The content of partially stabilized zirconia has remarkable influence on densification and mechanical properties of Al2O3/PSZ（3Y） ceramic composites. When 15%PSZ（3Y） is added to Al2O3, after vacuum sintering for 2...The content of partially stabilized zirconia has remarkable influence on densification and mechanical properties of Al2O3/PSZ（3Y） ceramic composites. When 15%PSZ（3Y） is added to Al2O3, after vacuum sintering for 2 h at 1 550 ℃, the fracture toughness and bending strength of the Al2O3/PSZ（3Y） ceramic composite reaches 8.2 MPa·m1/2 and 884 MPa, respectively. The effect of the content of PSZ（3Y） on relative density and mechanical properties was investigated. The change of m-ZrO2 and t-ZrO2 phases content before and after fracture was measured by X-ray diffraction quantitative phase analysis. It is confirmed that improvement in bending strength and fracture toughness of the Al2O3/PSZ（3Y） ceramic composite is due to the phase transformation toughening mechanism of PSZ（3Y）.展开更多
文摘The content of partially stabilized zirconia has remarkable influence on densification and mechanical properties of Al2O3/PSZ（3Y） ceramic composites. When 15%PSZ（3Y） is added to Al2O3, after vacuum sintering for 2 h at 1 550 ℃, the fracture toughness and bending strength of the Al2O3/PSZ（3Y） ceramic composite reaches 8.2 MPa·m1/2 and 884 MPa, respectively. The effect of the content of PSZ（3Y） on relative density and mechanical properties was investigated. The change of m-ZrO2 and t-ZrO2 phases content before and after fracture was measured by X-ray diffraction quantitative phase analysis. It is confirmed that improvement in bending strength and fracture toughness of the Al2O3/PSZ（3Y） ceramic composite is due to the phase transformation toughening mechanism of PSZ（3Y）.
