Year: 2007
Type: article
Abstract: Our goal is the improvement of the thermoelectric properties for FeSi2. We investigated the improvement of thermoelectric properties, that is, the increase of the power factor and the decrease in the thermal conductivity to add Ta2O5. The thermal conductivity of specimens with 1 mass% and 3 mass% of additive decreased to half in comparison with the sample without additive, because phonon scattering was enhanced as a result of an increase in the number of pores in the samples by the influence of Ta2O5. The figure of merit for sample with 1 mass% and 3 mass% of additive were higher than that for the sample without additive. The highest performance of the sample with 1 mass% of additive was 2.5×10−4K−1∼2.8×10−4 K−1 around 700 K and its dimensionless figure of merit was 0.2 at 700 K.
Source: MATERIALS TRANSACTIONS
Authors: Kentarou Morikawa, Hiroyuki Chikauchi, Hiroyuki Mizoguchi, Sunao Sugihara
Institution: Shonan Institute of Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2462011761