The coating exhibits a high absorptivity (α) of 0.947 and a low emissivity (ε) of 0.05 at 80° C. The spectral selectivity (α/ε) of the coating on Cu substrate is stable (0.930/0.073) even after heat-treatment at 278° C in air for 300h, but decreased (0.904/0.135) at 278° C for 600h. The determinants to govern the thermal stability were investigated by micro-Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) …
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