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Voronezh, Russia

Prilepo Yu.P.,RIF Corporation | Pustovalov A.A.,ZAO Scientific and Production Enterprise BIAPOS | Sinyavskiy V.V.,Korolev Rocket and Space Corporation Energia | Sudak N.M.,RIF Corporation | Yatsenko O.B.,Voronezh State University
Thermal Engineering (English translation of Teploenergetika) | Year: 2012

The present work deals with the feasibility of developing a radioisotope thermoelectric power generator (RTPG) capable of operating unattended in outer space over a period of several decades, among other things, on the basis of chemical compounds that occur in meteoric matter. The possibilities for solving problems related to the production of three-dimensional materials and to thermoelement interconnections are discussed. The implementation of nanotechnology will allow one to achieve an increase in the efficiency of a RTPG by 15% and higher. © 2012 Pleiades Publishing, Ltd.

Ivanova L.D.,RAS Institute of Metallurgy | Petrova L.I.,RAS Institute of Metallurgy | Granatkina Yu.V.,RAS Institute of Metallurgy | Leontyev V.G.,RAS Institute of Metallurgy | And 6 more authors.
Inorganic Materials | Year: 2013

This paper reports the preparation and characterization of pressed microcrystalline materials based on a p-type Bi0.5Sb 1.5Te3 solid solution produced from a melt-spun powder. We have examined the effect of melt spinning conditions (temperature, disk rotation rate, and purity of the inert gas in the heat treatment chamber) on the particle size and morphology of the powders and the microstructure and thermoelectric properties of hot-pressed samples and investigated the mechanical properties (compression and bend tests) of materials prepared by various methods. The thermoelectric properties of the materials (thermopower, electrical conductivity, and thermal conductivity) were studied at room temperature and in the range 100-700 K. The highest thermoelectric figure of merit ZT of the materials prepared by pressing the melt-spun powder was 1.3, whereas the ZT of the materials prepared by the other methods did not exceed 1.1. The higher ZT of the materials studied was due to their lower lattice thermal conductivity and slightly higher thermopower. © 2013 Pleiades Publishing, Ltd.

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