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Greatly enhanced solar absorption via high entropy ceramic AlCrTaTiZrN based solar selective absorber coatings
- Source :
- Journal of Materiomics, Vol 7, Iss 3, Pp 460-469 (2021)
- Publication Year :
- 2021
- Publisher :
- Elsevier, 2021.
-
Abstract
- High entropy alloys (HEAs), which is at the expense of high cost compared to traditional alloy, should not be confined to the mechanical properties, but should be employed to devise a novel combination with unique functional and mechanical performances. In this work, high entropy alloy nitride (HEAN) is utilized as a novel double absorption layer to improve solar absorption in the high temperature solar selective absorbing coatings (SSACs). Our primary motivation is to lower thermal emittance (e) and enhance solar absorptance (α). In order to realize this goal, coating design (CODE) software is employed to design and optimize the proposed HEAN based SSACs using appropriate dielectric function model. The ultimate as-deposited coating shows good optical properties with a high α value of 0.965 and a low e value of 0.086 (at 82 °C). The estimate of thermal stability tests indicates that HEAN based SSACs has the ability to resist instability in high working temperature, which keeps good optical properties (α = 0.925, e = 0.070) after annealing at 600 °C for 10 h.
- Subjects :
- Materials science
Solar selective absorbing coating
High entropy alloy nitride
02 engineering and technology
engineering.material
Nitride
010402 general chemistry
01 natural sciences
Coating
AlCrTaTiZr
lcsh:TA401-492
Thermal emittance
Thermal stability
Ceramic
Optical properties
business.industry
High entropy alloys
Metals and Alloys
021001 nanoscience & nanotechnology
Selective surface
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Resist
visual_art
engineering
visual_art.visual_art_medium
Optoelectronics
lcsh:Materials of engineering and construction. Mechanics of materials
0210 nano-technology
business
Subjects
Details
- Language :
- English
- ISSN :
- 23528478
- Volume :
- 7
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Journal of Materiomics
- Accession number :
- edsair.doi.dedup.....5c3d8fa496ba728fe3790ea4d3092594