The mathematical viscosity models for metallic melts were discussed. The experimental data of Ag-Au-Cu systems were used to verify the models based on Chou′s general geometric thermodynamic model and the calculated results are consistent with the reported experimental data. A new model predicting the viscosity of multi-component silicate melts was established. The CaO-MnO-SiO 2,CaO-FeO-SiO 2 and FeO-MnO-SiO 2 silicate slag systems were used to verify the model.
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