Some theoretical considerations of the surface tension of liquid metals for metal matrix composites
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- Schoutens, J.E. J Mater Sci (1989) 24: 2681. doi:10.1007/BF02385611
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This paper presents a model for calculating the surface tension of pure metals and their alloys. It is based upon the theory of Eyringet al. which uses classical statistical physics to describe the thermodynamic properties of metals in the liquid state. Calculations show the surface tension of pure aluminium to be nearly 9% greater than that measured for pure aluminium having a monolayer of oxide (Al2O3), and within about 10% of measured values for Al-xMg and Al−xCu, wherex is the weight percent of the alloying element. In the present calculations 0 ≤x≤8 wt% for magnesium and 0≤x≤30 wt% for copper were used. The values calculated are also in good agreement with results from other models. The model was also used to calculate the temperature coefficient. For pure aluminium the calculated values fall within experimental measurements, and exhibit a slight temperature dependence.