Abstract
The interfacial energy of solid bismuth (Bi) in equilibrium with Bi−In eutectic liquid was determined for the equilibrating temperature of 109.5 °C. A radial temperature gradient on the sample was established by heating it from the center with a single heating wire and cooling the outside of the sample at −10 °C with a heating/refrigerating circulating bath containing an aqueous ethylene glycol solution. The equilibrated grain boundary groove shapes of solid Bi in equilibrium with Bi In eutectic liquid (Bi- 47.3 at. %In) were observed from a sample quenched at 109.5 °C. The Gibbs-Thomson coefficient and the solid-liquid interfacial energy of the solid Bi in equilibrium with Bi In eutectic liquid were determined to be (8.4±0.4) × 10−8 K m and (54.0±5.4)×10−3 J m−2 from the observed grain boundary groove shapes. The grain boundary energy of the solid Bi phase was calculated to be (105.5±11.6)×10−3 J m−2 by considering a force balance at the grain boundary grooves. The thermal conductivities of Bi-47.3 at. %In eutectic liquid phase and the solid Bi-47.3 at. %In phase and their ratio at 109.5 °C were measured with a radial heat flow apparatus and a Bridgman type growth apparatus.
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Ocak, Y., Akbulut, S., Maraşli, N. et al. Interfacial energy of solid bismuth in equilibrium with Bi−In eutectic liquid at 109.5 °C equilibrating temperature. Met. Mater. Int. 14, 177–187 (2008). https://doi.org/10.3365/met.mat.2008.04.177
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DOI: https://doi.org/10.3365/met.mat.2008.04.177