110784 20230519145459.0 doi 10.1016/j.materresbull.2021.111450 sideral 126137 ART-2021-126137 eng Cubero, Á. Universidad de Zaragoza (orcid)0000-0002-3309-5961 Large enhancement of thermal conductance at ambient and cryogenic temperatures by laser remelting of plasma-sprayed Al2O3 coatings on Cu 2021 Access copy available to the general public Unrestricted Joints of high thermal contact conductance and electrical insulation have been obtained by coating copper supports with thin alumina (Al2O3) layers (of 140–150 µm thickness). This has been achieved by a combination of plasma spraying process and the subsequent coating remelting by a near-Infrared (n-IR) laser. With a proper optimization of the laser processing conditions, it is possible to transform the metastable ¿-Al2O3 phase of the as-sprayed coatings to stable a-Al2O3, and to achieve denser alumina coatings. This results in a large enhancement of the thermal conductance of the joints, enabling their application as heat sinks at cryogenic and ambient temperatures. The process proposed in this work is scalable for the formation of alumina coatings on large metallic pieces of complex geometries. © 2021 info:eu-repo/grantAgreement/ES/DGA/T54-20R info:eu-repo/grantAgreement/ES/MINECO/ENE2017-83669-C4-1-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 5.6 2021 MATERIALS SCIENCE, MULTIDISCIPLINARY 110 / 345 = 0.319 2021 Q2 T1 0.818 2021 Condensed Matter Physics 2021 Q1 Mechanical Engineering 2021 Q1 Materials Science (miscellaneous) 2021 Q1 9.8 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Martínez, E. (orcid)0000-0003-4839-5286 de la Fuente, G.F. (orcid)0000-0002-0500-1745 García Cano, I. Dosta, S. Angurel Lambán, L.A. Universidad de Zaragoza (orcid)0000-0001-5685-2366 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 143 (2021), 111450 [11 pp.] Mater. res. bull. Materials Research Bulletin 0025-5408 10419443 http://zaguan.unizar.es/record/110784/files/texto_completo.pdf Versión publicada 2651823 http://zaguan.unizar.es/record/110784/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:110784 articulos driver 2023-05-18-14:54:13 ARTICLE