Thermoelectric Properties of n-type Full-Heusler Fe_(2-2x)Co_(2x) TiSn Prepared by an Ultra-fast Synthesis Process  

作　　者：ZHAO Dongyan CHEN Yanning WANG Yubo ZHANG Haifeng FU Zhen WANG Shuaipeng YU Wen DU Jian WANG Wenhe QIU Junhao YAN Yonggao 赵东艳;陈艳宁;WANG Yubo;ZHANG Haifeng;FU Zhen;WANG Shuaipeng;YU Wen;DU Jian;WANG Wenhe;QIU Junhao;鄢永高(Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade,Beijing Smart-Chip Microelectronics Technology Co.,Ltd.,Beijing 100192,China;Beijing Chip Identification Technology Co.,Ltd.,Beijing,102200,China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade,Beijing Smart-Chip Microelectronics Technology Co.,Ltd.,Beijing 100192,China [2]Beijing Chip Identification Technology Co.,Ltd.,Beijing,102200,China [3]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2021年第4期497-504,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Laboratory Open Fund of Beijing Smart-chip Microelectronics Technology Co.,Ltd。

摘　　要：Full-Heusler alloy Fe_(2)TiSn was predicted to be a potential thermoelectric material with high mechanical properties and stability.Fe_(2)TiSn was usually prepared by arc-melting followed by annealing for 2 weeks,which takes a long time and consumes a large amount of energy.In this paper,Fe_(2)TiSn was prepared by an ultra-fast method,self-propagating high-temperature synthesis (SHS) combined with spark plasma sintering.The bulk materials with uniform element distribution,well controlled composition and relative densities of over 97.5% were prepared.The undoped Fe_(2)TiSn samples show p-type transport behavior.Co was heavily doped at the Fe site to prepare n-type Fe_(2-2x)Co_(2x) TiSn samples.The thermoelectric properties measurements carried out on the Co-doped samples show a highest ZT=0.02 at 300 K,which is about tripe the performance of the pristine Fe_(2)TiSn.This study provides a new approach for the rapid and low-cost preparation of full-Heusler thermoelectric materials.

关 键 词：THERMOELECTRIC full-Heusler Fe2TiSn SHS thermoelectric properties 

分 类 号：TB34[一般工业技术—材料科学与工程]