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ATOMIC STRUCTURES AND METHODS OF STRUCTURAL INVESTIGATIONS
ArticleName Comparison of the structure of the Bi0.5Sb1.5Te3 thermoelectric material obtained by hot pressing and spark plasma sintering
ArticleAuthor V. T. Bublik, D. I. Bogomolov, Z. M. Dashevskiy, I. A. Drabkin, V. V. Karataev, M. G. Lavrent’ev, G. I. Pivovarov, V. B. Osvenskiy, A. I. Sorokin, N. Yu. Tabachkova
ArticleAuthorData V. T. Bublik, D. I. Bogomolov, National University of Science and Technology «MISIS»; Z. M. Dashevskiy, Ben−Gurion University, Israel; I. A. Drabkin, V. V. Karataev, M. G. Lavrent’ev, OAO Giredmet; G. I. Pivovarov, Technological Institute for Superhard and New Carbon Materials; V. B. Osvenskiy, A. I. Sorokin, OAO Giredmet; N. Yu. Tabachkova, National University of Science and Technology «MISIS».
Abstract

The structure of compact Bi0.5Sb1.5Te3 thermoelectric material specimens obtained by spark plasma sintering (the SPS method) and conventional hot pressing have been compared using X−ray diffraction and scanning electron microscopy. We show that the spark plasma sintering method does not produce a finer structure compared to hot pressing. However, the process temperatures being comparable, the quality of sintering characterized by the absence of pores and cracks and by the fracture surface fragment sizes is higher for the SPS specimens.
keywords X−ray diffraction, scanning electron microscopy, thermoelectric materials, Bi0.5Sb1.5Te3, spark plasma sintering, hot pressing.
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