Journal
SCRIPTA MATERIALIA
Volume 128, Issue -, Pages 53-56Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.10.010
Keywords
Solid state reaction; Mg2Si; Hot pressing; Spark plasma sintering; Reproducibility
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Funding
- Hyundai Motor Company [2015-11-0146]
- National Research Foundation of Korea (NRF) Grant - Korea government (MSIP) [2014R1A2A1A10053869]
- Priority Research Centers Program [2009-0093823]
- Industrial Fundamental Technology Development Program - Ministry of Trade, Industry and Energy (MOTIE) of Korea [10052977]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10052977] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2014R1A2A1A10053869] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Herein, we reported a synthesis technique based on the up-scaled solid state reaction for Al and Bi co-doped Mg2Si polycrystalline bulks and investigated their thermoelectric transport properties. The powders (similar to 1 kg/batch) were synthesized for mass production by using the solid state reaction, and the polycrystalline bulks were consolidated with a diameter of 25 mm and thickness of 3 mm using hot pressing and spark plasma sintering techniques. Both the hot pressed and the spark plasma sintered bulks showed good reproducibility and positional uniformity of the thermoelectric properties and the highest ZT value of 0.98 was obtained at 873 K. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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