Preparation and characterisation of iron substituted Mn1.7Cu1.3-xFexO4 spinel oxides (x = 0, 0.1, 0.3, 0.5)

Justyna Ignaczak*, Yevgeniy Naumovich, Karolina Górnicka, Jan Jamroz, Wojciech Wróbel, Jakub Karczewski, Ming Chen, Piotr Jasiński, Sebastian Molin

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Spinel oxides with the general formula Mn1.7Cu1.3-xFexO4 (x= 0, 0.1, 0.3, 0.5) were prepared and evaluated in this work for their properties at high temperatures. The effect of partially substituting Cu by Fe has not been studied so far for this group of materials and is thus evaluated in this work. Mn1.7Cu1.3-xFexO4 powders were synthesised by a soft chemistry process and studied in terms of crystallographic phase analysis, electrical conductivity, thermal expansion, and sinterability behaviour. The results show that the Fe content has a significant influence on the phase composition and the resulting properties. Characterisation of the dilatometry and conductivity coupled with XRD phase analysis across a wide temperature range allowed the relations between the materials properties and compositions to be observed. The results indicate that Mn1.7Cu0.8Fe0.5O4 is a promising material for use as a protective coating for interconnects in intermediate temperature Solid Oxide Fuel Cells.

Original languageEnglish
JournalJournal of the European Ceramic Society
Volume40
Issue number15
Pages (from-to)5920-5929
ISSN0955-2219
DOIs
Publication statusPublished - 2020

Keywords

  • Ceramic
  • micorstructure
  • spinel
  • thermal expansion

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