Solid-liquid interfacial energy of solid succinonitrile solution in equilibrium with succinonitrile-neopentylglycol eutectic liquid

Karadaǧ S. B., Altintas Y., Öztürk E., Aksöz S., Keşlioǧlu K., Maraşlı N.

Journal of Crystal Growth, vol.380, pp.209-217, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 380
  • Publication Date: 2013
  • Doi Number: 10.1016/j.jcrysgro.2013.06.011
  • Journal Name: Journal of Crystal Growth
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.209-217
  • Keywords: Interfaces, Phase equilibria, Surface properties, Organic compounds
  • Istanbul Gelisim University Affiliated: No

Abstract

The grain boundary groove shapes for solid succinonitrile solution (SCN-5 mole% NPG) in equilibrium with the succinonitrile (SCN)-neopentylglycol (NPG) eutectic liquid (SCN-9.55 mole% NPG) have been directly observed by using a horizontal linear temperature gradient apparatus at 317.1 K equilibrium temperature. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient (⌈) and solid-liquid interfacial energy (σSL) of solid SCN solution have been determined to be (5.43±0.50) ×10-8 K m and (8.09±1.21)×10-3 J m -2, respectively. The grain boundary energy of solid SCN solution has been determined to be (14.22±2.28)×10-3 J m -2 from the observed grain boundary groove shapes. The thermal conductivity for SCN-9.55 mole% NPG eutectic solid phase and the thermal conductivity ratio of eutectic liquid phase to eutectic solid phase at the melting temperature have also been measured with a radial heat flow apparatus and Bridgman type growth apparatus, respectively. © 2013 Elsevier B.V.