純金属の表面張力について

抄録

We are trying to clear the fundamental mechanisms on cermet making from the view point of surface and interfacial tension. In this paper, we firstly describe the measurement of surface tension of molten metals by the sessile drop method, and then deduce a semi-theoretical equation as follows: U_s=B_M(L_V−RT⁄2)N^\frac−13V^−\frac23 or γ=K_ML_VN^−\frac13V^−\frac23, where U_s is the surface energy, γ the surface tension, L_v the molar heat of vaporization, N the Loschmidt’s number, V the molar volume,and B_M or K_M is a constant for molten metals. From our results, K_M\doteqdot0.16 and B_M=0.18. In general, similar equations are obtained for Van der Waals’ and ionic liquid by applying results reported by other authors. But in these cases, the constant for Van der Waals’ liquid is B_V\doteqdot0.5 and for ionic liquid, B_I\doteqdot0.10, K_I\doteqdot0.07.