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Journal article

Fracture properties of nickel-based anodes for solid oxide fuel cells

By Goutianos, Stergios1,2,3; Frandsen, Henrik Lund3,4,5; Sørensen, Bent F.1,2,3

From

Composites and Materials Mechanics, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1

Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2

Risø National Laboratory for Sustainable Energy, Technical University of Denmark3

Electroceramics, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4

Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark5

Reliable assessment of structural integrity of fuel cells requires the knowledge of the mechanical properties of their individual components, in particular the fracture toughness. A technique is presented to measure the critical energy-release rate/fracture toughness of thin ceramic layers such as the anode material (NiO–YSZ) in a fuel cell.

The approach involves a new specimen geometry which consists of a thin ceramic glued onto thick steel beams to form a double cantilever beam (DCB) specimen. The fracture toughness values, measured from truly sharp cracks, are obtained over a range of applied energy-release rates: from crack growth initiation to fast fracture.

Language: English
Year: 2010
Pages: 3173-3179
ISSN: 1873619x and 09552219
Types: Journal article
DOI: 10.1016/j.jeurceramsoc.2010.07.028
ORCIDs: Frandsen, Henrik Lund and Sørensen, Bent F.
Keywords

Lette stærke materialer til energiformål Light strong materials for energy purposes Materialer og energilagring Materials and energy storage

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