naa a22 4500 510801951 CHVBK 20180411083359.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-012-2362-5 doi (NATIONALLICENCE)springer-10.1007/s11664-012-2362-5 Design of Ball-Milling Experiments on Bi2Te3 Thermoelectric Material [Elektronische Daten] [A. Kanatzia, Ch. Papageorgiou, Ch. Lioutas, Th. Kyratsi] In this work, factorial ball-milling experiments have been applied to Bi2Te3 material, for the first time, aiming to investigate the effect of the main process parameters on the structural features and thermoelectric properties of the ball-milled materials. The selected main parameters were the duration of milling, the speed, and the ball-to-material ratio. Analysis suggests a strong effect of the speed and duration of processing, whereas the ball-to-material ratio is of minor importance. This approach is advantageous for better understanding of the milling mechanism and the importance of the role of each independent parameter as well as their interaction. All experiments led to nanocrystalline Bi2Te3, whose structural features were studied. The nanocrystalline size was estimated based on x-ray diffraction analysis, while transmission electron microscopy (TEM) studies were also performed to confirm the presence of nanoscale crystals. A mathematical model was developed based on statistical analysis for prediction of the crystalline size and the Seebeck coefficient of the nanopowders. The thermoelectric properties were also investigated on selected, highly dense pellets fabricated via hot-pressing of the nanopowders. TMS, 2012 ANOVA nationallicence regression equation nationallicence nanostructured materials nationallicence thermoelectric properties nationallicence Kanatzia A. Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678, Nicosia, Cyprus aut Papageorgiou Ch Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678, Nicosia, Cyprus aut Lioutas Ch Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece aut Kyratsi Th Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678, Nicosia, Cyprus aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1652-1660 0361-5235 42:7<1652 2013 42 11664 https://doi.org/10.1007/s11664-012-2362-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2362-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kanatzia A. Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678, Nicosia, Cyprus aut NATIONALLICENCE 700 1- Papageorgiou Ch Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678, Nicosia, Cyprus aut NATIONALLICENCE 700 1- Lioutas Ch Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece aut NATIONALLICENCE 700 1- Kyratsi Th Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678, Nicosia, Cyprus aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1652-1660 0361-5235 42:7<1652 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer