Zirconia-based materials subjected to rapid impact tests
PEDZICH Z. 1, WOJTECZKO A. 1, GRABOWY M. 2, CUDZILO S. 3
1 AGH University of Science and Technology , Krakow, Poland; 2 Institute of Power Engineering Ceramic Division CEREL, Warsaw, Boguchwala, Poland; 3 Military University of Technology, Warsaw, Poland
Tetragonal zirconia is well known for its high fracture toughness. Usually, parameter KIc describing fracture susceptibility is determined by standard tests. Presented work consist in investigation of fracture of different zirconia-based materials under fast impact tests. Performed tests were carried on using igniters. Explosion was concentrated in small area of relatively big samples (more than 100 g). Depending on phase composition and microstructure tested materials showed different behaviuor what was visualised by different level of destruction.
Basing on the level of fragmentation and fractographical analyses of fracture surfaces correlation between phase composition, grain size and fracture toughness were described.
Acknowledgement: Project was financed by the National Centre for Research and Development (NCBR), grant „Zirconia-based composites with extremely high fracture toughness and hydrothermal corrosion” no. POIR.04.01.04-00-0061/18