1993 年 57 巻 2 号 p. 164-169
The interfacial tension between a liquid Cu-Bi or Cu-Pb alloy and solid Cu was measured by using multiphase equilibria. The results are summarized as follows:
(1) The surface tension of solid Cu coexisting with the liquid Cu-Bi or Cu-Pb alloy is significantly lower than that of pure solid Cu, becase Bi or Pb vapor atoms are adsorbed on the surface.
(2) The measured interfacial tension, γSL, between the liquid Cu-Bi or Cu-Pb alloy and solid Cu is in fairly good agreement with that calculted by the Good and Girifalco’s equation (γSL=γSV+γLV−2ΦG(γSVγLV)1⁄2), in which the parameter, ΦG, is assumed to be 0.947.