Control of rain growth using intergranular silicate phases in cubic yttria stabilized zirconia

摘要

Grain growth kinetics for 8 mol/100 yttria stabilized cubic zirconia (8Y-CSZ) were investigated. Optimal process parameters required to achieve a small grain size and full density for cubic 8Y-CSZ Included a rapid heating rate(100 deg.c/min) and hot isostatic pressing. Grain growth rates could also be con- Trolled by the deliberate addition of 1 wt/100 of intergranular phases of borosillicate, barium silicate, and Lithium aluminum silicate glasses. Lithium aluminum silicate, the intergranular phase with the highest solu- Bility for yttria and zirconia, enhanced grain growth compared to control samples without grain boundary Phases.