The physicomechanical properties of a ceramics composed of ZrO2+3 mol.% Y2O3 and fabricated by cold isostatic pressing (CIP) at up to 0.8 GPa with sintering at 1440–1620°C are described. It is shown that the material with a low content of admixtures sinters only at 1620°C at a pressure of 0.6–0.8 GPa and possesses a density of 6.0 g/cm3, an ultimate bending strength of 900 MPa, and a fracture toughness of 8 MPa·m1/2. For the material with a high content of admixtures sintered at 1550°C and pressed at a pressure of 0.6 GPa the same parameters are 5.95 g/cm3, 700 MPa, and 12 MPa·m1/2. It is established that CIP promotes sintering of Y-PSZ ceramics. CIP has the best effect on the mechanical properties of high-purity materials.
Refractories and Industrial Ceramics – Springer Journals
Published: Nov 27, 2007
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