Selective absorption coating for solar energy vacuum tube and preparation method thereof

A technology for absorbing coating and vacuum tube, applied in coating, vacuum evaporation coating, metal material coating process and other directions, can solve the problems of high production environment requirements, complex preparation method, low production efficiency, etc., and achieves low cost and method. Simple and easy to implement, high production efficiency

Inactive Publication Date: 2019-01-15
JIANGSU JINGZHAN ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the solar energy selective absorbing coatings in the prior art have complex preparation methods, high requirements on the production environment, low production efficiency and long cycle, and high input costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A selective absorbing coating for solar vacuum tubes comprises an infrared reflective layer, an absorbing layer and an anti-reflection layer in sequence from the substrate to the surface.

[0020] The substrate can be made of stainless steel, the infrared reflective layer is a Mo film, and the absorbing layer is ZrO 2 and a cermet layer of TiN, and the anti-reflection layer is a TiN film.

[0021] Wherein, in the absorbing layer, ZrO 2 The content is about 25wt%.

[0022] The specific preparation method is as follows:

[0023] (1) Select stainless steel as the substrate, ultrasonically clean the substrate with hydrochloric acid solution (hydrochloric acid: deionized water volume ratio = 1:5) for 10 minutes, and then ultrasonically clean it with ammonia solution (ammonia water: deionized water volume ratio = 1:5) for 10 minutes , and finally washed with deionized water, and dried in a 50°C drying oven for 30 minutes.

[0024] (2) Place the treated substrate in a magn...

Embodiment 2

[0028] A selective absorbing coating for solar vacuum tubes comprises an infrared reflective layer, an absorbing layer and an anti-reflection layer in sequence from the substrate to the surface.

[0029] The substrate can be made of stainless steel, the infrared reflective layer is a Mo film, and the absorbing layer is ZrO 2 and a cermet layer of TiN, and the anti-reflection layer is a TiN film.

[0030] Wherein, in the absorbing layer, ZrO 2 The content is about 40wt%.

[0031] The specific preparation method is as follows:

[0032] (1) Select stainless steel as the substrate, ultrasonically clean the substrate with hydrochloric acid solution (hydrochloric acid: deionized water volume ratio = 1:5) for 10 minutes, and then ultrasonically clean it with ammonia solution (ammonia water: deionized water volume ratio = 1:5) for 10 minutes , and finally washed with deionized water, and dried in a 50°C drying oven for 30 minutes.

[0033] (2) Place the treated substrate in a magn...

Embodiment 3

[0037] A selective absorbing coating for solar vacuum tubes comprises an infrared reflective layer, an absorbing layer and an anti-reflection layer in sequence from the substrate to the surface.

[0038] The substrate can be made of stainless steel, the infrared reflective layer is a Mo film, and the absorbing layer is ZrO 2 and a cermet layer of TiN, and the anti-reflection layer is a TiN film.

[0039] Wherein, in the absorbing layer, ZrO 2 The content is about 30wt%.

[0040] The specific preparation method is as follows:

[0041] (1) Select stainless steel as the substrate, ultrasonically clean the substrate with hydrochloric acid solution (hydrochloric acid: deionized water volume ratio = 1:5) for 10 minutes, and then ultrasonically clean it with ammonia solution (ammonia water: deionized water volume ratio = 1:5) for 10 minutes , and finally washed with deionized water, and dried in a 50°C drying oven for 30 minutes.

[0042] (2) Place the treated substrate in a magn...

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Abstract

The invention discloses a selective absorption coating for a solar energy vacuum tube and a preparation method thereof. The coating comprises, from a substrate to the surface, an infrared reflection layer, an absorption layer and a reflection reducing layer. The infrared reflection layer is a Mo film. The absorption layer is a metal ceramic coating of ZrO2 and TiN. The reflection reducing layer isa TiN film. The coating has excellent optical performance. The megnetron sputtering technology is adopted for the preparation method. The method is simple and easy to conduct. Production efficiency is high, the cost is low, and the method is worth popularization.

Description

technical field [0001] The invention belongs to the field of solar vacuum tube preparation, and in particular relates to a selective absorption coating for a solar vacuum tube and a preparation method thereof. Background technique [0002] Solar energy is the energy produced by the fusion of internal hydrogen atoms to release huge nuclear energy, which is the radiant energy from the sun. Most of the solar energy required by human beings comes directly or indirectly from the sun. Plants release oxygen and absorb carbon dioxide through photosynthesis, and convert solar energy into chemical energy and store it in plants. However, due to its relatively low energy density after reaching the earth, it brings certain difficulties to large-scale development and utilization, so it is necessary to increase its energy density through solar energy conversion. Solar thermal power generation is one of the core technologies of solar energy conversion and has broad market prospects. Solar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/08C23C14/16C23C14/35F24S70/25
CPCC23C14/0641C23C14/083C23C14/165C23C14/35
Inventor 芮唐明黄华叶
Owner JIANGSU JINGZHAN ENERGY TECH CO LTD
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