Structural features and gas tightness of EB-PVD 1Ce10ScSZ electrolyte films

Research output: Contribution to journalArticlepeer-review

Authors

  • M. Andrzejczuk
  • O. Vasylyev
  • M. Brychevskyi
  • L. Dubykivskyi
  • A. Smirnova
  • M. Lewandowska
  • K. J. KurzydlOwski
  • R. Steinberger-Wilckens
  • J. Mertens
  • V. Haanappel

Colleges, School and Institutes

External organisations

  • Institute for Problems of Materials Science National Academy of Sciences in Ukraine
  • Forschungszentrum Jülich (FZJ)
  • Warsaw University of Technology
  • Frantcevych Institute for Problems of Materials Science
  • Environmental Earth Science
  • Eastern Connecticut State University
  • Forschungszentrum Julich GmbH
  • Institute of Energy and Climate Research

Abstract

The structure of Ceria doped Scandia Stabilized Zirconia (1Ce10ScSZ) electrolyte film deposited by EB-PVD (Electron Beam-Physical Vapour Deposition) technique on NiO-ZrO 2 substrate was characterized by electron microscopy. The highly porous substrate was densely covered by deposited film without any spallation. The produced electrolyte layer was of a columnar structure with bushes, bundles of a diameter up to 30 um and diverse height. Between the columns, delamination cracks of few microns length were visible. The annealing of zirconia film at 1000 °C resulted in its densification. The columnar grains and delaminating cracks changed their shape into a bit rounded. High magnification studies revealed nanopores 5-60 nm formed along the boundaries of the columnar grains during annealing. High-quality contacts between the electrolyte film and anode substrate ensured good conductivity of the electrolyte film and high efficiency of SOFC.

Details

Original languageEnglish
Pages (from-to)170-179
Number of pages10
JournalMaterials Science - Poland
Volume30
Issue number3
Publication statusPublished - 1 Sep 2012

Keywords

  • FIB, Interface, Microstructure characterization, SOFC