Electrophoretic co-deposition of Fe2O3 and Mn1,5Co1,5O4: processing and oxidation performance of Fe-doped Mn-Co coatings for solid oxide cell interconnects  

E. Zanchi*, B. Talic, A. G. Sabato, S. Molin, A. R. Boccaccini, F. Smeacetto

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Fe-doped Mn1,5Co1,5O4 coatings on Crofer22APU were processed by an electrophoretic co-deposition method and the corrosion resistance was tested at 750 °C up to 2000 hours.

The “in-situ” Fe-doping of the manganese cobalt spinel was achieved by electrophoretic co-deposition of Mn1,5Co1,5O4 and Fe2O3 powders followed by a two-step reactive sintering treatment. The effects on the coating properties of two different Fe-doping levels (5 and 10 wt.% respectively) and two different temperatures of the reducing treatment (900 and 1000 °C) are discussed. Samples with Fe-doped coatings demonstrated a lower parabolic oxidation rate and thinner oxide scale in comparison with both the undoped Mn1,5Co1,5O4 spinel coating and bare Crofer 22 APU. The best corrosion protection was achieved with the combined effect of Fe-doping and a higher temperature of the reducing step at 1000 °C.

Original languageEnglish
JournalJournal of the European Ceramic Society
Volume39
Issue number13
Pages (from-to)3768-3777
ISSN0955-2219
DOIs
Publication statusPublished - 2019

Keywords

  • Electrophoretic deposition
  • Ceramic coating
  • Solid oxide cell

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