The Effect of MgO Stabilizer on the Phase Composition and Microstructure of Zirconia Metering Nozzle Matrix

The phase composition and microstructure of ZrO 2 metering nozzle matrix doped with different content stabilizer were researched by XRD, SEM and EDS. Result showed that the content of cubic phase increased accompanied with monoclinic phase decreased after sintering, different content of stabilizer made phase transition not the same; After sintering in the solid solution formed by MgO and ZrO 2 , with closer location to the MgO particles, substitution degree was more obvious, but the diffusion and solid solution state of the stabilizer were far from uniform.