Measurement of solid-liquid interfacial energy in succinonitrile-pyrene eutectic system

BOYUK U., KEŞLİOĞLU K., EROL M., Marasli N.

MATERIALS LETTERS, cilt.59, sa.23, ss.2953-2958, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 59 Sayı: 23
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.matlet.2005.03.071
  • Dergi Adı: MATERIALS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2953-2958
  • Yıldız Teknik Üniversitesi Adresli: Hayır

Özet

The equilibrated grain boundary groove shapes for solid succinonitrile (SCN)-liquid SCN Pyrene (PY) were directly observed. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient for solid SCN in equilibrium with the SCN-PY eutectic liquid has been determined to be (5.21 +/- 0.26) x 10(-8) K m with numerical method. The solid-liquid interface energy for the solid SCN in equilibrium with the SCN-PY eutectic liquid has been obtained to be (9.58 +/- 0.96) x 10(-3) J m(-2) from the Gibbs-Thomson equation. The grain boundary energy of SCN rich phase of the SCN-PY system has been determined to be (18.30 +/- 2.38) x 10(-3) J m(-2) from the observed grain boundary groove shapes. The thermal conductivity ratio of the liquid phase to the solid phase-for SCN-3 mol% PY alloy has also been measured. (C) 2005 Elsevier B.V. All rights reserved.