A new solar spectral selective absorbing coating of SS-(Fe_3O_4)/Mo/ TiZrN/TiZrON/SiON for high temperature application

摘要

In this study, a solar spectral selective absorbing coating of SS-(Fe_3O_4)/Mo/TiZrN/TiZrON/SiON exhibiting an absorptance of 0.95 and an emittance of 0.08 at 80 ℃ is reported. The structure and morphology of each layer were investigated by X-ray and Fourier transform infrared spectroscopic analyses. After heat treatment at 500 C for 300 h in vacuum, the values of absorptance and emittance became 0.92 and 0.10 (at 80 ℃), respectively. Moreover root mean square roughness of the coating measured by atomic force microscopy increased to 8.14 nm from 4.79 nm, indicating good thermal stability at 500 ℃.