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Planar solid oxide fuel cells (SOFCs) are composites consisting of porous and dense functional layers as electrodes and electrolyte, respectively. Due to the thermo-elastic mismatch between the individual layers residual stresses develop during manufacturing that result in warping for unconstrained cells. The residual stress of half-cells specimens with oxidized anode has been determined as a function...
The in-plane residual stress distribution in the electrolyte of an anode-supported planar solid oxide fuel cell has been determined using X-ray powder diffraction. Measurements have been carried out with half cells in green state, after co-firing and after anode reduction. The residual stress in the electrolyte is compressive. Values of about −560MPa are determined at room temperature for an approximately...
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