Mechanical properties of nanostructured thermoelectric materials α-MgAgSb

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• 作者：Zihang Liu^a ; ^b ; Weihong Gao^a ; Xianfu Meng^a ; Xiaobo Li^a ; Jun Mao^b ; ^c ; Yumei Wang^b ; ^d ; Jing Shuai^b ; Wei Cai^a ; Zhifeng Ren^b ; ^{zren@uh.edu" class="auth_mail" title="E-mail the corresponding author} ; Jiehe Sui^a ; ^{suijiehe@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Thermoelectric materials ; Mechanical properties ; Nanostructure ; MgAgSb
• 刊名：Scripta Materialia
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：127
• 期：Complete
• 页码：72-75
• 全文大小：1014 K

文摘

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 nanostructured α-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 α-MgAgSb further highlight the realistic prospect for power generation.