A Monte Carlo simulation method using a three dimensional lattice was developed to analyze the connectivity of pores in sintered materials. The changes in porosity (fV), mean grain diameter (DS), intercept length of pores (DV), contiguity of the solid phase (C) and fraction of connected pores (fV,C) with the number of Monte Carlo steps (MCS) were analyzed as a function of initial porosity (fV,0) and initial grain diameter (DS,0). In many cases, fV,C decreased with MCS down to 0%, particularly at small and intermediate values of fV,0 and DS,0. However, in some cases of large fV,0 and DS,0, and fV,0 and DS,0, an fV,C of 100% was maintained irrespective of MCS, which means that all pores may remain connected in the material. Systematic plots of DV, DS and C vs fV,0 × fV,C, which indicate the amount (%) of connected pores, are found to be useful for designing sintering and grain growth processes of porous materials.
ASJC Scopus subject areas
- 化学 (全般)