Determination of the bonding strength in solid oxide fuel cells' interfaces by Schwickerath crack initiation test

D. N. Boccaccini, O. Sevecek, Henrik Lund Frandsen, I. Dlouhy, Sebastian Molin, Benoit Charlas, Johan Hjelm, M. Cannio, Peter Vang Hendriksen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

An adaptation of the Schwickerath crack initiation test (ISO 9693) was used to determine the bonding strength between an anode support and three different cathodes with a solid oxide fuel cell interconnect. Interfacial elemental characterization of the interfaces was carried out by SEM/EDS analysis on fracture surfaces to investigate the bonding mechanisms. SEM/EDS of fresh fractures were also performed to determine the cohesion/adhesion mechanism of bonding. Calculations of the residual stresses were determined by finite element simulation using ANSYS, based on thermo-mechanical properties of the materials obtained by measurement, calculation or literature.
Original languageEnglish
JournalJournal of the European Ceramic Society
Volume37
Issue number11
Pages (from-to)3565-3578
ISSN0955-2219
DOIs
Publication statusPublished - 2017

Keywords

  • Schwickerath crack-initiation test
  • Three-point bending test
  • SOFC interfaces
  • Metal-ceramic bond strength

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