86281 20240104111811.0 doi 10.1016/j.ceramint.2018.11.245 sideral 109173 ART-2019-109173 eng Torres, M.A. Universidad de Zaragoza (orcid)0000-0003-3995-5763 Effect of substrate on the microstructure and thermoelectric performances of Sr-doped Ca3Co4O9 thick films 2019 Access copy available to the general public Unrestricted Ca3Co4O9 thermoelectric materials in form of thick films are very promising in practical applications due to their low costs and relatively high performance. In this work, two different suspensions have been used to produce different coatings on Al2O3 polycrystalline substrates with theoretical green thickness of 360 and 2000¿µm. Moreover, the effect of substrate has also been investigated using Al2O3 monocrystalline substrates and a 360¿µm green thickness. Sintering procedure at 900¿°C for 24¿h has drastically decreased coating thickness. XRD performed on the coatings surface has shown the formation of small amounts of Ca3Co2O6 secondary phase on the polycrystalline substrates, while it was more abundant, and accompanied by Ca2Co2O5 on the monocrystalline substrates. In spite of the higher secondary phases content, monocrystalline substrates produced a slight grain orientation which led to the highest thermoelectric properties between the samples (0.38¿mW/K2m at 800¿°C), and very close to the best reported values in the literature. info:eu-repo/grantAgreement/ES/DGA/T54-17R info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2017-82183-C3-1-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.83 2019 MATERIALS SCIENCE, CERAMICS 2 / 28 = 0.071 2019 Q1 T1 0.891 2019 Electronic, Optical and Magnetic Materials 2019 Q1 Ceramics and Composites 2019 Q1 Surfaces, Coatings and Films 2019 Q1 Process Chemistry and Technology 2019 Q1 Materials Chemistry 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Mora, M. Universidad de Zaragoza (orcid)0000-0003-4747-7327 Amaveda, H. Universidad de Zaragoza (orcid)0000-0003-2212-447X Madre, M.A. Universidad de Zaragoza (orcid)0000-0002-0794-3998 Sotelo, A. Universidad de Zaragoza (orcid)0000-0001-7056-0546 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 45, 5 (2019), 5431-5435 Ceram. int. Ceramics International 0272-8842 418214 http://zaguan.unizar.es/record/86281/files/texto_completo.pdf Postprint 62329 http://zaguan.unizar.es/record/86281/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:86281 articulos driver 2024-01-04-11:02:19 ARTICLE