The Preparation and Properties Study of the Zirconia Dispersion-Strengthened Platinum Materials

s: The zirconia dispersion-strengthened platinum thermocouple materials were successfully fabricated by powder metallurgic method. It was studied the zirconia grains influences on platinum materials. The results of the study show that its density is 21.4g/cm 3 and its relative density is 99.8%. Its tensile strength obvious overtop pure platinum, the maximum tensile strength is 930MPa. The cures of tensile strength with the processing rate improved of the materials obey a analogy-linear law. The resistance ratio (R100/R0)1.3922, and thermal electromotive force of Pt matched PtRh10 meet I measuring accuracy grade relative to GB/T1598-2010 stander.