Thermoelectric properties of Fe/sub 1-x/Ni/sub x/Sb/sub 3/ ribbons
Thermoelectric properties of Fe/sub 1-x/Ni/sub x/Sb/sub 3/ ribbons
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Fe/sub 1-x/Ni/sub x/Sb/sub 3/带材的热电性能
DOI：
10.1109/ict.1997.667153
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
S. Kondo
中科院分区：
文献类型：
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作者：
M. Hasaka;H. Kitagawa;K. Matano;T. Morimura;S. Kondo
本文研究了x=0 ~ 1.0范围内Fe/sub - 1-x/Ni/sub -x/ Sb/sub - 3/带的显微结构和热电性能。在旋转铜辊上以10 m/s的表面速度铸造，然后在873 K下退火3.6 ks。通过x射线衍射和透射电镜观察对其微观结构进行了研究。在x=0.45以下和0.55以上，出现了CoAs/sub - 3/型结构，即滑石结构，以及FeSb/sub - 2/、NiSb/sub - 2/和Sb等结构。在x=0.45 ~ 0.55之间，只有角方矿出现，其他结构均消失。在300 ~ 670 K的真空条件下测量了热电动势和电阻率。x<0.5时半导体的热电动势为p型，x<0.5时半导体的热电动势为n型。电阻率在x=0.5处达到最大值。在x=0.5时，电阻率随x的变化曲线不对称。在与x=0.5偏差相同的情况下，x<0.5的电阻率大于x>0.5。由热电动势和电阻率估算的功率因数在x=0.4和x=0.6时达到最大值，在300 K时x=0.5时较小。
This paper deals with the microstructures and thermoelectric properties of Fe/sub 1-x/Ni/sub x/Sb/sub 3/ ribbons between x=0 and 1.0. The ribbons were fabricated by casting on a rotating copper roll with the surface velocity of 10 m/s, and then annealed for 3.6 ks at 873 K. The microstructures were investigated by means of X-ray diffraction measurements and transmission electron microscopic observations. The CoAs/sub 3/ type of structure, namely skutterudite structure, appeared as well as the other structures of FeSb/sub 2/, NiSb/sub 2/ and Sb below x=0.45 and above 0.55. Only the skutterudite appeared and the other structures disappeared between x=0.45 and 0.55. The thermoelectromotive force and electrical resistivity were measured under a vacuum from 300 K to 670 K. The thermoelectromotive force was of p-type of semiconductor for x<0.5 and of n-type for x>0.5. The electrical resistivity recorded a maximum at x=0.5. The curve of electrical resistivity versus x was asymmetric at x=0.5. The electrical resistivity was larger for x<0.5 than for x>0.5 at the same deviation from x=0.5. The power factor, which was estimated from the thermoelectromotive force and electrical resistivity, reached to maximums at x=0.4 and x=0.6, and was small at x=0.5 at 300 K.