CN106757018A - A kind of solar selectively absorbing coating and preparation method thereof - Google Patents
A kind of solar selectively absorbing coating and preparation method thereof Download PDFInfo
- Publication number
- CN106757018A CN106757018A CN201611049833.2A CN201611049833A CN106757018A CN 106757018 A CN106757018 A CN 106757018A CN 201611049833 A CN201611049833 A CN 201611049833A CN 106757018 A CN106757018 A CN 106757018A
- Authority
- CN
- China
- Prior art keywords
- selectively absorbing
- coating
- absorbing coating
- solar selectively
- cermet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
- F24S70/225—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption for spectrally selective absorption
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
- F24S70/25—Coatings made of metallic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention provides a kind of solar selectively absorbing coating and preparation method, it is high infrared reflection layer, multiple dimensioned cermet absorbed layer, photoluminescent layers that the coating is set gradually by substrate to surface；The substrate is high infrared reflection layer；The metal phase of the multiple dimensioned cermet absorbed layer is that the metallic particles that nanometer~particle diameter is micron is constituted by one or more particle diameter, and ceramic phase is made up of one or more Ceramic Composite；The photoluminescent layers are located at the coating the superiors, by rear-earth-doped potassium-sodium niobate-based ceramics ((K, Na) NbO3) material composition.The invention also discloses a kind of preparation method of solar selectively absorbing coating.There is coating of the present invention excellent optical performance to be provided simultaneously with preferable heat endurance.
Description
Technical field
The present invention relates to a kind of solar selectively absorbing coating and preparation method thereof, for solar thermal collector, belong to
Solar thermal utilization and hot technical field of power generation.
Background technology
Solar selectively absorbing coating is a kind of important energy and material, and the photothermal deformation performance of the coating is directly determined
Solar thermal utilization efficiency.The solar selectively absorbing coating of current successful commercialization is the bilayer prepared using magnetron sputtering
Gradual change absorbs cermet selective coating, and the coating is absorbed using metal-dielectric simultaneously and interference of light principle of absorption is improved
Coating absorption efficiency, with good absorbent properties.But under its meet Lingao temperature the problems such as atoms permeating, coating shedding, and profit
It is more strict, it is necessary to compared with the thickness of each layer of precise control with magnetron sputtering preparation condition, limit it in high warm generates electricity
Using.So exploring loose working condition, process is simple and the side of functional solar selectively absorbing coating can be prepared
Method is particularly important.
The structure of coating is different, and the mechanism that it absorbs sunshine is also different.Cermet solar selectively absorbing coating
It is composite that micron or nano-metal particle are evenly distributed in dielectric ceramic, its absorption mechanism is the band of low transition metal
Between between transition and metallic particles and ceramic matrix RESONANCE ABSORPTION effect.Grain surface, is existed using physically or chemically means
Coating surface prepares special texture, and irregularities of these special unity and coherence in writing on microcosmic work as wavelength similar to optical trap
When shorter sunlight wave passes through trap, absorbed by multiple reflections in trap, so as to improve coating absorptivity.Using many chis
Degree metallic particles and ceramic material are compound, simply and effectively special texture structure can be obtained in coating surface, so as to obtain texture
The compound two-shipper reason absorber coatings of surface-inter metal dielectric.
Embedded photoluminescent material, the material is applied to area of solar cell earliest, and the material can absorb near infrared light acquisition
There is energy level transition and inspire the absorbable visible ray of battery in energy, significantly improve the absorptivity of solar cell, enter
And improve light-photoelectric transformation efficiency.Embedded photoluminescent material is deposited on cermet coating for selective absorption, by photic
Luminescent material, is converted to the absorbable sunshine of coating, therefore coating can be realized wider by the light that coating is unable to absorption bands
The absorption of frequency solar spectrum.Due to precise control need not be carried out to photoluminescent layers thickness, the technique for reducing prepares coating
Difficulty.
The content of the invention
It is an object of the invention to provide a kind of technique is relatively simple, cost is relatively low, the cermet sun of good performance
Energy coating for selective absorption and preparation method thereof, there is the coating excellent optical performance to be provided simultaneously with preferable heat endurance.
The technical solution adopted by the present invention is：A kind of solar selectively absorbing coating, the coating is by substrate to surface
Set gradually is high infrared reflection layer, multiple dimensioned cermet absorbed layer, photoluminescent layers；
The substrate is high infrared reflection layer, as high infrared reflection characteristic sheet metal or pipe；
The metal phase of the multiple dimensioned cermet absorbed layer is that nanometer~particle diameter is micron by one or more particle diameter
Metallic particles is constituted, and ceramic phase is made up of one or more Ceramic Composite；
The photoluminescent layers are located at the coating the superiors, by rear-earth-doped potassium-sodium niobate-based ceramics ((K, Na) NbO3) material
Composition.
