NiCr system flat plate solar energy spectrally selective absorbing coating and preparation method thereof
A technology of flat-panel solar energy and absorbing coatings, applied in coatings, chemical instruments and methods, metal material coating processes, etc., can solve the problems of high production cost of coatings, achieve good adhesion, high deposition rate, and short production cycle Effect
Active Publication Date: 2014-08-06
北京桑达太阳能技术有限公司
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The optical performance of the blue film is very good, but the production cost of the coating is also high
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[0015] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0016] like figure 1 As shown, the NiCr-based flat panel solar spectrum selective absorption coating of the present invention comprises a substrate 1, on which a transition layer 2, an infrared reflection layer 3, an absorption layer 2, an infrared reflection layer 3, an absorption layer 4 and an anti-reflection layer 5. The absorption layer 4 is composed of a first sublayer and a second sublayer.
[0017] In the above embodiment, the substrate 1 can be made of aluminum, copper or stainless steel.
[0018] In the above embodiments, the transition layer 2 is a CrN, CrON, SiN or SiON layer, and its thickness is 20-100 nm; the infrared reflection layer 3 is a Cu layer or an Al layer, and its thickness is 50-200 nm; The sublayer and the second sublayer are both NiCrON+CrON (or SiON) films, and the thicknesses of the first sublayer and the second sublayer...
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Abstract
The invention relates to a NiCr system flat plate solar energy spectrally selective absorbing coating and a preparation method thereof. The coating comprises a substrate, wherein a transition layer, an infrared reflecting layer, an absorbing layer and an antireflection layer are arranged on the substrate from inside to outside in sequence by a direct current (DC) magnetron sputtering method; and the absorbing layer is formed by a first sublayer and a second sublayer. The preparation method is characterized by adopting NiCr alloys as conducting particles and comprises the following steps of: (1) selecting the substrate, and preparing the transition layer on the substrate by a metal target DC magnetron sputtering method; (2) preparing the infrared reflecting layer on the transition layer by the metal target DC magnetron sputtering method, wherein the metal target is a pure metal Cu or Al target; (3) preparing the absorbing layer on the infrared reflecting layer by the NiCr alloy target DC magnetron sputtering method; and (4) preparing the antireflection layer on the absorbing layer by the metal target DC magnetron sputtering method. The coating has the advantages of high deposition rate and short production cycle, and the adopted materials can meet the environmental requirement. The coating and the preparation method can be widely applied to the technical field of solar heat utilization materials.
Description
technical field [0001] The invention relates to a solar spectrum selective absorption coating and a preparation method thereof, in particular to a NiCr-based flat plate solar energy spectrum selective absorption coating prepared by DC magnetron reactive sputtering and a preparation method thereof. Background technique [0002] With the promotion and popularization of new energy, and the progress and development of science and technology, the integration of solar energy and buildings has higher and higher technical requirements for solar water heaters, and the market demand is more and more urgent. Compared with vacuum tube solar water heater products, flat panel products are safe, reliable, efficient, pressure-bearing, more suitable for integration with buildings, and more conducive to promoting the development of building integration. The collector plate is the core component of flat-panel solar collectors. In order to maximize the absorption of radiant energy by the collec...
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IPC IPC(8): B32B15/04B32B9/04B32B33/00C23C14/35C23C14/06C23C14/16
Inventor 尹万里崔银芳张敏孙守建李世杰王轩
Owner 北京桑达太阳能技术有限公司