The brittleness behaviour of the pressed and sintered Yttria Zirconia-Mullite-Magnesia
system has been studied. Specifically, the brittleness index represents a correlation of
material properties for predicting mechanical properties such as for the characterization of
machinability, wear or erosion resistance. The brittleness index as well as fracture
toughness were obtained from indentation testing of the Vickers hardness. In this study, the
fracture toughness considered the crack extension mechanism to accommodate Palmqvist …