Preferably, the substrate is polishing high infrared reflection sheet metal or pipe.
Preferably, the metal of the multiple dimensioned cermet absorbed layer metal phase include but is not limited to Mo, Ni, W, Fe,
Al, the ceramics of ceramic phase include but is not limited to SiO2、Al2O3、TiC、TiN。
Preferably, the rare earth doped element of the photoluminescent layers institute includes but is not limited to Er, Tm, Yb.
The preparation method of above-mentioned solar selectively absorbing coating, comprises the following steps：
1) multiple dimensioned cermet slurry is prepared；
2) with cladding process by obtained cermet paste deposition in high infrared reflection metallic substrates, formed absorbed layer；
3) post-processed with laser cladding after after its drying, metallurgical binding is reached with it；
4) rear-earth-doped potassium-sodium niobate-based ceramic target is prepared as photoluminescent layers；
5) photoluminescent layers are deposited on absorbed layer with magnetron sputtering method, obtain solar selectively absorbing coating.
Beneficial effect：1st, the innovation in conception --- luminescence generated by light/single-layer metal ceramic absorber is studied first；For
The problem of solar energy absorbing coating high temperature photothermal deformation unstable properties, proposes luminescence generated by light Ferroelectric ceramic/metal pottery first
Porcelain composite coating, studies luminescence generated by light-light absorbs coupling effect.2nd, the innovation in thinking --- various solar absorption principles
The thought being combined；Based on new construction coating, explore multiple dimensioned metal and ceramic matrix composition and cermet solar energy is selected
The influence of absorbing coating absorptivity and emissivity, obtains the novel absorbent that photo-thermal conversion efficiency is excellent and temperature stability is good
Coating；3rd, the innovation in method --- cladding process, the exploration of laser melting and coating technique and the research of structure-function integration；In this base
On plinth, inexpensive high temperature absorbed layer is prepared using cladding process, for the problem of coating high-temp poor mechanical property, using laser
Melting and coating technique is post-processed to absorbed layer, proposes that composite algorithm (cladding process-laser melting and coating technique) prepares absorbed layer first.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is FB(flow block) prepared by the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
As shown in figure 1, a kind of solar selectively absorbing coating, it is Gao Hong that the coating is set gradually by substrate to surface
Outer reflective layer 1, multiple dimensioned cermet absorbed layer 2, photoluminescent layers 3；The high infrared reflection layer 1 is polishing stainless steel piece,
The metal phase of the multiple dimensioned cermet absorbed layer 2 is by metallic particles that one or more particle diameter is that nanometer~particle diameter is micron
Composition, metal includes but is not limited to Mo, Ni, W, Fe, Al, and ceramic phase is made up of one or more Ceramic Composite, ceramics include but
It is not limited to SiO2、Al2O3、TiC、TiN.The photoluminescent layers 3 are located at the coating the superiors, by rear-earth-doped potassium-sodium niobate-based pottery
Porcelain ((K, Na) NbO3) material composition, the rare earth doped element of institute includes but is not limited to Er, Tm, Yb.
As shown in Fig. 2 the preparation method of above-mentioned solar selectively absorbing coating, comprises the following steps：
The first step：By metallic particles (Mo, Ni etc.) and ceramic powder (Al that particle diameter is nanometer and micron2O3、SiO2Deng) press
The mixing of certain mass ratio is put into container, through high-energy ball milling together with the organic solvent such as isopropanol, ethylene glycol, glycerine
30min is made uniform sizing material, is baked to obtain cermet powder.
Second step：Cermet powder is put into container, terpinol, polyethylene glycol etc. is added, through magnetic agitation 30min systems
Into uniform thick slurry, be coated uniformly on polishing stainless steel substrate, after be put into 180 DEG C of oven dryings.
3rd step：Made sample is put into workbench, suitable cladding parameter (laser power, sweep speed, hot spot are set
Shape, spot diameter etc.), wait a bit of time to cool down sample after laser automatically scanning terminates.
4th step：Sample after cladding makes its surface have suitable roughness using the sand papering of suitable mesh number.
5th step：The preparation of rear-earth-doped potassium-sodium niobate-based ceramic target
1) KNbO of certain mass ratio is weighed3、NaNbO3, rare earth element (Er, Tm, Yb etc.) be put into ball grinder, add suitable
Amount ethanol, makes material refine and be sufficiently mixed using high energy ball mill ball milling 60min；
2) briquetting pre-burning is used, by the slurry drying after ball milling, mould is poured into, piece is compressed into tablet press machine, be put into
Muffle furnace, it is 450 DEG C, pre-burning 180min to set temperature；
3) by pre- burned sample comminution, first roughly ground with mortar, then refined with ball mill；
4) levigate powder is added into adhesive, distilled water, grinds uniform after mixing again, then smashed, it is suitable to filter out
Powder carries out compressing tablet；
5) load bearing board of suitable size is selected, sample is placed, it is 1100 DEG C to set sintering temperature, 3h is sintered, then with stove
Cooling；
6th step：Using magnetron sputtering coater, by the 5th made target of step, the made print of one~tetra- step, plated film is put into
Room, is evacuated to 5 × 103Below Pa, is passed through argon gas, adjusts appropriate power, sets plated film time, observes plated film afterwards until plated film
Terminate.
