Mehta U, Yadav S K, Koirala I, Koirala R P, Shrestha G K, Adhikari D
Central Department of Physics, T.U. Kathmandu, Nepal.
Department of Physics, Mahendra Morang A. M. Campus, T.U. Biratnagar, Nepal.
Heliyon. 2020 Aug 10;6(8):e04674. doi: 10.1016/j.heliyon.2020.e04674. eCollection 2020 Aug.
The surface tension and viscosity of Cu-Fe-Si ternary alloys were computed at different temperatures using thermodynamic approaches. The thermodynamic data of the alloy were optimized in the framework of the Redlich-Kister (R-K) polynomials and exponential temperature dependent coefficients of the R-K polynomial were obtained. These coefficients were used to compute the excess Gibbs free energy of mixing of the alloy and the partial excess free energy of the components. The partial excess free energy so obtained was used to compute the surface tension of the ternary Cu-Fe-Si alloy system and its binary sub-systems. The enthalpy of mixing was also optimized and it was used to compute the viscosity of the sub-binary and ternary alloys.
采用热力学方法计算了不同温度下Cu-Fe-Si三元合金的表面张力和粘度。在Redlich-Kister（R-K）多项式框架内对合金的热力学数据进行了优化，并获得了R-K多项式的指数温度相关系数。这些系数用于计算合金混合的过量吉布斯自由能和各组分的偏过量自由能。由此得到的偏过量自由能用于计算三元Cu-Fe-Si合金体系及其二元子体系的表面张力。还对混合焓进行了优化，并用于计算亚二元和三元合金的粘度。
