Porous stage assessment of pressure assisted sintering modeling parameters: a ceramic identification method insensitive to final stage grain growth disturbance

Pressure assisted sintering models such as Skorohod-Olevsky's, Abouaf's or Riedel's require the identification of at least four parameters depending on porosity temperature. The these is difficult high temperature and for pressures because non-linear mechanical behavior which makes them closely interconnected. To solve this problem, fully dense identified first allowing determining porous afterward. This typical approach well employed metal viscous materials. However, ceramics final stage grain growth tests irrelevant; equivalent phase sintered specimens has bigger grains (then longer diffusion distances) than in initial/intermediate stages sintering. Consequently, most compensate overestimation by an underestimation values. In paper we propose a unique formulation based sinter-forging die compaction directly identify all from stage. comprehensive determination possible non-reductive hypothesis shear modulus function shape experimental radial/vertical displacement tests. Such allows instantaneous insensitive actual size ceramic.