Thermal shock resistance and fatigue of Zircon-Mullite composite materials

A typical solid brittle material behaviour was found; a simple mathematical expression facilitated the TFR analysis. Although the microstructural configurations studied differed, the experimental behaviour of this group of materials was almost equal. This fact was satisfactorily predicted by the theoretical parameters (R and R‴) showing the importance and potential of the evaluation mechanical evaluation of the ceramic material that define these two parameters. On the other hand the slight difference evaluated in the TFR was correlated with the only parameter that takes into account the fracture toughness (RST) showing that the significance of this property in a more deep characterization of the ceramic materials.