Understanding Anisotropy and Its Relations with Sintering Conditions on Thermoelectric Transport Properties of n-Type Mg3Sb2-Based Materials

被引：2
作者：
Gao, Xingchen [1 ]
Hu, Lianglu [1 ]
Chauhan, Nagendra Singh [2 ]
Shan, Zhaohui [3 ]
Zhang, Qiang [1 ]
Fan, Jianfeng [1 ]
Miyazaki, Yuzuru [4 ]
机构：
[1] Taiyuan Univ Technol, Key Lab Interface Sci Engn Adv Mat, Minist Educ, Taiyuan 030024, Peoples R China
[2] Natl Inst Mat Sci, Res Ctr Mat Nanoarchitecton, Tsukuba 3050044, Japan
[3] Taiyuan Univ Technol, Coll Phys & Optoelect, Taiyuan 030024, Peoples R China
[4] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Sendai 9808579, Japan
来源：
ACS APPLIED ENERGY MATERIALS | 2024年 / 7卷 / 03期
关键词：
sintering; texture; electrical properties; thermal properties; thermoelectrics; PERFORMANCE; SCATTERING;
D O I：
10.1021/acsaem.3c02703
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In the realm of bulk materials powder processing, the spark plasma sintering (SPS) technique stands out as a pivotal method for rapidly attaining higher densification. This study delves into understanding the grain size and texture resulting from unidirectional pressing during SPS in high-performance n-type Mg3Sb2-based materials. Our finding reveals that a larger grain size and a relatively robust (001)-plane texture, developed during SPS pressing, synergistically enhance the electrical conductivity and figure of merit ZT in the direction perpendicular to SPS pressing (perpendicular to P) compared to the parallel direction (parallel to P). Additionally, the texturing effect was evaluated and correlated to transport properties.
引用
收藏
页码：862 / 867
页数：6
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