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Ti/Al2O3 composites with Pr6O11 addition varied from 0vol% to 2.5vol% were prepared by vacuum hot pressing sintering at 1420°C under the pressure of 30MPa for 1.5h. The microstructure and the mechanical properties of the as-sintered Ti/Al2O3 composites were investigated. The results showed that there were some new phases, determined as AlTiO2, Pr2Ti2O7 and PrAlO3, instead of intermetallic compounds...
The composites with CeO2 addition varied from 0vol.% to 5vol.% were sintered at 1420°C under an applied pressure of 30MPa for 60min. The results of mechanical tests showed that CeO2 is useful for improving mechanical properties, but excessive addition (>3vol.%) will deteriorate the composite; The highest values of relative density, Vickers harness, flexural strength and fracture toughness were...
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