Journal of the American Ceramic Society · 1988 · 61 citations · 8 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsMechanical Behavior Of MaterialsFracture MechanicsFracture ToughnessHigh-temperature MaterialsStrengthening MechanismsThermal Properties Of CeramicsThermal Properties Of MaterialsBendingBending StrengthCrack HealingCracksHigh-temperature CeramicsHigh-temperature Mechanical BehaviorHigh-temperature StrengthMechanical Strength
Bending strength and Young's modulus of aluminum titanate ceramics at room temperature to 1300°C were examined. Bending strength increased from 62 MPa at room temperature to 280 MPa at 1100°C. Young's modulus also increased, to 99 GPa at 1100°C. These increments were caused by crack healing. In particular, crack cylinderization occurring at 1000° to 1100°C markedly increased the mechanical strength. The thermal‐hysteresis curves also showed healing of grain‐boundary cracks.
8