Quantitative Evaluation of Void Distributions within a Plasma‐Sprayed Ceramic

The size–shape distribution of voids, which includes cracks and pores, was determined using quantitative stereological analysis. The analysis was performed on a water‐stabilized plasma‐spray‐formed Al 2 O 3 –13 wt% TiO 2 . The individual voids were assumed to have an oblate spheroidal shape, which could simulate shapes ranging from spherical pores to cracks. The cracks were generally intralamellar or translamellar, and the pores were interlamellar. The information obtained from two‐dimensional plane sections was unfolded to three‐dimensional information using stereological analysis. The quantitative information of voids was acquired in terms of shape and size.