Solar spectrum selective absorption coating and preparation method thereof
A technology for absorbing coatings and solar spectra, applied in coatings, solar thermal devices, metal material coating processes, etc., can solve the problems of metal particle cluster oxidation, diffusion, failure, and degradation of optical properties of coatings, and achieve high Effect of absorption rate, ease of control, and good high-temperature thermal stability
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[0027] The following is SS / Mo / ZrSiN / ZrSiON / SiO 2 The preparation of is illustrated as an example, and is only used to illustrate the present invention, but not to limit the present invention.
[0028] See figure 1 As shown, a solar spectrum selective absorption coating of the present invention is prepared by magnetron sputtering technology. The surface of the heat absorbing body substrate forms a three-layer film structure from the bottom to the top, and the composition and thickness of each layer are as follows: The material is a polished stainless steel substrate, and the first layer is a 180nm Mo layer infrared reflection layer. The second layer is the absorption layer, including two sub-layers (the first sub-layer and the second sub-layer) of the metal-like layer and the dielectric-like layer, the metal-like layer is ZrSiN, its thickness is 57nm, the atomic percentage of Zr, Si, N They are 29.43%, 40.05%, and 30.51%, respectively. The dielectric-like layer is ZrSiON with...
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