Solid-liquid interface energies in the succinonitrile and succinonitrile-carbon tetrabromide eutectic system

Maraşlı N., Keşlioglu K., Arslan B.

Journal of Crystal Growth, cilt.247, sa.3-4, ss.613-622, 2003 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 247 Sayı: 3-4
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0022-0248(02)02057-2
  • Dergi Adı: Journal of Crystal Growth
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.613-622
  • Anahtar Kelimeler: interfaces, growth from melt, alloys
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

The equilibrated grain boundary groove shapes for the commercial purity succinonitrile (SCN) and succinonitrile-carbon tetrabromide (CTB) eutectic system were directly observed. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficients for the solid SCN-liquid SCN and solid SCN-liquid SCN CTB have been determined to be (5.43±0.27)×10-8Km and (5.56±0.28)×10-8Km, respectively, with numerical method. The solid-liquid interface energies for the solid SCN-liquid SCN and solid SCN-liquid SCN CTB have been obtained to be (7.86±0.79)×10-3Jm-2 and (8.80±0.88)×10-3Jm-2, respectively from the Gibbs-Thomson equation. The grain boundary energies in the SCN and SCN rich phase of the SCN-CTB system have been calculated to be (15.03±1.95)×10-3Jm-2 and (16.51±2.15)×10-3Jm-2, respectively, from the observed grain boundary groove shapes. The thermal conductivity ratios of the liquid phase to the solid phase for SCN and SCN-4mol% CTB alloy have also been measured. © 2002 Elsevier Science B.V. All rights reserved.