  The modeling of powder compaction process, such as spark plasma sintering
(SPS), requires the determination of the visco-plastic deformation behavior of
the particle material including the viscosity moduli. The establishment of
these parameters usually entails a long and difficult experimental campaign
which in particular involves several hot isostatic pressing tests. A more
straightforward method based on the coupled sinter-forging and die compaction
tests, which can be easily carried out in a regular SPS device, is presented.
Compared to classical creep mechanism studies, this comprehensive experimental
approach can reveal the in situ porous structure morphology influence on the
sintering process.
