High Temperature Strength of Mo/PSZ Composites as Evaluated by MSP Test (II)

In present work, the mechanical properties of Mo/PSZ (partially stabilized zirconia) composites were investigated at a temperature range from room temperature to 1573K by means of the modified small punch test (MSP) and the dependence of MSP strength for Mo/PSZ composites on composition and microstructure was discussed in detail. It was found that the change of MSP strength with the composition at various test temperatures was different: it took the shape of W at room temperature; at temperatures up to 873K and 1273K, the MSP strength approached its peak, respectively at the compositions where the Mo phase was dispersed or both compositional phases were continuous. The results show that MSP strength depends not only on the composition but also on the composite microstructure.