From nanosized precursors to high performance ceramics: the case of Bi2Ca2Co1.7Ox

Madre, M. A. (Universidad de Zaragoza) ; Rasekh, Sh. ; Touati, K. ; Salvador, C. ; Depriester, M. ; Torres, M. A. (Universidad de Zaragoza) ; Bosque, P. (Universidad de Zaragoza) ; Diez, J. C. (Universidad de Zaragoza) ; Sotelo, A. (Universidad de Zaragoza)

Resumen: Bi2Ca2Co1.7Ox thermoelectric ceramics were prepared by four different synthesis routes: coprecipitation with ammonium carbonate or oxalic acid, attrition milling, and solid state (as reference). Microstructure showed that coprecipitation and attrition milling produced sintered materials with less porosity and smaller particle sizes than the solid state ones. Thermoelectric properties reflect the microstructure, leading to materials with lower electrical resistivity and higher Seebeck coefficient, when compared with the solid state ones. In spite of an increase in thermal conductivity in these samples due to their lower porosity, the maximum estimated Figure-of-Merit is higher than in sintered materials.

Idioma: Inglés

DOI: 10.1016/j.matlet.2017.01.031

Año: 2017

Publicado en: MATERIALS LETTERS 191 (2017), 14-16 [8 pp.]
ISSN: 0167-577X

Factor impacto JCR: 2.687 (2017)

Categ. JCR: PHYSICS, APPLIED rank: 44 / 146 = 0.301 (2017) - Q2 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 97 / 283 = 0.343 (2017) - Q2 - T2

Factor impacto SCIMAGO: 0.782 - Mechanical Engineering (Q1) - Mechanics of Materials (Q2) - Condensed Matter Physics (Q2) - Materials Science (miscellaneous) (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/T12
Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/T87
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2013-46505-C3-1-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Expresión Gráfica en Ing. (Dpto. Ingeniería Diseño Fabri.)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)