Ultra-fast fabrication of bulk ZrNiSn thermoelectric material through self-propagating high-temperature synthesis combined with in-situ quick pressing. (May 2019)

• Record Type: Journal Article
• Authors: Hu, Tiezheng; Cao, Weiqiang; Yang, Dongwang; Yan, Yonggao; Cao, Yu; Zhang, Tingting; Su, Xianli; Liu, Wei; Poudeu-Poudeu, Pierre; Tang, Xinfeng
• Is Part Of: Scripta materialia. Number 165(2019)
• Page Start: 140
• Page End: 144
• Publication Date: 2019-05
• Subjects: Thermoelectric materials -- SHS -- Half-Heusler; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.02.031
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The conventional fabrication of bulk thermoelectric materials usually involves time and energy consuming steps including melting, annealing and sintering et al, which restricts the large-scale application. Herein, high thermoelectric performance ZrNiSn bulks were synthesized by one step self-propagating high-temperature synthesis combining with in-situ quick pressing (SHS-QP). The correlation among SHS process, QP process and the critical pressure, is systematically investigated. The reduced grain size due to non-equilibrium feature of SHS-QP leads to a significant reduction in the thermal conductivity and a high figure of merit ZT ~ 0.7. Graphical abstract: Unlabelled Image