ICT2014 Abstracts

Thermoelectric materials have attracted much attention due to increased demand of thermal-electrical energy conversion through thermoelectricity in the field of cooling and power generation applications in electronic devices. Bismuth telluride based alloys are known as the most effective thermoelectric materials at the room temperature ranged 200 to 450K. For the synthesis of bismuth telluride based thermoelectric materials have been used by many processes. One of many processes, mechano-chemical process (MCP) has been considered as useful process to form alloying powders because applied high-mechanical energy enhance the reactivity among chemical solutions. The present study focused on the synthesis of a bismuth-selenium-tellurium based alloyed powder with mechano-chemical process in which Bi salt, Sb salt and Te oxide raw materials are mechanically milled and chemically reacted. The synthesized powder was sintered by the spark plasma sintering. The sintered bodies of this powder were analyzed for electric and thermal properties.