Journal article

Transient deformational properties of high temperature alloys used in solid oxide fuel cell stacks

Tesfaye Tadesse Molla, Kawai Kwok, Henrik Lund Frandsen

JOURNAL OF POWER SOURCES | ELSEVIER SCIENCE BV | Published : 2017

Abstract

Stresses and probability of failure during operation of solid oxide fuel cells (SOFCs) is affected by the deformational properties of the different components of the SOFC stack. Though the overall stress relaxes with time during steady state operation, large stresses would normally appear through transients in operation including temporary shut downs. These stresses are highly affected by the transient creep behavior of metallic components in the SOFC stack. This study investigates whether a variation of the so-called Chaboche's unified power law together with isotropic hardening can represent the transient behavior of Crofer 22 APU, a typical iron-chromium alloy used in SOFC stacks. The mat..

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University of Melbourne Researchers

Grants

Awarded by European Union's Seventh Framework Programme (FP7) for the Fuel Cells and Hydrogen Joint Technology Initiative


Awarded by Energinet.dk under the Public Service Obligation, ForskEL


Funding Acknowledgements

The research leading to these results has received funding from the European Union's Seventh Framework Programme (FP7/2007-2013) for the Fuel Cells and Hydrogen Joint Technology Initiative under grant agreement no 325278 and from Energinet.dk under the Public Service Obligation, ForskEL contract 2014-1-12236.