초록 열기/닫기 버튼
This study measured the Vickers hardness of Al2O3 ceramics, and Weibull statistical analysis was used to evaluate thereliability of the measured data. The specimens were heat-treated for 0.5 hr, 1 hr and 10 hrs at temperatures of 1473 K, 1573K, and 1673 K. The as-received specimen and the heat treated specimen were corroded for 400 hours in acidic and alkalinesolutions. The specimens were as-received specimen, corroded as-received specimen, heat treatment specimen and corrodedheat treatment specimen. The specimens were measured Vickers hardness. The two-parameter Weibull probabilitydistribution can be applied to the Vickers hardness. In the Weibull statistical analysis of the corroded Al2O3 compositeceramics, the shape parameters and scale parameters can be used to determine the dispersion and to predict the strength/hardness.
