1 results listed
This study aims to determine the optimum parameters for production of zirconia block from dental zirconia
waste powders. For this purpose, zirconia blocks obtained by uniaxial pressing of waste powders under
different pressures (200, 300, 400, 550 and 600 MPa) were pre-sintered at different temperatures (950, 1050,
1150 and 1250 °C) for 2 h. Pre-sintered zirconia blocks were characterized density and hardness tests. The
phase structure and chemical composition of zirconia blocks were determined by SEM-EDX and XRD
analysis. The density and hardness of zirconia blocks increased depending on increasing pressing pressure
and pre-sintering temperature. Also, it has been found that high pressing pressures cause cracks in the blocks.
International Iron & Steel Symposium
UDCS
Handan Turan Matİk
Mustafa Boz
Ulaş MATİK