Effect of the pressure of cold isostatic pressing and the sintering temperature on the properties of ceramics made of partially stabilized ZrO sub(2)

The physicomechanical properties of a ceramics composed of ZrO sub(2)+3 mol.% Y sub(2)O sub(3) and fabricated by cold isostatic pressing (CIP) at up to 0.8 GPa with sintering at 1440-1620 degree C are described. It is shown that the material with a low content of admixtures sinters only at 1620 degree C at a pressure of 0.6-0.8 GPa and possesses a density of 6.0 g/cm super(3), an ultimate bending strength of 900 MPa, and a fracture toughness of 8 MPa.m super(1/2). For the material with a high content of admixtures sintered at 1550 degree C and pressed at a pressure of 0.6 GPa the same parameters are 5.95 g/cm super(3), 700 MPa, and 12 MPa.m super(1/2). It is established that CIP promotes sintering of Y-PSZ ceramics. CIP has the best effect on the mechanical properties of high-purity materials.