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用卧滴法测定了纯度均为99.999%的Cu,Sn及其合金的表面张力,Cu和Sn表面张力的温度系数分别为-0.38和-0.071×10~(-3)N·m~(-1)·K~(-1)。在实验温度范围内,Cu-37%Sn合金的表面张力随温度升高而增加。这种异常现象,可能是由于液态合金中存在与γ相有联系的原子团。
The surface tension of Cu, Sn and their alloys with the purity of 99.999% were determined by the method of lying - on - drop method. The temperature coefficients of surface tension of Cu and Sn were -0.38 and -0.071 × 10 -3 N · m ~ 1) · K ~ (-1). In the experimental temperature range, the surface tension of Cu-37% Sn alloy increases with increasing temperature. This anomaly may be due to the existence of a liquid alloy associated with the γ phase atomic group.