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High weatherability selective absorption coating based on aluminum materials and preparation method thereof

An absorbing coating and selective technology, applied in chemical instruments and methods, layered products, metal layered products, etc. The effect of excellent solar spectrum selective absorption optical properties

Active Publication Date: 2012-05-09
DEZHOU JINHENG NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, magnetron sputtering is used to prepare coatings for flat-plate solar collectors, but the base material is copper, and the weather resistance test has not been carried out

Method used

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  • High weatherability selective absorption coating based on aluminum materials and preparation method thereof
  • High weatherability selective absorption coating based on aluminum materials and preparation method thereof
  • High weatherability selective absorption coating based on aluminum materials and preparation method thereof

Examples

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Embodiment 1

[0026] according to figure 1 , the high weather resistance selective absorption coating 1 is a five-layer structure, the substrate 2 is aluminum or aluminum alloy plate, the aluminum substrate 2 is pretreated to obtain a good basic surface, and then the direct current or intermediate frequency reaction magnetron sputtering method is used Form a compound transition layer 3 of metal Al, Si, Ti, Ni, Cr, Sn, stainless steel, and alloys with N or O with a thickness of 10-150 nm, and then deposit a layer with a thickness of 30-30 nm by DC or intermediate frequency reactive magnetron sputtering. 500nm metal Al, Cu, Ag, Ni, Mo, W, Cr, stainless steel and alloys constitute the infrared reflective layer 4, and then use DC or intermediate frequency reactive magnetron sputtering to form metal Al, Si, Ti, Ni with a thickness of 10~150nm , Cr, Sn, stainless steel and alloys with N or O to form a compound transition layer 5, and then use DC or intermediate frequency reactive magnetron sputte...

Embodiment 2

[0029] according to figure 1 , the high weather resistance selective absorption coating 1 is a five-layer structure, the substrate 2 is aluminum or aluminum alloy plate, the aluminum substrate 2 is pretreated to obtain a good basic surface, and then the direct current or intermediate frequency reaction magnetron sputtering method is used Form a compound transition layer 3 of metal Al, Si, Ti, Ni, Cr, Sn, stainless steel, and alloys with N or O with a thickness of 10-150 nm, and then deposit a layer with a thickness of 30-30 nm by DC or intermediate frequency reactive magnetron sputtering. 500nm metal Al, Cu, Ag, Ni, Mo, W, Cr, stainless steel and alloys constitute the infrared reflective layer 4, and then use DC or intermediate frequency reactive magnetron sputtering to form metal Al, Si, Ti, Ni with a thickness of 10~150nm , Cr, Sn, stainless steel and alloys with N or O to form a compound transition layer 5, and then use DC or intermediate frequency reactive magnetron sputte...

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Abstract

The invention especially discloses a high weatherability selective absorption coating based on aluminum materials and a preparation method thereof, belonging to the technical field of solar photo-thermal conversion. The high weatherability selective absorption coating based on aluminum materials uses aluminum or aluminum alloy as a substrate and is characterized in that: a transition layer, an infrared reflecting layer, a transition layer, a cermet layer and a protective layer are sequentially sputtered on the surface of the substrate from bottom to top. The coating provided in the invention has the excellent optical property of solar spectrum selective absorption and superior weatherability; when working in a high temperature high humidity environment, the coating still has good optical performance; the coating can also be used in an enclosed vacuum environment or a more superior environment, and the service life of the coating is more excellent.

Description

(1) Technical field [0001] The invention belongs to the technical field of solar photothermal conversion, in particular to an aluminum-based highly weather-resistant selective absorption coating and a preparation method thereof. (2) Background technology [0002] Selective absorbing coatings are the key to solar thermal conversion, and with the development of solar thermal elements, higher and higher requirements are put forward for coatings. General heat-collecting elements require selective absorption coatings to have optical properties of high absorption ratio in the solar spectrum (300nm~2500nm) and low emission ratio in the infrared band (>2500nm). [0003] At present, the methods for obtaining solar photothermal conversion coatings include spraying, electrochemical (anodizing, electroplating, etc.) and magnetron sputtering. Spraying and electrochemical methods cannot obtain very low emission ratios and are not environmentally friendly. There are many reports on...

Claims

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Application Information

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IPC IPC(8): B32B9/04B32B15/00
Inventor 韩荣涛
Owner DEZHOU JINHENG NEW ENERGY
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