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 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 been enhanced the physical and mechanical properties ofporcelain samples especially in indirect tensile strength.