Abstract
The fracture behavior of partially stabilized zirconia (PSZ) and silicon-nitride ceramics (Si3N4) is investigated under dynamic loading at elevated temperatures up to 1200°C using the caustic method combined with an ultra high-speed camera. The values of the dynamic fracture toughnessK Id and the crack-propagation fracture toughnessK ID are obtained, and it is shown that a dynamic effect on these values is observed in PSZ but not in Si3N4. The dynamic crack arrest toughnessK Ia is found to exist for PSZ.
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