naa a22 4500 510801757 CHVBK 20180411083358.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-013-2482-6 doi (NATIONALLICENCE)springer-10.1007/s11664-013-2482-6 Synthesis and Characterization of Al-Doped Mg2Si Thermoelectric Materials [Elektronische Daten] [S. Battiston, S. Fiameni, M. Saleemi, S. Boldrini, A. Famengo, F. Agresti, M. Stingaciu, M.S. Toprak, M. Fabrizio, S. Barison] Magnesium silicide (Mg2Si)-based alloys are promising candidates for thermoelectric (TE) energy conversion for the middle to high range of temperature. These materials are very attractive for TE research because of the abundance of their constituent elements in the Earth's crust. Mg2Si could replace lead-based TE materials, due to its low cost, nontoxicity, and low density. In this work, the role of aluminum doping (Mg2Si:Al=1:x for x=0.005, 0.01, 0.02, and 0.04 molar ratio) in dense Mg2Si materials was investigated. The synthesis process was performed by planetary milling under inert atmosphere starting from commercial Mg2Si pieces and Al powder. After ball milling, the samples were sintered by means of spark plasma sintering to density >95%. The morphology, composition, and crystal structure of the samples were characterized by field-emission scanning electron microscopy, energy-dispersive spectroscopy, and x-ray diffraction analyses. Moreover, Seebeck coefficient analyses, as well as electrical and thermal conductivity measurements were performed for all samples up to 600°C. The resultant estimated ZT values are comparable to those reported in the literature for these materials. In particular, the maximum ZT achieved was 0.50 for the x=0.01 Al-doped sample at 600°C. TMS, 2013 Magnesium silicide nationallicence aluminum nationallicence thermoelectricity nationallicence Battiston S. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut Fiameni S. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut Saleemi M. Functional Materials Division, KTH Royal Institute of Technology, Kista-Stockholm, Sweden aut Boldrini S. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut Famengo A. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut Agresti F. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut Stingaciu M. Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden aut Toprak M.S. Functional Materials Division, KTH Royal Institute of Technology, Kista-Stockholm, Sweden aut Fabrizio M. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut Barison S. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1956-1959 0361-5235 42:7<1956 2013 42 11664 https://doi.org/10.1007/s11664-013-2482-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-013-2482-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Battiston S. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut NATIONALLICENCE 700 1- Fiameni S. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut NATIONALLICENCE 700 1- Saleemi M. Functional Materials Division, KTH Royal Institute of Technology, Kista-Stockholm, Sweden aut NATIONALLICENCE 700 1- Boldrini S. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut NATIONALLICENCE 700 1- Famengo A. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut NATIONALLICENCE 700 1- Agresti F. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut NATIONALLICENCE 700 1- Stingaciu M. Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden aut NATIONALLICENCE 700 1- Toprak M.S. Functional Materials Division, KTH Royal Institute of Technology, Kista-Stockholm, Sweden aut NATIONALLICENCE 700 1- Fabrizio M. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut NATIONALLICENCE 700 1- Barison S. CNR-IENI, Corso Stati Uniti 4, 35127, Padua, Italy aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1956-1959 0361-5235 42:7<1956 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer