Publication: Mechanical and microstructural evaluation of Y-TZP using microwave sintering technique
Date
2016
Authors
Golieskardi M.
Satgunam M.
Ragurajan D.
Journal Title
Journal ISSN
Volume Title
Publisher
Trans Tech Publications Ltd
Abstract
The effects of adding Al2O3 and CeO2 on the microstructure, mechanical and physical properties of 3 mol% yttria-stabilized zirconia (3Y-TZP) ceramics is presented over a wide sintering regime by pressureless sintering. It has been revealed that small additions of dopant to Y-TZP were beneficial in enhancing the mechanical properties of Y-TZP. Sintered samples were used to evaluate the bulk density, Vickers's hardness, Young's modulus, and shrinkage of the material. Al2O3 and CeO2 doped Y-TZPs sintered at 1450�C retained high bulk density (>97% of theoretical density) and Young's modulus (>200 GPa) without sacrificing tetragonal phase stability. The optimum level of dopant was found to be at 0.3 Al2O3 / 0.5 CeO2 at sintering temperature between 1250�C and 1450�C using the standard 12 min holding time cycle, with sintered body exhibiting excellent combination of properties when compared to the undoped ceramics. � 2016 Trans Tech Publications, Switzerland.
Description
Alumina; Aluminum oxide; Ceramic materials; Cerium oxide; Elastic moduli; Mechanical properties; Microwave heating; Yttria stabilized zirconia; Yttrium oxide; Zirconia; Mechanical and physical properties; Microstructural evaluation; Microwave sintering; Pressure-less sintering; Sintering temperatures; Tetragonal phase; Theoretical density; Yttria-stabilized zirconia (3Y-TZP); Sintering