56175 20200221144207.0 doi 10.1364/OE.24.00A823 sideral 95361 ART-2016-95361 eng (orcid)0000-0002-5998-2251 Sola, D. Directionally solidified fabrication in planar geometry of Al2O3-Er3Al5O12 eutectic composite for thermophotovoltaic devices 2016 Access copy available to the general public Unrestricted In this work Al2O3-Er3Al5O12 eutectic composite was manufactured in planar geometry departing from eutectic particles both produced by directional solidification using a CO2 laser system at rates of 180 and 720 mm/h. Microstructure and mechanical properties were investigated as a function of the growth rate. Homogeneous and interpenetrated microstructure was found with phase size strongly dependent on the growth rate, decreasing when the processing rate was increased. Thermal emission of eutectic composites was studied in function of thermal excitation by using CO2 laser radiation as a heating source. An intense narrow emission band at 1.55 µm matching with the sensitive region of the InGaAs photoconverter and a low emission band at 1 µm were obtained. Features of thermal emission bands were correlated with collecting angle, microstructure and laser power, and compared to those obtained from departing eutectic particles. info:eu-repo/grantAgreement/ES/MINECO/MAT2013-41045-R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.307 2016 OPTICS 16 / 92 = 0.174 2016 Q1 T1 1.532 2016 Atomic and Molecular Physics, and Optics 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0003-3480-398X Oliete, P.B. Universidad de Zaragoza (orcid)0000-0003-2242-6822 Peña, J.I. Universidad de Zaragoza 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 24, 10 (2016), A823-A831 Opt. express Optics Express 1094-4087 3853969 http://zaguan.unizar.es/record/56175/files/texto_completo.pdf Versión publicada 82942 http://zaguan.unizar.es/record/56175/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:56175 articulos driver 2020-02-21-13:10:33 ARTICLE