Improvement of mechanical properties of Y-TZP via ceria addition and cold isostatic pressing method

Fabrication and composition of tetragonal zirconia have been extensively studied to enhance its mechanical properties. the present study aims to investigate the mechanical properties of yttrium-stabilized zirconia (y-tzp) with ceria addition consolidated via cold isostatic pressing (cip). 3y-tzp was prepared by slip casting. another batch of samples was fabricated via slip casting with the addition of 5 wt% of ceria,followed by cip. all samples were sintered at 1600 °c. results showed that the density and hardness of y-tzp increased with the addition of ceria and use of cip. the density increased from 91.8% to 98% of theoretical density,and the hardness increased from 10.33 gpa to 14.14 gpa. field-emission scanning electron microscopy (fesem) images showed that y-tzp with ceria and consolidated via cip had more homogenous grain structure with lower porosity. the x-ray diffraction (xrd) analysis showed that the phase was 100% tetragonal for both materials. ceria addition consolidated via cip are an effective method to improve the mechanical properties of y-tzp. © 2015 penerbit utm press. all rights reserved.