Kwon, O-Jong ; Jo, Wook ; Ko, Kyeong-Eun ; Kim, Jae-Yeol ; Bae, Sung-Hwan ; Koo, Hyun ; Jeong, Seong-Min ; Kim, Jin-Sang ; Park, Chan (2011)
Thermoelectric properties and texture evaluation of Ca3Co4O9 prepared by a cost-effective multisheet cofiring technique.
In: Journal of Materials Science, 46 (9)
doi: 10.1007/s10853-010-5163-3
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Highly textured Ca3Co4O9 thermoelectrics were fabricated by a so-called multisheet cofiring (MSC) technique in combination with the commonly practiced spark plasma sintering (SPS) technique. X-ray diffraction analysis revealed that the MSC technique significantly enhances the degree of texture compared with the conventional SPS technique. This was confirmed by microstructure analysis performed on polished and chemically etched specimens. The power factor and the thermoelectric figure of merit for the specimen produced by the MSC technique were estimated to be ~5.2 × 10−4 W/mK2 and ~0.4, respectively, both of which are ~20% larger than those of the normally processed specimens. A comparative study of the thermoelectric properties, such as electrical resistivity and Seebeck coefficient, clearly demonstrated that texture mainly influences the electrical resistivity and consequently enhances the thermoelectric properties.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Kwon, O-Jong ; Jo, Wook ; Ko, Kyeong-Eun ; Kim, Jae-Yeol ; Bae, Sung-Hwan ; Koo, Hyun ; Jeong, Seong-Min ; Kim, Jin-Sang ; Park, Chan |
| Art des Eintrags: | Bibliographie |
| Titel: | Thermoelectric properties and texture evaluation of Ca3Co4O9 prepared by a cost-effective multisheet cofiring technique |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Materials Science |
| Jahrgang/Volume einer Zeitschrift: | 46 |
| (Heft-)Nummer: | 9 |
| DOI: | 10.1007/s10853-010-5163-3 |
| Kurzbeschreibung (Abstract): | Highly textured Ca3Co4O9 thermoelectrics were fabricated by a so-called multisheet cofiring (MSC) technique in combination with the commonly practiced spark plasma sintering (SPS) technique. X-ray diffraction analysis revealed that the MSC technique significantly enhances the degree of texture compared with the conventional SPS technique. This was confirmed by microstructure analysis performed on polished and chemically etched specimens. The power factor and the thermoelectric figure of merit for the specimen produced by the MSC technique were estimated to be ~5.2 × 10−4 W/mK2 and ~0.4, respectively, both of which are ~20% larger than those of the normally processed specimens. A comparative study of the thermoelectric properties, such as electrical resistivity and Seebeck coefficient, clearly demonstrated that texture mainly influences the electrical resistivity and consequently enhances the thermoelectric properties. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 18 Mai 2011 15:20 |
| Letzte Änderung: | 05 Mär 2013 09:47 |
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