Solid-liquid interfacial energy of pyrene


AKBULUT S., OCAK Y., BOYUK U., EROL M., KESLIOGLU K., Marasli N.

JOURNAL OF APPLIED PHYSICS, vol.100, no.12, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 100 Issue: 12
  • Publication Date: 2006
  • Doi Number: 10.1063/1.2402098
  • Title of Journal : JOURNAL OF APPLIED PHYSICS

Abstract

The equilibrated grain boundary groove shapes for commercial purity pyrene (PY) were directly observed by using a temperature gradient stage. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient and solid-liquid interfacial energy of PY have been determined to be (8.9 +/- 0.9)x10(-8) K m and (21.9 +/- 3.3)x10(-3) J m(-2) with the present numerical model and Gibbs-Thomson equation, respectively. The grain boundary energy of PY phase has been determined to be (42.8 +/- 7.3)x10(-3) J m(-2) from the observed grain boundary groove shapes. Thermal conductivity ratio of liquid phase to solid phase has also been measured to be 0.89. (c) 2006 American Institute of Physics.