Effect of Zirconia Addition on Some Physical and Mechanical Properties of Porcelain

This research includes the study of the effect of zirconia (ZrO2) additionin a different weight percentages (5,10,15,20)% to porcelain samples formedfrom (Duekhla Kaolin, Ardima Sand, Feldspar Potash and CalciumCarbonate).We studied effect of zirconia addition on some physical 2-Layered Wooden Plaque propertiesas (Linear shrinkage, bulk density, apparent porosity and water absorption)and mechanical properties as (Vickers hardness and indirect tensile strength).The results shown that the zirconia addition in a percentage not increase(10%) have Shorts been enhanced the physical and mechanical properties ofporcelain samples especially in indirect tensile strength.