Abstract
In capsule free sinter-HIPping of Al2O3, the effects of timing of pressurizing in various HIP parameters on properties of sintered products were especially investigated.
The experiments were conducted with various temperatures in pressureless presintering and the timings of pressurizing in HIP process. For the samples sintered by the capsule free HIP method, density, bending strength and fracture toughness were measured, and it was confirmed that the timing of pressurizing in HIP process was an important facter in order to attain the high density of Al2O3.
