Analysis of porous structures of crystalline particles with anisotropic surface energy by the sintering simulation

초록

A Monte Carlo simulation method for modeling sintering and grain growth of solid grains using a three dimensional lattice was studied to analyze an effect of anisotropic surface energy (γ<inf>SV</inf>) of particles on the development of porous structures in sintered materials. The changes in porosity (f<inf>V</inf>), mean grain diameter (D<inf>S</inf>), fraction of connected pores (f<inf>V,C</inf>) and contiguity of the solid phase (C) were examined in cases with three different γ<inf>SV</inf>sv relations and initial grain diameters (D<inf>S,0</inf>). Introducing anisotropic γ<inf>SV</inf> brought an increase in f<inf>V</inf> and f<inf>S,V</inf> and an decrease in D<inf>S</inf> and C, and this tendency became more marked for fine D <inf>S,0</inf>. By this simulation study, the use of the particle with anisotropic γ<inf>SV</inf> was considered to have an advantage to obtain fine and stable porous structures in sintered materials.

키워드