โ Scribed by Li, Jing-Feng ;Liu, Jing
No coin nor oath required. For personal study only.
NanoโSiC dispersed Bi~2~Te~3~ was synthesized by mechanical alloying (MA) followed by spark plasma sintering (SPS). The effects of SiC dispersion on the thermoelectric properties of the SPSโsintered Bi~2~Te~3~ alloys were investigated. The results revealed that SiC dispersion in the Bi~2~Te~3~ matrix increased the absolute value of Seebeck coefficient. Although the electrical resistance was increased somewhat, Bi~2~Te~3~ with 0.1 wt% SiC showed a higher power factor than Bi~2~Te~3~ without SiC. Because the dispersion of SiC nanoโparticles reduced the thermal conductivity at the same time, 0.1 wt% (โผ0.24 vol% SiC) addition of SiC nanoโparticles increased the figure of merit of Bi~2~Te~3~ by 18%. (ยฉ 2006 WILEYโVCH Verlag GmbH & Co. KGaA, Weinheim)
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