Development and optimization of porosity measurement techniques

Different porosity measurement methods are investigated and compared to ascertain a relatively accurate and efficient method suitable for laboratory utilization. As model material Sr0.895Y0.07TiO3−δ (SYT) ceramic material, which is designed as anode substrate for planar solid oxide fuel cells, is studied. Seven batches with different porosity are investigated using image analysis method and Archimedean porosimetry, operating under different conditions, and compare with the results from mercury porosimetry. The experimental results reveal for these methods different accuracies of the true porosity for different porosity ranges.