Improvement of the Contact Strength of Al2O3SiC by a Combination of Shot Peening and Crack-Healing

الملخص EN

Al2O3/SiC composite ceramics with high crack-healing ability were subjected to shot peening (SP) using zirconium oxide shots with several peening pressures and shot diameters.

Specimens subjected to SP were heat-treated in air to heal the surface cracks induced by SP.

The residual stress, the apparent fracture toughness, and the Weibull distribution of the contact strength were investigated, revealing that the combination of SP and crack-healing is effective for increasing the contact strength and decreasing the scatter of the contact strength of Al2O3/SiC.