Interfacial energies of carbon tetrabromide

Böyük U., MARAŞLI N.

Current Applied Physics, cilt.9, sa.2, ss.359-366, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 9 Sayı: 2
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.cap.2008.03.004
  • Dergi Adı: Current Applied Physics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.359-366
  • Anahtar Kelimeler: Organic materials, Crystal growth, Interfacial energy, Grain boundary energy, Thermal conductivity ratio
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

The equilibrated grain boundary groove shapes for solid carbon tetrabromide (CTB) in equilibrium with its melt were directly observed by using a horizontal temperature gradient stage. From the observed grain boundary groove shapes, Gibbs-Thomson coefficient (Γ) and solid-liquid interfacial energy (σSL) and grain boundary energy (σgb) of CTB have been determined to be (7.88 ± 0.8) × 10-8 K m, (6.91 ± 1.04) × 10-3 J m-2 and (13.43 ± 2.28) × 10-3 J m-2, respectively. The ratio of thermal conductivity of equilibrated liquid phase to solid phase for CTB has also been measured to be 0.90 at its melting temperature. The value of σSL for CTB obtained in present work was compared with the values of σSL determined in the previous works for same material and it was seen that the present result is in good agreement with previous works. © 2008 Elsevier B.V. All rights reserved.