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http://dx.doi.org/10.3740/MRSK.2004.14.11.802

Thermoelectric Properties of Skutterudite CoSb3 Fabricated by Mechanical Alloying Process  

Choi Moon-Kwan (Department of Materials Science & Engineering/Nano Technology Lab., Chungju National University)
Cho Hyoung-Won (Department of Materials Science & Engineering/Nano Technology Lab., Chungju National University)
Ur Soon-Chul (Department of Materials Science & Engineering/Nano Technology Lab., Chungju National University)
Kim Il-Ho (Department of Materials Science & Engineering/Nano Technology Lab., Chungju National University)
Publication Information
Korean Journal of Materials Research / v.14, no.11, 2004 , pp. 802-806 More about this Journal
Abstract
Skutterudite $CoSb_3$ powders were produced by mechanical alloying (MA) of elemental powders using a nominal stoichiometric composition. Annealing of MA powders under specific condition led to a complete phase transformation to a semiconducting ${\delta}-CoSb_3$. Single phase $CoSb_3$ was successfully produced by vacuum hot pressing using MA powders without subsequent annealing. Phase transformations during mechanical alloying and hot pressing were systematically investigated using XRD and SEM. Thermoelectric properties as a function of temperature were evaluated for the hot pressed specimens and compared with results of analogous studies.
Keywords
mechanical alloying; thermoelectric; hot pressing; skutterudite;
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