Equilibrated grain-boundary grooves of solid ε-phase (CuZn5) in contact with Zn-1.75at%Cu peritectic liquid and solid CuZn5 in contact with solid Zn-2.83at%Cu were observed in quenched samples. The Gibbs-Thomson coefficient, solid/liquid interfacial energy and grain-boundary energy of solid CuZn5 in equilibrium with Zn-1.75at%Cu peritectic liquid were deduced to be 4.9 x 10-8Km, 76.0mJ/m2 and 150.3mJ/m2, respectively. The Gibbs-Thomson coefficient, solid/solid interfacial energy and grain-boundary energy of solid CuZn5 in equilibrium with solid Zn were deduced to be 4.7 x 10-8Km, 72.9mJ/m2 and 144.1mJ/m2, respectively, from the observed grain-boundary groove shapes.

Experimental Determination of Solid-Solid and Solid-Liquid Interfacial Energies of Solid ε (CuZn5) in the Zn-Cu Alloy. Y.Kaygisiz, S.Akbulut, Y.Ocak, K.Keşlioǧlu, N.Maraşli, E.Çadirli, H.Kaya: Journal of Alloys and Compounds, 2009, 487[1-2], 103-8