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Glass Physics and Chemistry

, Volume 44, Issue 2, pp 100–107 | Cite as

Synthesis and Thermoelectric Properties of Ceramics Based on Bi2Ca2Co1.7O y Oxide

  • A. I. Klyndyuk
  • N. S. Krasutskaya
  • E. A. Chizhova
Article
  • 21 Downloads

Abstract

Layered ceramics based on bismuth–calcium cobaltite with varied cobalt oxide contents is synthesized by the solid-phase method, the ceramics phase composition is determined, and the microstructure, thermal expansion, electroconductivity, and thermal electromotive force are investigated. The formation of just one compound, ternary oxide composed of Bi2Ca2Co1.7O y , is established within the quasi-binary Bi2Ca2O5–CoO z system. The effect of the cobalt oxide content on the Bi2Ca2Co x O y ceramics’ microstructure and physicochemical properties is analyzed. The single-phased ceramic sample Bi2Ca2Co1.7O y demonstrated the highest power factor value among all the investigated samples—26.0 μW/(m K2) at a temperature of 300 K. This sample showed the lowest value of the thermal linear expansion coefficient of 9.72 × 10–6 K–1.

Keywords

layered bismuth–calcium cobaltite oxide thermoelectric materials thermal expansion electroconductivity thermal electromotive force power factor 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. I. Klyndyuk
    • 1
  • N. S. Krasutskaya
    • 1
  • E. A. Chizhova
    • 1
  1. 1.Belarusian State Technological UniversityMinskRepublic of Belarus

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