山东科学2024，Vol.37Issue(2)：47-54,8.DOI:10.3976/j.issn.1002-4026.20230101
Nb掺杂对微波制备TiCoSb Half-Heusler合金热电性能的提升
Enhanced thermoelectric properties of Nb-doped TiCoSb Half-Heusler alloys prepared by microwave method
摘要
Abstract
Along with the long preparation cycle time and high cost of conventional preparation methods,the inherent high thermal conductivity of TiCoSb Half-Heusler alloy limited its commercial application.Herein,Ti1-xNbxCoSb Half-Heusler alloys with low thermal conductivity were successfully prepared by microwave synthesis combined with rapid hot-pressing sintering,which substantially shortened the preparation cycle and increased the density of TiCoSb Half-Heusler alloys.Furthermore,we studied the effects of Nb substitution at Ti sites on the phase composition,composition distribution,and thermoelectric transport properties of Ti1-xNbx CoSb Half-Heusler thermoelectric materials.Additionally,the figure of merit(ZT)of Ti1-xNbx CoSb samples were considerably optimized under the combined effects of increasing power factor and decreasing lattice thermal conductivity.The results showed that the Ti0 93 Nb0 07CoSb sample had a maximum ZT of 0.1 at 725 K,which was two orders of magnitude higher than that of the TiCoSb sample prepared by the same process.关键词
Half-Heusler合金/Ti1-xNbxCoSb/微波/热电性能Key words
Half-Heusler/Ti1-xNbx CoSb/microwave/thermoelectric properties分类
电子信息工程引用本文复制引用
张瑞鹏,孔建彪,侯仰博,薄琳,王文莹,王兴隆,赵令浩,祝军亮,赵德刚..Nb掺杂对微波制备TiCoSb Half-Heusler合金热电性能的提升[J].山东科学,2024,37(2):47-54,8.基金项目
国家自然科学基金(51772132) （51772132）
济南市科研带头人工作室(2021GXRC082) （2021GXRC082）
