Density, surface tension and viscosity of liquid ZnAl + X (X = Li, Na, Si) alloys

• Obtained new data base of physicochemical properties of ZnAl with Li, Na, Si alloys.
• The increasing viscosity data for ZnAl with Li, Na and Si additions.
• Correlation short-range ordering in liquid for density, surface tension, viscosity.
• Appointed the isothermal of physicochemical properties from Li, Na and Si content.

In this study, data for liquid ZnAl alloys with Li, Na and Si addition are presented. The thermophysical properties, viscosity, density and surface tension were measured using the discharge crucible method (DC). The experiments were conducted for Zn5.3Al alloys with 0.1, 0.2, 0.5, 1.0 and 3.0 wt% Na; 0.05, 0.1, 0.2, 0.5 and 1.0 wt% Li; and 0.5, 1.0, 3.0 and 5.0 wt% Si. The measurements were performed over a temperature range of 773–1023 K. The results show that the additions of Li and Na to eutectic ZnAl causes density and surface tension to decrease, and viscosity to increase. Addition of Si caused density, surface tension and viscosity to increase, in comparison to eutectic ZnAl alloy. The performed isotherms of density, surface tension and viscosity at 973 K show the influence of additions of Na, Li and Si to eutectic ZnAl.

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