Academic Journal
Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB2 Ceramics
| العنوان: | Multi-Scale Femtosecond-Laser Texturing for Photothermal Efficiency Enhancement on Solar Absorbers Based on TaB2 Ceramics |
|---|---|
| المؤلفون: | Elisa Sani, Diletta Sciti, Simone Failla, Cesare Melandri, Alessandro Bellucci, Stefano Orlando, Daniele M. Trucchi |
| المصدر: | Nanomaterials, Vol 13, Iss 10, p 1692 (2023) |
| بيانات النشر: | MDPI AG, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Chemistry |
| مصطلحات موضوعية: | Concentrating Solar Power, multi-scale surface texturing, solar absorbers, laser processing, Chemistry, QD1-999 |
| الوصف: | 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 TaB2 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. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 13101692 2079-4991 |
| Relation: | https://www.mdpi.com/2079-4991/13/10/1692; https://doaj.org/toc/2079-4991 |
| DOI: | 10.3390/nano13101692 |
| URL الوصول: | https://doaj.org/article/78dd092089ce42ce9fc0d59a9d1d9315 |
| رقم الانضمام: | edsdoj.78dd092089ce42ce9fc0d59a9d1d9315 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 13101692 20794991 |
|---|---|
| DOI: | 10.3390/nano13101692 |