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Citation: ZHOU Sheng-Gang, YANG Xiu-Qin, XU Jian, . Thermal Theoretical Calculation of the Liquid-Solid Interfacial Free Energy in Pb-Al Binary System[J]. Acta Physico-Chimica Sinica, ;2009, 25(11): 2177-2180. doi: 10.3866/PKU.WHXB20091114 shu

Thermal Theoretical Calculation of the Liquid-Solid Interfacial Free Energy in Pb-Al Binary System

1.
Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China

Corresponding author: , ,
Received Date: 10 April 2009
Available Online: 22 September 2009

Based on the Warren's interface theory of liquid-solid interfacial energy for complicated compatible binary and pseudo binary systems, a physical model for the liquid-solid free interfacial energy that has been simplified at the theoretical level was obtained by taking the Pb-Al liquid-solid binary system as an example. A theoretical formula with two variables was then obtained by deducing a thermodynamic equation, and the calculational values and the experimental values by multiphase equilibrium method (MPE) were compared. Finally, research on a Pb-Al binary liquid-solid system showed that the calculated liquid-solid interfacial free energy (γSL) values from the model provided a result similar to the experimental measurement with a low average error. The calculated values only depend on the temperature and the Al concentration. A foundation to calculate γSL for other systems has therefore been established.
- Immiscible,
- Pb-Al binary system,
- Warren’s interface theory,
- Multiphase equilibriummethod,
- Liquid-solid interfacial free energy
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