A numerical method is proposed in order to simulate sintering, based on fundamental equations of diffusion theory (Fick equation). The method makes it possible to consider actual geometry of particles from which a powder compact is composed, and it may be used for an assembly of particles of another shape, dimensions and reciprocal position. A boundary element method is used for numerical realization. Results are presented for simulating sintering of Al2O3 particles of different shape and sizes. Dependences are presented for the effect of different material characteristics, in particular dihedral angle (it specifies the relationship of free surface energy and intergranular boundary energy), on sintering kinetics and the value of intergranular boundary achieved.
Refractories and Industrial Ceramics – Springer Journals
Published: Dec 3, 2009
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