RT Journal Article
T1 Silver zirconium oxide cermet coatings spray deposited onto galvanized steel sheet for low temperature solar applications
A1 Romero Pareja, Rocío
A1 Domínguez Huertas, Antonia
A1 López-Escalante, María Cruz
A1 Martín-Jiménez, Francisco de Paula
A1 Romero-Gómez, Pablo
A1 Palanco-López, Santiago
A1 Leinen, Dietmar
K1 Energía solar - Aplicaciones
AB A new type of cermet coating, with potential use as low-cost solar thermal absorber has been developed using spray pyrolysis. It consists of crystalline silver nanoparticles embedded in amorphous zirconia and was obtained by spraying aqueous precursor solutions onto aluminized carbon steel sheets at 200 °C. It was found that simultaneous spraying of silver and zirconium solutions led to a considerable reduction, in the nanometer range, of silver particle size distribution. Hence, we comparatively studied the cermet coatings obtained by A) sequentially or B) simultaneously spraying silver and zirconium solutions. For the latter case, a zirconia anti-reflection layer was sprayed on top. Both coating systems were studied by SEM, AFM, HRTEM/EDS and UV-VIS-IR spectroscopy with respect to silver particle size distribution. Optical parameters like solar absorptance (AM 1.5) and thermal emittance (373 K) were determined from absolute hemispherical reflectance, and a performance coefficient was calculated in order to evaluate the solar selectivity of the coatings. The comparison showed that smaller silver particles lead to an increase in solar selectivity and that the size reduction is due to an effective encapsulation by zirconia of the silver particles when spraying silver and zirconium precursors simultaneously. Furthermore, HRTEM confirmed the metallic and crystalline state of the silver nanoparticles embedded in amorphous zirconia.
PB Elsevier
YR 2023
FD 2023-11-01
LK https://hdl.handle.net/10630/34584
UL https://hdl.handle.net/10630/34584
LA eng
NO R. Romero, A. Domínguez, M.C. López-Escalante, F. Martín, P. Romero-Gomez, S. Palanco, D. Leinen, Silver zirconium oxide cermet coatings spray deposited onto galvanized steel sheet for low temperature solar applications, Ceramics International, Volume 49, Issue 21, 2023, Pages 33643-33651, ISSN 0272-8842, https://doi.org/10.1016/j.ceramint.2023.08.045
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 4 mar 2026