The fatigue behavior of several commercially-available MgO partially stabilized zirconias (Mg-PSZ) was studied by measuring the strength as a function of time, temperature, and applied stress level. The two Mg-PSZ types included TS PSZ (thermal shock grade) and MS PSZ (maximum strength grade/1983 vintage). The strength was determined using an interrupted fatigue (I.F.) test in which flexure samples were exposed at temperatures between 500 and 1000 C for times up ...
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