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TiCN-based high-temperature-resisting solar energy selective absorbing coating

An absorbing coating and selective technology, applied in the coating, metal material coating process, ion implantation plating, etc., can solve the problems of low divergence rate, high temperature and other problems, achieve low cost and improve oxidation resistance Performance, the effect of increasing the service life

Active Publication Date: 2019-01-29
东莞市鑫硕机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solar selective absorption spectrum has high absorption efficiency in the wavelength range of 300nm-2500nm, but at the same time it is difficult to solve the contradiction between high temperature, high absorption rate and low divergence rate

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] According to the solar energy selective absorbing coating that a kind of parameter among them of the experimental procedure of concrete implementation comes out, wherein TiCN absorbing layer thickness is 80nm, Al 2 o 3 The thickness of the anti-reflection layer is 80nm. According to the above preparation method, it is very possible to solve the problem of short life of the heat collector in a high temperature environment. The solar selective absorption coating of the present invention starts from the selection of materials to the design of the structure to solve practical problems. The specific oxidation steps are as follows:

[0030] (1) Place the above-mentioned solar selective absorbing coating in the middle of the tubular muffle furnace to keep the atmospheric state.

[0031] (2) According to the structure and properties of the solar selective absorbing coating described above, the heating rate was set at 3°C / min, the temperature was raised to 500°C, and kept for ...

Embodiment 2

[0035] According to the solar energy selective absorption coating obtained according to the experimental procedure of specific implementation, wherein the thickness of the TiCN absorption layer is 90nm, Al 2 o 3The thickness of the anti-reflection layer is 100nm. According to the above preparation method, it is very possible to solve the problem of short service life of the heat collector in a high temperature environment. The specific oxidation steps are as follows:

[0036] (1) Place the above-mentioned solar selective absorbing coating in the middle of the tubular muffle furnace to keep the atmospheric state.

[0037] (2) According to the structure and properties of the solar selective absorbing coating described above, the heating rate was set at 3°C / min, the temperature was raised to 600°C, and kept for 2h.

[0038] (3) After 2h annealing, the cooling rate is 5°C / min to cool down to room temperature.

[0039] In this implementation case, the performance test of the co...

Embodiment 3

[0041] The solar energy selective absorbing coating obtained according to the specific experimental steps, wherein the thickness of the TiCN absorbing layer is 80nm, and the thickness of the AlON anti-reflection layer is 120nm. According to the above preparation method, it is very possible to solve the problem of short service life of the heat collector in a high temperature environment. The specific oxidation steps are as follows:

[0042] (1) Place the above-mentioned solar selective absorbing coating in the middle of the tubular muffle furnace to keep the atmospheric state.

[0043] (2) According to the structure and properties of the solar selective absorbing coating described above, the heating rate was set at 3°C / min, the temperature was raised to 700°C, and kept for 2h.

[0044] (3) After 2h annealing, the cooling rate is 5°C / min to cool down to room temperature.

[0045] In this implementation case, the performance test of the coating after annealing in air atmospher...

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Abstract

The invention relate to a TiCN-based high-temperature-resisting solar energy selective absorbing coating. The coating sequentially comprises a base body, an absorbing layer and an anti-reflection layer from bottom layer to surface, the medium frequency magnetron sputtering technology is adopted for coating preparation, the absorbing layer is a TiCN coating with high temperature resistance, the anti-reflection layer is an AlON layer with is resistant to corrosion and high in hardness and has a protection effect on the base body and the absorbing layer, the TiCN absorbing layer is of a nanometercomposite structure, in other words, nanocrystalline TiN is embedded into amorphous C, the amorphous C in the coating exists in the mode of mixing of SP2 and SP3 hybrid bond energy, and the anti-reflection layer is the AlON layer which is resistant to high temperature oxidation and is of an amorphous structure, and is high in transmittance and low in extinction coefficient. After the coating is annealed for 2h in the air atmosphere at the temperature of 800 DEG C, the absorbing rate is 0.92 or above, and the emissivity is 0.12 or below. The coating can keep good stability in the high-temperature severe environment, and the coating has the high absorbing rate and the low emissivity, and is widely applied in heat collectors.

Description

technical field [0001] The invention relates to a solar energy absorbing coating, in particular to a TiCN-based high temperature resistant solar selective absorbing coating, which belongs to the technical field of coating preparation. technical background [0002] Solar energy is an inexhaustible clean energy, and the effective use of solar energy is a huge impetus to improve the national economy. But solar energy is also a low-quality, low-energy-density energy source, and the conversion efficiency becomes a barrier for solar energy utilization. Therefore, with the promotion of research, solar selective absorbing coatings came into being. As the core part of photoelectric-to-thermal conversion of solar collectors, the solar spectrum selective absorption coating has aroused many researchers' research upsurge in order to solve the problems of how to absorb efficiency and reduce the divergence rate. Solar selective absorption spectroscopy has high absorption efficiency in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/35F24S70/225F24S70/30
CPCC23C14/0036C23C14/0664C23C14/0676C23C14/352
Inventor 邹长伟刘贵昂梁枫田灿鑫
Owner 东莞市鑫硕机械科技有限公司