Thermoelectric properties of CuAlO2

Polycrystalline samples of CuAlO2 were prepared by a solid state reaction method. The mixture of CuO and Al2O3 powders was calcined at 1073K for 2h. The green compacts were sintered at 1433 or 1473K for 20h in air and then furnace cooled. The crystalline structure of the sintered CuAlO2 bodies was r...

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Veröffentlicht in:	Journal of the European Ceramic Society 2005, Vol.25 (12), p.2219-2222
Hauptverfasser:	PARK, K, KO, K. Y, SEO, W.-S
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals Condensed matter: electronic structure, electrical, magnetic, and optical properties Conductivity phenomena in semiconductors and insulators Electronic transport in condensed matter Electrotechnical and electronic ceramics Exact sciences and technology Physics Technical ceramics Thermoelectric and thermomagnetic effects
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Zusammenfassung:	Polycrystalline samples of CuAlO2 were prepared by a solid state reaction method. The mixture of CuO and Al2O3 powders was calcined at 1073K for 2h. The green compacts were sintered at 1433 or 1473K for 20h in air and then furnace cooled. The crystalline structure of the sintered CuAlO2 bodies was rhombohedral, R3?m, along with a very small amount of CuO with a monoclinic structure. It was found that the thermoelectric properties of CuAlO2 ceramics were significantly dependent on sintering temperature. The power factor increased with increasing temperature. The values of the power factor measured at 1140K for the CuAlO2 samples sintered at 1433 and 1473K were 498x10(--5)and 6*62x10(--5)Wm(--1)K(--2), respectively.
ISSN:	0955-2219 1873-619X
DOI:	10.1016/j.jeurceramsoc.2005.03.034