96081 20210902121605.0 doi 10.1016/j.jeurceramsoc.2019.10.053 sideral 115978 ART-2020-115978 eng Moshtaghioun, Bibi Malmal Universidad de Zaragoza (orcid)0000-0001-6337-5510 Medium infrared transparency of MgO-MgAl2O4 directionally solidified eutectics 2020 Access copy available to the general public Unrestricted MgAl2O4-MgO eutectic ceramics have been fabricated by the laser floating zone method. Increasing growth rates from 10 to 50 mm/h, the microstructure transformed from irregular MgO rod-to-lamellae phase and it approached to almost homogeneous rod morphology. At the highest used velocity of 750 mm/h, the cell structure was completely dominant and the samples were free from transversal cracks. Although the highest flexure strength was found at 750 mm/h growth rate, the maximum optical transmittance in the medium-infrared range was obtained for 50 mm/h growth rate and for 1 mm thick samples reached values higher than 75% in the wavelengths between 4 and 5.3 µm. The enhanced transmittance for the sample with 50 mm/h growth rate can be explained in terms of the close refraction indexes of the component phases and the characteristic lengths of the resulting microstructure showing fully dense ceramics with the finest and almost homogeneous microstructure. info:eu-repo/grantAgreement/ES/DGA/T02-17R info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2016-77769R info:eu-repo/grantAgreement/ES/MINECO/Juan de la Cierva Program info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 5.302 2020 MATERIALS SCIENCE, CERAMICS 2 / 29 = 0.069 2020 Q1 T1 1.204 2020 Materials Chemistry 2020 Q1 Ceramics and Composites 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Peña, José I. Universidad de Zaragoza (orcid)0000-0003-2242-6822 Merino, Rosa I. Universidad de Zaragoza (orcid)0000-0003-0747-405X 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 40, 4 (2020), 1703-1708 J. Eur. Ceram. Soc. Journal of the European Ceramic Society 0955-2219 1315905 http://zaguan.unizar.es/record/96081/files/texto_completo.pdf Postprint 264166 http://zaguan.unizar.es/record/96081/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:96081 articulos driver 2021-09-02-08:37:16 ARTICLE