Analysis of Porous Structures of Crystalline Particles with Anisotropic Surface Energy by the Sintering Simulation

Abstract

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_SV) of particles on the development of porous structures in sintered materials. The changes in porosity (f_V), mean grain diameter (D_S), fraction of connected pores (f_V,C) and contiguity of the solid phase (C) were examined in cases with three different γ_SV relations and initial grain diameters (D_S,0). Introducing anisotropic γ_SV brought an increase in f_V and f_V,C and an decrease in D_S and C, and this tendency became more marked for fine D_S,0. By this simulation study, the use of the particle with anisotropic γ_SV was considered to have an advantage to obtain fine and stable porous structures in sintered materials.