Preparation and Thermoelectric Properties of Zr_(1-x)Ti_xNiSn_(0.975)Sb_(0.025) Half-Heusler Alloys |
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| Authors: | Cui Yu Yun Zhang Tiejun Zhu Guangyu Jiang Ji Xu Bo Zhao Xinbing Zhao State Key Laboratory of Silicon Materials |
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| Affiliation: | Cui Yu,Yun Zhang,Tiejun Zhu,Guangyu Jiang,Ji Xu,Bo Zhao , Xinbing Zhao State Key Laboratory of Silicon Materials,Department of Materials Science , Engineering,Zhejiang University,Hangzhou 310027,China |
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| Abstract: | Zr1-xTixNiSn0.975Sb0.025 (x=0, 0.15, 0.25, 0.5) half-Heusler thermoelectric materials have been prepared by levitation melt, melt spinning and hot pressing. X-ray diffraction analysis and scanning electron microscopy observation showed that nearly single phase half-Heusler compounds were obtained for the levitation-melted ingots. The effects of Ti substitution and grain refinement by melt spinning have been studied. It is found that both the Ti substitution on the Zr site and the grain refinement can reduce... |
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| Keywords: | Thermoelectric materials Thermoelectric properties Half-Heusler alloys Levitation melting Grain refinement |
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