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        Experimental Determination of Interfacial Energies for Solid Sn in Equilibrium with Sn-Mg-Zn Liquid

        Yemliha Altıntas,Esra Öztürk,Sezen Aksöz,Kâzım Keşlioğlu,Necmettin Maraşlı 대한금속·재료학회 2015 METALS AND MATERIALS International Vol.21 No.2

        The equilibrated grain boundary groove shapes of solid Sn in equilibrium with Sn-Mg-Zn liquid were observedfrom a quenched sample by using a radial heat flow apparatus. The Gibbs-Thomson coefficient, solid-liquidinterfacial energy and grain boundary energy of solid Sn were determined from the observed grain boundarygroove shapes. The thermal conductivity of the eutectic solid phase for Sn-8.12 at% Mg-4.97 at% Zn alloy and thethermal conductivity ratio of the liquid phase to the solid phase for Sn-8.12 at% Mg-4.97 at% Zn alloy at eutectictemperature were also measured with a radial heat flow apparatus and a Bridgman-type growth apparatus,respectively. The Gibbs-Thomson coefficient, solid-liquid interfacial energy and grain boundary energy of solidSn in equilibrium with Sn-Mg-Zn liquid were determined to be (8.3 ± 0.6)×10-8 Km, (118.5 ± 14.2)×10-3 Jm-2and (225.1 ± 29.3)×10-3 J m-2 respectively from observed grain boundary groove shapes. A comparison ofpresent results for solid Sn in the Sn-8.12 at% Mg-4.97 at% Zn alloy with the results obtained in previous worksfor similar solid Sn in equilibrium with different binary or ternary liquid was made.

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