|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Technical Division Student Poster Competition
||SPG-12: Microstructure and Texture Behavior of P-type Bi2Te3-Sb2Te3 Alloy by Hot Extrusion
||Hyo-Sang Yoo, YongHo Kim, HyeonTaek Son
|On-Site Speaker (Planned)
Thermoelectric materials have attracted much attention in the field of materials science during the last years. Bi2Te3 and Sb2Te3 are good conventional thermoelectric materials. These materials have the potential to act as thermoelectric devices, that directly interconvert the energy between the heat and electricity. Thermoelectric material is hard to apply to thermoelectric material market due to manufacturing mass production. However, it can manufacture mass production by using extrusion. The purpose of this research is to study the applicability of the powder metallurgy and extrusion process to thermoelectric material. The Bi2Te3–Sb2Te3 compounds were prepared by a gas atomization at 600°C and gas pressure of 10Bar. Extrusion of Bi2Te3–Sb2Te3 alloys carried out at temperature of 330, 380 and 430°C and extrusion ratio of 10:1. For the microstructural analysis of the extruded specimen, optical microscopy (OM), scanning electron microscope (SEM; JSM7000F), electron backscatter diffraction (EBSD), and X-ray diffraction (XRD).