β因子校正法测定Pb-Cu、Bi-Cu合金表面张力

Surface Tension Measurement of Pb-Cu and Bi-Cu Liquid Binary Alloy with the Factor Adjustmenet Method

采用座滴法技术,通过“软件化”的自编 B-A 表和相应的β因子校正法程序,测定了 Pb-Cu,Bi-Cu 合金的表面张力。测定结果表明:Pb-7%wtCu 的元合金在850℃、900℃;Bi-26%Cu 二元合金在850℃的表面张力值分别为408×10^(-3)N·m^(-1)、427×10^(-3)N·m^(-1)以及343×10^(-3)N·m^(-1)。分析和讨论了测量与计算过程中的影响因素。

The surface tensions of Pb-7Wt%Cu and Bi-26Wt%Cu liquid binary al- loys were measured by the sessile drop technique,with the self-eomposing. programs of both Bashforth-Adams tables and β factor adjustment method. The results show that the surface tensions are 407 10 N/m,427 10N/m for Pb-Cu alloy at 850℃,900℃ and 343 10N/m for Bi-Cu alloy 850℃ respecti- vely.The analysis and discussion have been given to the influence of process of measurement and method of calculation on the results.