TY - JOUR
T1 - High-temperature thermoelectric properties of Ti0.5(ZrHf) 0.5-xNbxNi0.9Pd0.1Sn 0.98Sb0.02 half-Heusler alloys
AU - Lee, Ping Jen
AU - Chao, Long Sun
PY - 2010/8/31
Y1 - 2010/8/31
N2 - The effects of Nb substitution at the IV metal site on the thermoelectric properties of Ti0.5(ZrHf)0.5-xNbxNi 0.9Pd0.1Sn0.98Sb0.02 half-Heusler alloy compounds were investigated by measuring the electrical resistivity, Hall effect, Seebeck coefficient and thermal conductivity. Changes in its microstructure were characterized using SEM and X-ray diffraction. It was shown that the substitution of Nb for TiNiSn-based alloys led to a significant reduction in the thermal conductivity due to the increase in defects and an enhancement of the electrical conductivity. The best sample reached a ZT of 0.66 at 900 K with an Nb content of x = 0.01.
AB - The effects of Nb substitution at the IV metal site on the thermoelectric properties of Ti0.5(ZrHf)0.5-xNbxNi 0.9Pd0.1Sn0.98Sb0.02 half-Heusler alloy compounds were investigated by measuring the electrical resistivity, Hall effect, Seebeck coefficient and thermal conductivity. Changes in its microstructure were characterized using SEM and X-ray diffraction. It was shown that the substitution of Nb for TiNiSn-based alloys led to a significant reduction in the thermal conductivity due to the increase in defects and an enhancement of the electrical conductivity. The best sample reached a ZT of 0.66 at 900 K with an Nb content of x = 0.01.
UR - http://www.scopus.com/inward/record.url?scp=77955468782&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955468782&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2010.05.086
DO - 10.1016/j.jallcom.2010.05.086
M3 - Article
AN - SCOPUS:77955468782
VL - 504
SP - 192
EP - 196
JO - Journal of the Less-Common Metals
JF - Journal of the Less-Common Metals
SN - 0925-8388
IS - 1
ER -