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Título: | Influence of Fe2O3 on the structure and near-infrared emissivity of aluminosilicate glass coatings |
Autor: | Gahmousse, Abdelaziz; Ferria, Kouider; Rubio Alonso, Juan CSIC ORCID; Cornejo, Nilo; Tamayo Hernando, Aitana CSIC ORCID CVN | Palabras clave: | Glass coating Fe2O3 Near-infrared emissivity Structure Microstructure |
Fecha de publicación: | 25-ago-2020 | Editor: | Springer Nature | Citación: | Applied Physics A: Materials Science and Processing 126 (2020) | Resumen: | The present paper reports on the development of a vitreous material with high near-infrared (NIR) emissivity. Silica-based glasses (SiO, NaO, AlO, KO) with different FeO (hematite) contents are deposited on ceramic tiles as coatings and annealed at 1250 °C. Using the indirect radiometric measurement method, the emissivity of the materials was determined at room temperature, where the spectral directional reflectance of the coatings was measured. The samples possessing high emissivity values of 0.78–0.80 in the near-infrared are those with the highest FeO contents. Colorimetric test (L*a*b*), has revealed that the glass coating goes darker red by adding more amount of FeO. XRD analysis has shown the magnetite, hematite, and nepheline crystallization phases in the glasses with FeO contents above 30 wt%. Readable aspects of FTIR absorbance spectra were found, which gave information about the structure variations of these glasses as a function of FeO content, also, SEM photographs displayed morphology of the prepared glass coatings. | Versión del editor: | http://dx.doi.org/10.1007/s00339-020-03921-8 | URI: | http://hdl.handle.net/10261/234577 | DOI: | 10.1007/s00339-020-03921-8 | ISSN: | 0947-8396 | E-ISSN: | 1432-0630 |
Aparece en las colecciones: | (ICV) Artículos |
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