铸造技术2012，Vol.33Issue(11)：1251-1253,3.
Sb2Se3热电材料的真空熔炼合成及微结构研究
Synthesis of Sb2Se3 Thermoelectric Material by Vacuum Melting and Its Microstructure
摘要
Abstract
Sb2Se3 powders were fabricated by the methods of sealing high pure Sb and Se in a vacuum quartz tube and smelt at 800 ℃ for 12h. Sb2Se3 bulk materials were prepared by hot-press sintering at 470 ℃ under 60MPa for 0.5 h in vacuum. Phase structure and microscopic topography of the samples were characterized by XRD and SEM. The results show that the diffraction peaks of the powders alloyed in vacuum and the bulk materials by hot-press sintering mainly correspond to the standard Sb2Se3 reference code (01-072-1184). The bulk samples of Sb2Se3 have a plenty of sheet layer structures on the cross section parallel to the hot-press direction, and a few coarse sheet layers. Sheet layer structures about 1 u,m in thickness have preferential growth along a certain direction. On the cross section perpendicular to the hot-press direction,the microstructures are mainly sheet layers with a few nearly spherical structure. However, sheet layer structures are short and thin with a few coarseness, and have heterogeneous structures, the atomic percentage of the elements Sb and Se in the bulk materials by hot-press sintering are 40.68% and 59.32%, respectively, approaching 2 : 3.关键词
真空熔炼/热压烧结/Sb2Se3/热电材料Key words
vacuum melting/ hot-press sintering/ Sb2Se3/ thermoelectric material分类
矿业与冶金引用本文复制引用
胡孔刚,段兴凯,满达虎,金海霞..Sb2Se3热电材料的真空熔炼合成及微结构研究[J].铸造技术,2012,33(11):1251-1253,3.基金项目
国家自然科学基金资助项目(51161009) （51161009）
