| 초록 |
Multiple previous literature had reported certain degree of change in final crystal size distribution due to pre-history temperature profile. To investigate such event, behaviors of sub-nuclei particle clusters and resulting metastable zone width have to be thoroughly analyzed. However, population balance equation model, though widely used in both academic and industrial fields, has failed to express creation of sub-nuclei sized particle clusters in a single continuous model. Such drawback would hinder exact estimation of metastable zone width. On the other hand, Kinetic rate equation model describes nucleation through movement of multiple sub-nuclei sized particle clusters, and therefore is more adept for accurate description of metastable zone width. In this study, Kinetic rate equation model from Mazzotti Group is modified to suite the need for non-isothermal condition of cooling crystallization. Final crystal size distribution from the modified model is validated by comparison with results from previous literatures. Also, various pre-history temperature profiles are tried for different results in crystal size distributions. |