Embodiments of the present invention are described in detail above in association with accompanying drawing, but the present invention is not limited to described reality
Apply mode.For one of ordinary skill in the art, in the range of principle of the invention and technological thought, to these implementations
Mode carries out various changes, modification, replacement and deformation and still falls within protection scope of the present invention.
Claims (5)
1. a kind of solar selectively absorbing coating, it is characterised in that：It is Gao Hong that the coating is set gradually by substrate to surface
Outer reflective layer (1), multiple dimensioned cermet absorbed layer (2), photoluminescent layers (3)；
The substrate is high infrared reflection layer (1), as high infrared reflection characteristic sheet metal or pipe；
The multiple dimensioned cermet absorbed layer (2), its metal phase is that nanometer~particle diameter is micron by one or more particle diameter
Metallic particles is constituted, and ceramic phase is made up of one or more Ceramic Composite；
The photoluminescent layers (3) are made up of positioned at the coating the superiors rear-earth-doped potassium-sodium niobate base ceramic material.
2. solar selectively absorbing coating according to claim 1, it is characterised in that：The substrate is polishing high IR
Reflective metal flakes or pipe.
3. solar selectively absorbing coating according to claim 1, it is characterised in that：The multiple dimensioned cermet is inhaled
Layer (2) is received, its metal phase metal includes but is not limited to Mo, Ni, W, Fe, Al, and ceramic phase ceramics include but is not limited to SiO2、
Al2O3、TiC、TiN。
4. solar selectively absorbing coating according to claim 1, it is characterised in that：Photoluminescent layers (3) institute
Rare earth doped element includes but is not limited to Er, Tm, Yb.
5. the preparation method of the solar selectively absorbing coating according to claim 1,2,3 or 4, it is characterised in that：Bag
Include following steps：
1) multiple dimensioned cermet slurry is prepared；
2) with cladding process by obtained cermet paste deposition in high infrared reflection metallic substrates, formed absorbed layer；
3) post-processed with laser cladding after after its drying, metallurgical binding is reached with it；
4) rear-earth-doped potassium-sodium niobate-based ceramic target is prepared as photoluminescent layers；
5) photoluminescent layers are deposited on absorbed layer with magnetron sputtering method, obtain solar selectively absorbing coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049833.2A CN106757018B (en) | 2016-11-24 | 2016-11-24 | A kind of solar selectively absorbing coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049833.2A CN106757018B (en) | 2016-11-24 | 2016-11-24 | A kind of solar selectively absorbing coating and preparation method thereof |
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| CN106757018A true CN106757018A (en) | 2017-05-31 |
| CN106757018B CN106757018B (en) | 2018-12-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559992A (en) * | 2018-01-23 | 2018-09-21 | 南京工业大学 | A kind of preparation method of multiple dimensioned cermet solar selectively absorbing coating |
| CN109354929A (en) * | 2018-08-30 | 2019-02-19 | 江苏京展能源科技有限公司 | A kind of preparation method of selective solar spectrum composite coating for absorbing |
| CN109972090A (en) * | 2019-04-04 | 2019-07-05 | 中国科学院宁波材料技术与工程研究所 | A kind of perfect absorber coating and preparation method thereof |
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| FR2988163A1 (en) * | 2012-03-14 | 2013-09-20 | Photofuel | Photovoltaic solar panel, comprises photovoltaic cells including operable surface elements that are tilted compared to reception face of support so that sum of surfaces of operable surface elements is higher than reception surface |
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| CN103787658A (en) * | 2014-02-09 | 2014-05-14 | 内蒙古科技大学 | Lead-free piezoelectric potassium sodium niobate optoelectronic multifunctional material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559992A (en) * | 2018-01-23 | 2018-09-21 | 南京工业大学 | A kind of preparation method of multiple dimensioned cermet solar selectively absorbing coating |
| CN109354929A (en) * | 2018-08-30 | 2019-02-19 | 江苏京展能源科技有限公司 | A kind of preparation method of selective solar spectrum composite coating for absorbing |
| CN109972090A (en) * | 2019-04-04 | 2019-07-05 | 中国科学院宁波材料技术与工程研究所 | A kind of perfect absorber coating and preparation method thereof |
| CN109972090B (en) * | 2019-04-04 | 2020-12-11 | 中国科学院宁波材料技术与工程研究所 | Perfect absorber coating and preparation method thereof |
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| Publication number | Publication date |
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| CN106757018B (en) | 2018-12-04 |
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