| Thermoelectric Properties of CexCo4Sb12 Prepared by MA-SPS |
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| 引用本文： | 刘科高,张久兴,路清梅,刘丹敏,张隆,周美玲. Thermoelectric Properties of CexCo4Sb12 Prepared by MA-SPS[J]. 中国稀土学报(英文版), 2004, 22(3): 390-394 |
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| 作者姓名： | 刘科高 张久兴 路清梅 刘丹敏 张隆 周美玲 |
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| 作者单位： | TheKeyLaboratoryofAdvancedFunctionalMaterials,MinistryofEducation,BeijingUniversityofTechnology,Beijing100022,China |
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| 基金项目： | 国家自然科学基金，北京市教委科研项目 |
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| 摘 要： | Starting with elementary powders, thermoelectric materials CexCo4Sb12 were prepared by mechanical alloying and spark plasma sintering (MA-SPS). XRD analyses reveal that the expected major phase, named skutterudite was formed in MA process and was kept after SPS. The thermoelectric properties of MA-SPS samples including resistivity, Seebeck coefficient, power factor, thermal conductivity and the dimensionless figure of merit (ZT) were studied by varying Ce content and temperature. Depending on Ce levels, both P and N types of thermoelectric semiconductors were obtained. MA-SPS sintered Ce1.0Co4Sb12 exhibits the highest ZT in the range of 100-500℃ and the maximum ZT is found at x=1.0 and 400℃.
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| 关 键 词： | MA-SPS 机械合金化 制备 热电性能 热电金属 CexCo4Sb12 XRD 粉末冶金 稀土 |
Thermoelectric Properties of CexCo4Sb12 Prepared by MA-SPS |
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| Abstract: | Starting with elementary powders, thermoelectric materials CexCo4Sb12 were prepared by mechanical alloying and spark plasma sintering (MA-SPS). XRD analyses reveal that the expected major phase, named skutterudite was formed in MA process and was kept after SPS. The thermoelectric properties of MA-SPS samples including resistivity, Seebeck coefficient, power factor, thermal conductivity and the dimensionless figure of merit (ZT) were studied by varying Ce content and temperature. Depending on Ce levels, both P and N types of thermoelectric semiconductors were obtained. MA-SPS sintered Ce1.0Co4Sb12 exhibits the highest ZT in the range of 100～500 ℃ and the maximum ZT is found at x=1.0 and 400 ℃. |
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| Keywords: | thermoelectric material mechanical alloying spark plasma sintering CexCo4Sb12 rare earths |
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