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Solar absorbing coating with good thermal stability in air and preparation method thereof

A technology of solar energy absorption and thermal stability, which is applied in the direction of solar thermal power generation, coating, metal material coating technology, etc., can solve the problems of poor thermal stability, improve the strength of alloys, inhibit the formation of compound phases, and achieve good long-term thermal stability. The effect of stabilizing performance

Active Publication Date: 2021-07-20
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently reported high-temperature solar absorbing coatings have good thermal stability in vacuum, but their thermal stability in air is poor

Method used

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  • Solar absorbing coating with good thermal stability in air and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 as figure 1 As shown, the solar absorbing coating with good thermal stability in air, the coating is sequentially composed of a heat absorber substrate composed of a polished stainless steel sheet with a roughness value of 1.5 nm, and an infrared reflective layer composed of metal Mo with a thickness of 40 nm , a primary absorption layer composed of TiSiCrZrHfN with a thickness of 38 nm, a secondary absorption layer composed of TiSiCrZrHfNO with a thickness of 35 nm and Al 2 o 3 Composed of an anti-reflection layer with a thickness of 50 nm. The main absorption layer refers to the nitride of TiSiCrZrHf high-entropy alloy prepared by smelting method using metal Ti, Si, Cr, Zr, Hf in equimolar ratio; the secondary absorption layer refers to the use of metal Ti, Si, Cr, Nitrogen oxides of TiSiCrZrHf high-entropy alloy prepared by Zr and Hf by melting method.

[0027] Among them: TiSiCrZrHf high-entropy alloy refers to put metal Ti, Si, Cr, Zr, Hf in equal mola...

Embodiment 2

[0035] Example 2 A solar absorbing coating with good thermal stability in air, the coating is successively composed of a heat absorber substrate composed of a polished stainless steel sheet with a roughness value of 0.5 nm, and an infrared reflective layer with a thickness of 35 nm composed of metal Mo , TiSiCrZrHfN main absorption layer with a thickness of 25 nm, TiSiCrZrHfNO secondary absorption layer with a thickness of 25 nm and Al 2 o 3 The anti-reflection layer is formed with a thickness of 35 nm. The main absorption layer refers to the nitride of TiSiCrZrHf high-entropy alloy prepared by smelting method using metal Ti, Si, Cr, Zr, Hf in equimolar ratio; the secondary absorption layer refers to the use of metal Ti, Si, Cr, Nitrogen oxides of TiSiCrZrHf high-entropy alloy prepared by Zr and Hf by melting method.

[0036] Wherein: the TiSiCrZrHf high-entropy alloy is the same as in Example 1.

[0037] A method for preparing a solar absorbing coating with good thermal st...

Embodiment 3

[0044] Example 3 A solar absorbing coating with good thermal stability in air, the coating is successively composed of a heat absorber substrate composed of a polished stainless steel sheet with a roughness value of 3 nm, and an infrared reflective layer with a thickness of 70 nm composed of metal Mo , a primary absorption layer composed of TiSiCrZrHfN with a thickness of 55 nm, a secondary absorption layer composed of TiSiCrZrHfNO with a thickness of 50 nm and Al 2 o 3 Composed of an anti-reflection layer with a thickness of 70 nm. The main absorption layer refers to the nitride of TiSiCrZrHf high-entropy alloy prepared by smelting method using metal Ti, Si, Cr, Zr, Hf in equimolar ratio; the secondary absorption layer refers to the use of metal Ti, Si, Cr, Nitrogen oxides of TiSiCrZrHf high-entropy alloy prepared by Zr and Hf by melting method.

[0045] Wherein: the TiSiCrZrHf high-entropy alloy is the same as in Example 1.

[0046] A method for preparing a solar absorbin...

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Abstract

The present invention involves a solar absorption coating with good thermal stability in the air. The coating is composed of the main absorption layer, Tisicrzrzrzrhfno composition composed of infrared reflection layers, Tisicrzrzrzrzrzrzrzrhfno composed of polished stainless steel sheets.The secondary absorption layer and al 2 O 3 The composition of the reducing layer of the composition.The main absorption layer refers to the use of Tisicrzrhf high -entropy alloys that use the metal TI, Si, CR, ZR, and HF of Moorebi by Moorebi.ZR and HF are nitrogen oxides of Tisicrzrhf high entropy alloys prepared by melting legal.The invention also disclosed the preparation method of the coating.The preparation process of the present invention is simple and the cost is low. Under the conditions of the atmospheric quality factor AM1.5, the prepared coating is ≥0.94 and the emission rate ≤0.10;Essence

Description

technical field [0001] The invention relates to the technical field of high-temperature solar energy absorbing coatings for solar thermal power generation, in particular to a solar absorbing coating with good thermal stability in air and a preparation method thereof. Background technique [0002] Solar thermal power generation is an emerging energy application technology with the potential to become a base load power source, with huge potential. On October 10, 2018, China General Nuclear Power Group announced in Beijing that my country's first large-scale commercial trough solar thermal demonstration power plant, the CGN Delingha 50MW solar thermal demonstration project, was officially put into operation. The country of large-scale photothermal technology. However, the high-temperature collector tubes used in the CGN Delingha 50MW trough solar-thermal power generation demonstration project rely on imports. At present, domestic Xinjiang, Gansu, and Qinghai are planning to bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/06C23C14/08C23C14/16C23C14/35F24S70/25
CPCC23C14/0036C23C14/0641C23C14/0676C23C14/081C23C14/165C23C14/352F24S70/25Y02E10/40
Inventor 高祥虎刘刚
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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