Abstract:
The ZrO
2-Cu-Al
2O
3 composites with ZrO
2 addition varied from 0 wt% to 15 wt% were prepared by microwave sintering at 1 550℃, the microstructure and mechanical properties of the ZrO
2-Cu-Al
2O
3 composites were analyzed. The results showed that when the addition of ZrO
2 reached 10 wt%, the relative density, HV hardness, room flexural strength and fracture toughness reached 99%、16.5 GPa、482.5 MPa、7.3 MPa·m
1/2, respectively. However, excessive ZrO
2 additions (mass fraction>10%) finally degraded the mechanical properties such as HV hardness, room flexural strength and fracture toughness of the composites.