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Ni-doped CuCoMnOx spinel structure solar selective absorption coating and preparation method

A spinel structure, selective absorption technology, applied in solar thermal power generation, coating, metal material coating technology, etc., to achieve excellent emissivity and absorption rate, stable application effect

Inactive Publication Date: 2020-08-11
广州珈鹏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for CuCoMnO prepared by magnetron sputtering x Coatings are not covered in the prior art

Method used

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  • Ni-doped CuCoMnOx spinel structure solar selective absorption coating and preparation method
  • Ni-doped CuCoMnOx spinel structure solar selective absorption coating and preparation method
  • Ni-doped CuCoMnOx spinel structure solar selective absorption coating and preparation method

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Experimental program
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Effect test

Embodiment 1

[0031] A Ni-doped CuCoMnO x The preparation method of the spinel structure solar energy selective absorption coating comprises the following steps:

[0032] (1) Substrate pretreatment: immerse the stainless steel substrate in pickling and degreasing solution, then ultrasonically wash it with sewage ethanol and deionized water for 15 minutes, and dry it for later use.

[0033](2) Ceramic target material preparation: use copper oxide powder with a particle size of 20 μm, cobalt oxide powder with a particle size of 20 μm, and manganese oxide powder with a particle size of 20 μm to mix according to a certain molar ratio, add polyvinyl alcohol for ball milling for 5 hours, granulate, sieve, The powder is placed in a mold and formed by cold isostatic pressing under a pressure of 15MPa, heated to 500°C for 2 hours, and then heated to 1000°C for sintering to obtain a ceramic target with a spinel structure.

[0034] (3) Ion bombardment treatment: the substrate is placed on the rotatin...

Embodiment 2

[0038] A Ni-doped CuCoMnO x The preparation method of the spinel structure solar energy selective absorption coating comprises the following steps:

[0039] (1) Substrate pretreatment: immerse the aluminum substrate in pickling and degreasing solution, then ultrasonically wash with sewage ethanol and deionized water for 10 minutes, and dry for later use.

[0040] (2) Preparation of ceramic target material: use copper oxide powder with a particle size of 10 μm, cobalt oxide powder with a particle size of 20 μm, and manganese oxide powder with a particle size of 30 μm to mix according to a certain molar ratio, add polyvinyl alcohol for ball milling for 6 hours, granulate, sieve, The powder was placed in a mold and formed by cold isostatic pressing under a pressure of 20 MPa, the temperature was raised to 550°C for 3 hours, and then the temperature was raised to 1200°C for sintering to obtain a ceramic target with a spinel structure.

[0041] (3) Ion bombardment treatment: the s...

Embodiment 3

[0045] A Ni-doped CuCoMnO x The preparation method of the spinel structure solar energy selective absorption coating comprises the following steps:

[0046] (1) Substrate pretreatment: immerse the copper substrate in pickling and degreasing solution, then ultrasonically wash with sewage ethanol and deionized water for 10 minutes, and dry for later use.

[0047] (2) Preparation of ceramic target material: use copper oxide powder with a particle size of 30 μm, cobalt oxide powder with a particle size of 20 μm, and manganese oxide powder with a particle size of 10 μm to mix according to a certain molar ratio, add polyvinyl alcohol for ball milling for 7 hours, granulate, sieve, The powder was placed in a mold and formed by cold isostatic pressing under a pressure of 25 MPa, the temperature was raised to 600°C for 3 hours, and then the temperature was raised to 1100°C for sintering to obtain a ceramic target with a spinel structure.

[0048] (3) Ion bombardment treatment: the sub...

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Abstract

The invention discloses a solar selective absorption coating and a preparation method thereof. By preparing a spinel structure ceramic target material in advance and using a Ni target material to be subjected to radio frequency magnetron sputtering on a substrate, the Ni-doped CuCoMnOx spinel structure solar selective absorption coating is prepared. The coating can be applied in a high temperatureenvironment, the binding force between an absorption layer and the substrate can be effectively improved, the coating is prevented from peeling off, and in addition, the doping content of metal elements can be precisely controlled. The two adopted target materials are both connected with radio frequency sources, the two radio frequency sources can work simultaneously and can also work independently. The target distance, the sputtering power and the sputtering time of the two target materials can be separately adjusted as required. When the two target materials simultaneously work, atoms in the two target materials will be sputtered out at the same time, and accordingly, doping can be conducted in situ. The doping concentration is very conveniently controlled by adjusting the target distance and the sputtering power of the doping target.

Description

technical field [0001] The present invention relates to a solar absorbing coating, in particular to a Ni-doped CuCoMnO x Spinel structure solar energy selective absorption coating and preparation method. Background technique [0002] The structural formula of spinel oxide is AB 2 o 4 or (A,B) 3 o 4 , and its lattice structure belongs to the cubic Fd3m space group. The A and B atoms are metal atoms, and their valences are +2 and +3 respectively. In the structure of spinel, metal elements and oxygen atoms are combined with strong ionic bonds, and the binding force is strong, so the spinel material has high hardness, high melting point (melting point is about 2000 degrees Celsius), stable chemical properties, heat resistance and Antioxidant is very strong. The thermal conductivity and thermal expansion of spinel are isotropic. In terms of optical properties, spinel is an optical homogeneous body. The spinel material has a small coefficient of thermal expansion and is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/06C23C14/08C23C14/10F24S70/20
CPCC23C14/0688C23C14/083C23C14/10C23C14/352F24S70/20Y02E10/40
Inventor 王爱平
Owner 广州珈鹏科技有限公司
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