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Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB(2) Ceramics

Tantalum boride is an ultra-refractory and ultra-hard ceramic known so far for its favorable high-temperature thermo-mechanical properties and also characterized by a low spectral emittance, making it interesting for novel high-temperature solar absorbers for Concentrating Solar Power. In this work,...

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Autores principales: Sani, Elisa, Sciti, Diletta, Failla, Simone, Melandri, Cesare, Bellucci, Alessandro, Orlando, Stefano, Trucchi, Daniele M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10223390/
https://www.ncbi.nlm.nih.gov/pubmed/37242107
http://dx.doi.org/10.3390/nano13101692
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author Sani, Elisa
Sciti, Diletta
Failla, Simone
Melandri, Cesare
Bellucci, Alessandro
Orlando, Stefano
Trucchi, Daniele M.
author_facet Sani, Elisa
Sciti, Diletta
Failla, Simone
Melandri, Cesare
Bellucci, Alessandro
Orlando, Stefano
Trucchi, Daniele M.
author_sort Sani, Elisa
collection PubMed
description Tantalum boride is an ultra-refractory and ultra-hard ceramic known so far for its favorable high-temperature thermo-mechanical properties and also characterized by a low spectral emittance, making it interesting for novel high-temperature solar absorbers for Concentrating Solar Power. In this work, we investigated two types of TaB(2) sintered products with different porosities, and on each of them, we realized four femtosecond laser treatments differing in the accumulated laser fluence. The treated surfaces were then characterized by SEM-EDS, roughness analysis, and optical spectrometry. We show that, depending on laser processing parameters, the multi-scale surface textures produced by femtosecond laser machining can greatly increase the solar absorptance, while the spectral emittance increase is significantly lower. These combined effects result in increased photothermal efficiency of the absorber, with interesting perspectives for the application of these ceramics in Concentrating Solar Power and Concentrating Solar Thermal. To the best of our knowledge, this is the first demonstration of successful photothermal efficiency enhancement of ultra-hard ceramics using laser machining.
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spelling pubmed-102233902023-05-28 Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB(2) Ceramics Sani, Elisa Sciti, Diletta Failla, Simone Melandri, Cesare Bellucci, Alessandro Orlando, Stefano Trucchi, Daniele M. Nanomaterials (Basel) Article Tantalum boride is an ultra-refractory and ultra-hard ceramic known so far for its favorable high-temperature thermo-mechanical properties and also characterized by a low spectral emittance, making it interesting for novel high-temperature solar absorbers for Concentrating Solar Power. In this work, we investigated two types of TaB(2) sintered products with different porosities, and on each of them, we realized four femtosecond laser treatments differing in the accumulated laser fluence. The treated surfaces were then characterized by SEM-EDS, roughness analysis, and optical spectrometry. We show that, depending on laser processing parameters, the multi-scale surface textures produced by femtosecond laser machining can greatly increase the solar absorptance, while the spectral emittance increase is significantly lower. These combined effects result in increased photothermal efficiency of the absorber, with interesting perspectives for the application of these ceramics in Concentrating Solar Power and Concentrating Solar Thermal. To the best of our knowledge, this is the first demonstration of successful photothermal efficiency enhancement of ultra-hard ceramics using laser machining. MDPI 2023-05-21 /pmc/articles/PMC10223390/ /pubmed/37242107 http://dx.doi.org/10.3390/nano13101692 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sani, Elisa
Sciti, Diletta
Failla, Simone
Melandri, Cesare
Bellucci, Alessandro
Orlando, Stefano
Trucchi, Daniele M.
Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB(2) Ceramics
title Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB(2) Ceramics
title_full Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB(2) Ceramics
title_fullStr Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB(2) Ceramics
title_full_unstemmed Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB(2) Ceramics
title_short Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB(2) Ceramics
title_sort multi-scale femtosecond-laser texturing for photothermal efficiency enhancement on solar absorbers based on tab(2) ceramics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10223390/
https://www.ncbi.nlm.nih.gov/pubmed/37242107
http://dx.doi.org/10.3390/nano13101692
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