Translucent Y3Al5O12 ceramics: Mechanical properties
Abstract The elastic, hardness and fracture behaviour of fully dense Y3Al5O12 ceramics doped with various amounts of either SiO2 or MgO was studied. Al-rich inclusions, isolated large grains and coarse grained microstructures were found to be regularly present. These features have a significant influence on the mechanical properties. For ‘normal’, small grained microstructures typically a value of 290 GPa for Young's modulus, 18 GPa for the hardness (2 N load) and 1.7 MPa.m 1 2 for the fracture toughness is obtained.