3. Solid phase sintering modeling
The first sintering stage, during which bridges are formed between grains, is modeled by the welding of two spherical grains of the same size; subsequent stages are described by the disappearance of pores assumed to be cylindrical (open porosity) then spherical (closed porosity) in a stack formed by grains represented by truncated cuboctahedrons.
3.1 Bridge construction
The appearance of the first contacts between the grains may be due to electrostatic-type forces or to chemical bonds between the surface species (elimination of water with bridging between the grains, for example). The torus thus formed has two radii of curvature: the first x is positive, the second α is negative. We will first consider the kinetics of bridge growth, followed by the corresponding...
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Solid phase sintering modeling
Microstructure evolution during sintering
