Surface-tension Measurements of the eutectic alloy (Ag-Sn 96.2 at.%) with Cu additions

摘要

The maximum bubble-pressure method has been used to measure the surface tension and density of liquid alloys (Ag-Sn)_(eut)+Cu(X_(Cu=0.005,0.020,0.0375,and 0.065 (mole fraction).The surface tension and density measurement were curried out in the temperature ranges of 262-942degC and 264-937degC,respectively.The liner dependenciesof surface tensions and densities on temperature were observed,and they were described by straight-line equations.It has been found that the additions of Cu to the Ag-Sn eutectic alloy increase the surface tension.Experimental data of the surface tension were compared with those from modeling based on Butler's method,using the optimized-thermodynamic parameters from the literature,and a slight tendency contrary to the experimental results was observed.