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Journal of materials science, 2013-04, Vol.48 (7), p.2812-2816
Erscheinungsjahr
2013
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Glass-ceramics obtained via a true bulk glassy phase offer a possibility to obtain high-temperature stable nanostructured materials in a cost efficient way which is suitable for mass production. We apply the method of glass-ceramic manufacturing to a crystalline phase which is known for its good thermoelectric properties as an n-doped material. Nb-doped SrTiO3 with grain sizes of several nanometers is obtained as the main crystalline phase from transparent bulk glass after applying a well-defined timeatemperature profile for ceramization. The glass-ceramics show a low thermal conductivity of around 1.6 W/mK and a Seebeck coefficient around ?480 ?V/K together with electronic conductivity. Thermal cycling of these glass-ceramics without degradation of the thermoelectric properties for temperatures up to 650 degree C (923 K) is shown as well.