TY - JOUR
T1 - High-temperature thermoelectric properties of Tix(ZrHf)0.99-xV0.01Ni0.9Pd0.1Sn0.99Sb0.01 half-Heusler alloys
AU - Lee, Ping Jen
AU - Tseng, Shih Chun
AU - Chao, Long Sun
N1 - Funding Information:
The work was supported by the National Science Council of Taiwan , Republic of China under contract No. NSC-98-2221-E-006-230.
Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/4/30
Y1 - 2010/4/30
N2 - The effect of Ti substitution at the Zr and Hf site on thermoelectric properties of Tix(ZrHf)0.99-xV0.01Ni0.9Pd0.1Sn0.99Sb0.01 half-Heusler alloy compounds was investigated by finding the electrical resistivity, Hall effect, Seebeck coefficient, thermal conductivity and using X-ray diffraction. It was shown that substitution of Ti for Zr and Hf leads to a major reduction in the thermal conductivity and an enhancement of the Seebeck coefficient. The observed maximum Seebeck coefficient, minimum electrical resistivity, and minimum thermal conductivity at about 820 K are -206 μV K-1, 0.71 mΩ cm, and 5.13 W m-1 K-1, respectively. In addition, the dimensionless figure of merit is about 0.92 at about 820 K with a Ti content at x = 0.3.
AB - The effect of Ti substitution at the Zr and Hf site on thermoelectric properties of Tix(ZrHf)0.99-xV0.01Ni0.9Pd0.1Sn0.99Sb0.01 half-Heusler alloy compounds was investigated by finding the electrical resistivity, Hall effect, Seebeck coefficient, thermal conductivity and using X-ray diffraction. It was shown that substitution of Ti for Zr and Hf leads to a major reduction in the thermal conductivity and an enhancement of the Seebeck coefficient. The observed maximum Seebeck coefficient, minimum electrical resistivity, and minimum thermal conductivity at about 820 K are -206 μV K-1, 0.71 mΩ cm, and 5.13 W m-1 K-1, respectively. In addition, the dimensionless figure of merit is about 0.92 at about 820 K with a Ti content at x = 0.3.
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U2 - 10.1016/j.jallcom.2010.02.131
DO - 10.1016/j.jallcom.2010.02.131
M3 - Article
AN - SCOPUS:77950859050
VL - 496
SP - 620
EP - 623
JO - Journal of the Less-Common Metals
JF - Journal of the Less-Common Metals
SN - 0925-8388
IS - 1-2
ER -