| Title |
Effect of Pressure on Crystal Nucleation in Pure Metallic Melts |
| Abstract |
The pressure dependence of the nucleation temperature for the pure metals, (e.g. Bi and Sn) was considered in terms of the classical nucleation theory and the structural model for a liquid-solid interfacial energy. With a suitable selection of kinetic parameter values, the calculated trend of nucleation temperature on pressure can be shown to reproduce the experimental observations. Form the results of the comparison, the pressure dependence on the liquid-solid interfacial energy, which has been usually ignored, was discussed. However, for a complete understanding of the uncleation kinetices, the structural model may require modification to interpret the liquid-solid interfacial energy. Also, other uncertainties such as a pressuer dependence of the catalytic potency factor, f(θ), should be studied further. |