Ceria based protective coatings for steel interconnects prepared by spray pyrolysis

Dagmara Szymczewska, Sebastian Molin, Ming Chen, Peter Vang Hendriksen, Piotr Jasinski

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Abstract

Stainless steels can be used in solid oxide fuel/electrolysis stacks as interconnects. For successful long term operation they require protective coatings, that lower the corrosion rate and block chemical reactions between the interconnect and adjacent layers of the oxygen or the hydrogen electrode. One of the promising coating materials for the hydrogen side is ceria. Using standard sintering techniques, ceria sinters at around 1400°C which even for a very short exposure would destroy the interconnect. Therefore in this paper a low temperature deposition method, i.e. spray pyrolysis, is used to deposit thin (~400 nm), continuous CeO2 layers on Crofer 22 APU steel substrates. Influence of the deposition parameters on layer quality is elucidated in this work.
Original languageEnglish
JournalProcedia Engineering
Volume98
Pages (from-to)93 – 100
ISSN1877-7058
DOIs
Publication statusPublished - 2014
Event11th International Symposium on Systems with Fast Ionic Transport - Gdansk-Sobieszewo, Poland
Duration: 25 Jun 201429 Jun 2014
Conference number: 11

Conference

Conference11th International Symposium on Systems with Fast Ionic Transport
Number11
CountryPoland
CityGdansk-Sobieszewo
Period25/06/201429/06/2014

Bibliographical note

© 2014 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license
(http://creativecommons.org/licenses/by-nc-nd/3.0/).

Keywords

  • Interconnect
  • Ceria
  • High temperature corrosion
  • Spray pyrolysis

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