High-strength magnesia partially stabilized zirconia containing a grain growth inhibitor

摘要

A Mg-PSZ ceramic body formed from a ceramic powder composition consisting of 2.8-5.0% by weight MgO, an effective amount of grain growth inhibiting additive, and the balance being zirconia. The crystalline microstructure of the ceramic body comprises grains of cubic zirconia having an average grain size of less than about 30 microns in major dimension and 0.1-8.7% by volume of discrete particles of the grain growth inhibiting material which is or is formed from the additive