西华大学学报（自然科学版）2025，Vol.44Issue(5)：17-22,38,7.DOI:10.12198/j.issn.1673-159X.4966
TiFeNiSb基half-Heusler合金的热电性能分析
Study on Thermoelectric Properties of TiFeNiSb-based Half-Heusler Alloy
摘要
Abstract
Half-Heusler alloy has attracted much attention in the field of medium and high temperat-ure thermoelectric power generation because of its good thermoelectric properties,good mechanical proper-ties and high thermal stability.In order to understand the influence of changing the ratio of Fe to Ni on the thermoelectric properties of samples of half-Heusler alloy TiFexNi1-xSb(x=0.4,0.5,0.6),the samples were prepared by arc melting,high-energy ball milling and fast DC hot pressing,and their conductivity types and carrier concentrations were determined respectively.The experimental results show that the carrier concen-tration at room temperature can be increased by changing the ratio of Fe to Ni in the alloy,and the carrier concentration at room temperature of TiFe0.6Ni0.4Sb sample is the highest,which is 5.33×1021 cm3,and lower lattice thermal conductivity at 973 K of about 3.18 W m-1 K-1.It shows that changing the proportion of Fe and Ni elements in the alloy is an effective method to optimize thermoelectric properties.关键词
half-Heusler/热电性能/TiFeNiSb/比例调控Key words
half-Heusler/thermoelectric performance/TiFeNiSb/proportional control分类
通用工业技术引用本文复制引用
刘行,黄丽宏..TiFeNiSb基half-Heusler合金的热电性能分析[J].西华大学学报（自然科学版）,2025,44(5):17-22,38,7.基金项目
四川省自然科学基金青年科学基金项目(2025ZNSFSC1336). （2025ZNSFSC1336）
