Mechanical properties of nanostructured thermoelectric materials α-MgAgSb

SCRIPTA MATERIALIA

卷:127

Article

Liu, Zihang^1,2,3,4  Gao, Weihong^1,2  Meng, Xianfu^1,2  Li, Xiaobo^1,2  Mao, Jun^3,4,5  Wang, Yumei^3,4,6  Shuai, Jing^3,4  Cai, Wei^1,2  Ren, Zhifeng^3,4  Sui, Jiehe^1,2 

[1] Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[3] Univ Houston, Dept Phys, Houston, TX 77204 USA

[4] Univ Houston, TcSUH, Houston, TX 77204 USA

[5] Univ Houston, Dept Mech Engn, Houston, TX 77204 USA

[6] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

关键词: Thermoelectric materials;    Mechanical properties;    Nanostructure;    MgAgSb;   

DOI  :  10.1016/j.scriptamat.2016.08.037

来源: Elsevier

【 摘 要 】

Mechanical robustness plays an important role in the manufacturing and assembling processes as well as reliable operation for thermoelectric devices. Herein, we first give a detailed study on the mechanical properties of nano structured alpha-MgAgSb. The corresponding Young's modulus, nanoindentation hardness, compressive strength, and fracture toughness are 55.0 GPa, 3.3 GPa, 389.6 MPa, and 1.1 MPa m(1/2), respectively, which have a close relationship with the intricate microstructure. Compared with other p-type thermoelectric materials, the good mechanical properties of nanostructured alpha-MgAgSb further highlight the realistic prospect for power generation. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free