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

Active Publication Date: 2017-06-23
BEIHANG UNIV
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Problems solved by technology

[0006] However, metal particle clusters are prone to oxidation and diffusion at high temperatures, resulting in a decrease in the optical properties of the coating or even failure.

Method used

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  • Solar spectrum selective absorption coating and preparation method thereof
  • Solar spectrum selective absorption coating and preparation method thereof

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Embodiment Construction

[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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Abstract

The invention provides a solar spectrum selective absorption coating. A heat-absorbing body base material is a polished stainless steel sheet. The first layer is an infrared reflection layer, the second layer is an absorption layer, and the third layer is an antireflection layer. The preparation method of the solar spectrum selective absorption coating comprises the following steps that firstly, the first infrared reflection layer is prepared; secondly, a first metalloid sub-layer of the second layer is prepared, and a second quasi-medium sub-layer of the second layer is prepared; and thirdly, the third SiO2 antireflection layer is prepared, and thus the coating is prepared. The solar spectrum selective absorption coating provided by the invention has the characteristics of high absorptivity in the visible-near infrared band and low emissivity in the infrared band and has good high-temperature heat stability and cold-hot circulating stability. The preparation technique of the coating is simple, operation is convenient, control is easy, and the production cost is obviously reduced. The solar spectrum selective absorption coating is suitable for high-temperature solar heat collection pipes.

Description

[0001] Technical field: [0002] The invention provides a solar spectrum selective absorption coating and a preparation method thereof, specifically relates to a high-temperature solar spectrum selective absorption coating and a preparation technology thereof, and belongs to the technical field of solar light-to-heat conversion. [0003] Background technique: [0004] The solar spectrum selective absorption coating has high absorption in the solar spectrum (0.3-2.5 μm) and low emission in the mid-to-far infrared band (>2.5 μm). It is a functional film that converts sunlight energy into heat energy. [0005] With the continuous development of demand and technology, solar thermal utilization is gradually developing from solar water heaters for low-temperature applications (≤100°C) to solar thermal power generation for medium-high temperature applications (350°C-600°C). The currently used medium and high temperature solar spectrum selective absorption coating, the absorption la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16C23C14/06C23C14/10C23C14/34F24J2/48
Inventor 王聪宁玉平王文文孙莹宋平满红亮张翼麟代蓓蓓
Owner BEIHANG UNIV
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