Vanadium-based high-temperature solar selective absorption coating and preparation method thereof

An absorbing coating and selective technology, applied in coating, metal material coating process, ion implantation plating, etc., can solve the problems of low process deposition rate, long production cycle, complex process, etc., and achieve fast sputtering rate , Reduce equipment cost and production cost, and the effect of simple preparation process

Inactive Publication Date: 2012-08-01
DONGGUAN CAMDA GENERATOR WORK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, processes such as double-target or multi-target co-sputtering and RF sputtering have low deposition rate, long production cycle, complicated process and high cost.

Method used

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  • Vanadium-based high-temperature solar selective absorption coating and preparation method thereof
  • Vanadium-based high-temperature solar selective absorption coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, a high-temperature solar energy selective absorption coating 100 is composed of three-layer films, the three-layer film includes a bottom infrared reflection layer 120 , a middle absorption layer 130 and a surface anti-reflection layer 140 . The bottom infrared reflection layer 120 is deposited on the surface of the substrate 110, and the substrate 110 is a stainless steel tube. The middle absorption layer 130 is deposited on the bottom infrared reflection layer 120 , and the surface anti-reflection layer 140 is deposited on the middle absorption layer 130 .

[0042] The bottom infrared reflection layer 120 is composed of a metal V (vanadium) film, and the thickness of the bottom infrared reflection layer 120 is 100-400 nm.

[0043] The intermediate absorption layer 130 includes a first sublayer 131 and a second sublayer 132, and the first sublayer 131 and the second sublayer 132 are both composed of V+SiO 2 In the film composition, the volume percentage ...

Embodiment 2

[0055] Embodiment 2, a high-temperature solar energy selective absorption coating 100 is composed of three layers of film, the three-layer film includes a bottom infrared reflection layer 120 , a middle absorption layer 130 and a surface anti-reflection layer 140 . The bottom infrared reflection layer 120 is deposited on the surface of the substrate 110, and the substrate 110 is a stainless steel tube. The middle absorption layer 130 is deposited on the bottom infrared reflection layer 120 , and the surface anti-reflection layer 140 is deposited on the middle absorption layer 130 .

[0056] The bottom infrared reflection layer 120 is composed of a metal V (vanadium) film, and the thickness of the bottom infrared reflection layer 120 is 100-400 nm.

[0057] The middle absorbing layer 130 includes a first sublayer 131 and a second sublayer 132, and the first sublayer 131 and the second sublayer 132 are both composed of V+Al 2 o 3 In the film composition, the volume percentage ...

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Abstract

The invention relates to a vanadium high-temperature solar selective absorption coating and a preparation method thereof. The selective absorption coating consists of three layers of film and comprises a bottom infrared reflection layer, an intermediate absorption layer and a surface anti-reflection layer, wherein the bottom infrared reflection layer is deposited on the surface of a substrate, the intermediate absorption layer is deposited on the bottom infrared reflection layer, and the surface anti-reflection layer is deposited on the intermediate absorption layer; and the bottom infrared reflection layer consists of a metal vanadium (V) film, the intermediate absorption layer comprises a first sub-layer and a second sub-layer, both the first and the second sub-layers respectively consist of a V + silicon dioxide (SiO2) film or a V + aluminum oxide (Al2O3) film, and the surface anti-reflection layer consists of a SiO2 film or an Al2O3 layer. The vanadium-based high-temperature solarselective absorption coating is stable in high temperature and has high absorption rate to the solar spectrum and low transmission rate. The preparation technique is simple and convenient to operate and easy to control, the sputtering speed is fast, the production period can be shortened, the process is stable, and the equipment cost and production cost can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of trough solar high-temperature thermal power generation, in particular to a vanadium-based high-temperature solar selective absorption coating and a preparation method thereof. Background technique [0002] Solar thermal power generation is an important technical approach for large-scale development and utilization of solar energy. At present, there are tower, trough, and dish systems, among which trough and tower systems are more commercially used, especially trough solar thermal power generation, which is the most popular so far. So far, it is the only mature technology in the world that has been commercialized for 20 years, and its cost is much lower than that of photovoltaic power generation. The energy storage system of the trough-type concentrating thermal power generation system can realize 24-hour operation. With the increase of scale, the cost of power generation is also very competitive. At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/08C23C14/16
Inventor 郑礼清沈剑山周福云谭卓鹏贺东枚
Owner DONGGUAN CAMDA GENERATOR WORK
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