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Fast preparation route to high-performances textured Sr-doped Ca3Co4O9.pdf (616.4Kb)
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Microsoft Academic
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Izenburua
Fast preparation route to high-performances textured Sr-doped Ca 3 Co 4 O 9 thermoelectric materials through precursor powder modification
Egilea
Urrutibeaskoa Irala, Idoia
Egilea (beste erakunde batekoa)
Torres, Miguel Ángel
García, Gustavo
Madre, María Antonieta
Diez, Juan Carlos
Sotelo, Andrés
Ikerketa taldea
Diseño y mecánica estructural
Argitalpen data
2019
Argitaratzailea
Science China Press
Gako-hitzak
Ceramics
Oxides
hot-pressing
electrical properties
power factor
Laburpena
This work presents a short and very efficientmethod to produce high performance textured Ca3Co4O9thermoelectric materials through initial powders modifica-tion. Microstructure has shown good grain ori ... [+]
This work presents a short and very efficientmethod to produce high performance textured Ca3Co4O9thermoelectric materials through initial powders modifica-tion. Microstructure has shown good grain orientation, andlow porosity while slightly lower grain sizes were obtained insamples prepared from attrition milled powders. All samplesshow the high density of around 96% of the theoretical value.These similar characteristics are reflected in, approximately,the same electrical resistivity and Seebeck coefficient valuesfor both types of samples. However, in spite of similar powerfactor (PF) at low temperatures, it is slightly higher at hightemperature for the attrition milled samples. On the otherhand, the processing time reduction (from 38 to 2 h) whenusing attrition milled precursors, leads to lower mechanicalproperties in these samples. All these data clearly point out tothe similar characteristics of both kinds of samples, with adrastic processing time decrease when using attrition milledprecursors, which is of the main economic importance whenconsidering their industrial production. [-]
URI
http://hdl.handle.net/20.500.11984/1681
Argitaratzailearen bertsioa
http://dx.doi.org/10.1007/s40843-018-9339-1
ISSN
2095-8226
Non argitaratua
Science China Materials  Vol. 62. Nº 3. Pp. 399–406. March, 2020
Dokumentu-mota
Artikulua
Bertsioa
Postprinta – Accepted Manuscript
Eskubideak
© Science China Press and Springer-Verlag GmbH
Sarbidea
Sarbide irekia
Bildumak
  • Artikuluak - Ingeniaritza [169]
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