P. Nikolopoulos et al., A METHOD FOR THE CALCULATION OF INTERFACIAL ENERGIES IN AL2O3 AND ZRO2 LIQUID-METAL AND LIQUID-ALLOY SYSTEMS, Journal of Materials Science, 29(16), 1994, pp. 4393-4398
A method is proposed by which the interfacial energy, gamma(SL), of po
lycrystalline solid oxides (Al2O3, ZrO2) in contact with liquid metals
and certain binary liquid alloys can be calculated from the values of
the surface energy of the oxides, gamma(SV), and the liquid metals or
liquid alloys, gamma(LV), respectively. According to this method, the
interfacial energy depends on the geometric mean of surface interacti
ons, (gamma(SV) gamma(LV))1/2, the molar volumes, V, of the solid and
liquid phases, and a parameter, K, which depends on the geometric deta
ils of the oxide surface defined by the ion sites in the oxide as well
as the stoichiometry of the elements in the oxide and is given by the
equation, gamma(SL) = (K(V(metal)/V(oxide) + 1)2/3 (gamma(SV) gamma(L
V))1/2 The method was verified using interfacial energy data obtained
by measurements of the contact angle, 0, formed between the oxides and
the liquid metals and liquid alloys with the sessile drop technique.
A good agreement was observed between the calculated and the experimen
tally estimated values of gamma(SL) at the melting point of the metals
and alloys.