Solid–liquid interfacial energy of solid aminomethylpropanediol solution in equilibrium with aminomethylpropanediol–neopentylglycol–D camphor liquid

Abstract

The grain boundary groove shapes for equilibrated solid aminomethylpropanediol solution, BCC (AMPD–42.8mol% NPG–3mol% DC) in equilibrium with the liquid (AMPD–7mol% NPG-3mol% DC) have been directly observed by using a horizontal linear temperature gradient apparatus. From the observed grain boundary groove shapes, the Gibbs–Thomson coefficient (Г), solid–liquid interfacial energy (σSL) of solid AMPD solution have been determined to be (5.20±0.52)×10−8Km and (8.89±1.33)×10−3Jm−2, respectively. The grain boundary energy of solid AMPD solution has been determined to be (17.12±2.73)×10−3Jm−2 from the observed grain boundary groove shapes. The ratio of thermal conductivity of equilibrated liquid to thermal conductivity of solid AMPD solution has also been determined to be 0.35.