Measuring Solid Liquid Interfacial Energy by Grain Boundary Groove Profile Method (GBG)

Abstract

The solid liquid interfacial energy plays important role in the liquid solid transformation, thus it is very important to have quantitative values of the interfacial energy as this will help gain more knowledge into the structural nature of the interface. It will assist in gaining fundamental knowledge into the physics of interfaces and also in improving the technology in the crystal growth and foundry. Gündüz designed a radial heat flow apparatus in applied temperature gradient to produce grain boundary groove profile in 1984[2]. Based on the design by Gündüz, a novel radial heat flow apparatus is designed. To obtain the solid liquid interfacial energy, Gibbs Thomson coefficient value is required. To obtain accurate values of Gibbs Thomson coefficient, the interface groove profile, temperature gradient in solid and thermal conductivity values for the solid and liquid must be known.