Liquid phase transition of Sn 50Bi 50 hypereutectic alloy and its thermodynamic and kinetic aspects

摘要

AbstractIn this paper, the thermodynamic and kinetic characteristics of liquid phase transition (LPT) were investigated using conductivity method and DSC method. The results showed that the first-order liquid phase transition was completed in Sn50Bi50melt and controlled by temperature and the concentration of the substrate. The nature of transition was the broken of residual SnSn covalent bonds and the release of free electrons. The Kissinger method, Ozawa method and Doyle method are suitable for the investigation of LPT. In addition, a facile strategy was established for investigating the thermodynamic and kinetic characteristics of the LPT.Highlights?First-order liquid phase transition occurred in Sn50Bi50melt.?DSC method and conductivity method were applicable to the investigation of transition thermodynamics and kinetics.?A strategy was established for the investigation of the liquid phase transition.