Experimenting with hot isostatically pressed (HIP) nano grained bismuth-telluride-based alloys

Jouko Virta, Jyrki Tervo

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Hot Isostatic Pressing (HIP) is was used for compaction of nano grained bismuth-telluride samples and results were compared to Spark Plasma Sintered (SPS) samples of the same materials. The powders were essentially the same as presented by Vasilevskiy1 et al, 2010. The (BixSb1-x)2(TeySe1-y)3 thermoelectric alloys studied in this article were produced by mechanical alloying under an inert atmosphere. The p-type alloy composition corresponds to x = 0.2, y = 1 and for the n-type material x = 0.95, y = 0.95. For HIP treatment the n- and p-type powders were encapsulated in copper cylinders under protective argon atmosphere. The HIP temperature was kept low to avoid excess grain growth of the materials. The electrical conductivity, carrier mobility, carrier concentration and Seebeck coefficient of HIP and SPS compacted materials were measured and compared.
Original languageEnglish
Title of host publication9th European Conference on Thermoelectrics ECT2011
EditorsK.M. Paraskevopoulos , E. Hatzikraniotis
PublisherAmerican Institute of Physics AIP
Pages544-547
ISBN (Print)978-0-7354-1048-0
DOIs
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication

Publication series

SeriesAIP Conference Proceedings
Number1
Volume1449

Keywords

  • hot isostatic pressing
  • Bismuth-Tellunde properties

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    Virta, J., & Tervo, J. (2011). Experimenting with hot isostatically pressed (HIP) nano grained bismuth-telluride-based alloys. In K. M. Paraskevopoulos , & E. Hatzikraniotis (Eds.), 9th European Conference on Thermoelectrics ECT2011 (pp. 544-547). American Institute of Physics AIP. AIP Conference Proceedings, No. 1, Vol.. 1449 https://doi.org/10.1063/1.4731614