Kim, HJ Kim, HC Hyun, DB Oh, TS 2024-01-21T17:39:52Z 2024-01-21T17:39:52Z 2022-01-10 1998-01 1598-9623 https://pubs.kist.re.kr/handle/201004/143400 P-type (Bi0.25Sb0.75)(2)Te-3 powders were fabricated by melting/grinding and mechanical alloying processes. Thermoelectric properties of the hot-pressed (Bi0.25Sb0.75)(2)Te-3 were characterized-with the powder processing method, powder size, hot pressing temperature, and the amount of excess-Te dopant. Specimens fabricated by melting/grinding exhibited lower Seebeck coefficient, lower electrical resistivity and higher thermal conductivity, compared to the specimens prepared by mechanical alloying. 3 wt.% excess Te-doped (Bi0.25Sb0.75)(2)Te-3, fabricated by melting/grinding and hot pressing at 550 degrees C, exhibited a figure-merit of 3.2 x 10(-3)/K. For 1 wt.% excess Te-doped specimen prepared by mechanical alloying and hot pressing at 550 degrees C, a figure-merit of 3.05 x 10(-3)/K was obtained. English KOREAN INST METALS MATERIALS BI2TE3 Thermoelectric properties of p-type (Bi,Sb)(2)Te-3 alloys fabricated by the hot pressing method Article 10.1007/BF03026068 1 METALS AND MATERIALS INTERNATIONAL, v.4, no.1, pp.75 - 81 METALS AND MATERIALS INTERNATIONAL 4 1 75 81 scie scopus 000072617000010 2-s2.0-0040086351 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article BI2TE3 bismuth antimony telluride thermoelectric materials powder processing mechanical alloying hot pressing