Thermal conductivity and interfacial energies of solid Sn3Sb2 in the Sn–Sb peritectic system

The equilibrated grain boundary groove shapes of solid Sn3Sb2 in equilibrium with the Sn–Sb peritectic liquid have been observed from quenched sample with a radial heat flow apparatus. The Gibbs–Thomson coefficient, solid–liquid interfacial energy and grain boundary energy of solid Sn3Sb2 have been determined from the observed grain boundary groove shapes. The variation of thermal conductivity with temperature for solid Sn3Sb2 and peritectic solid has been measured up to five degree below the meting temperature with a radial heat flow apparatus. The ratio of thermal conductivity of liquid phase to solid phase for Sn–7.8 at.%Sb alloy at the melting temperature has also been measured with a Bridgman type growth apparatus.

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► Thermal conductivities of different compositions in the Sn–Sb binary alloy have been measured.
► Solid–liquid and grain boundary energies have been determined for solid Sn3Sb2 in the Sn–Sb binary alloy.
► The Gibbs–Thomson coefficient for Sn3Sb2 have been determined.