Dependency of the dendritic arm spacings and tip radius on the growth rate and composition in the directionally solidified succinonitrile-carbon tetrabromide alloys

Kaya H., Çadirli E., Keşlioǧlu K., Maraşlı N.

Journal of Crystal Growth, cilt.276, sa.3-4, ss.583-593, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 276 Sayı: 3-4
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.jcrysgro.2004.11.392
  • Dergi Adı: Journal of Crystal Growth
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.583-593
  • Anahtar Kelimeler: dendrites, solidification, growth from melt, organic compounds
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

Succinonitrile (SCN)-carbon tetrabromide (CTB) alloys for different concentrations of CTB (C0) were unidirectionally solidified with a constant temperature gradient (G=7.5 K/mm) at different growth rates (V=6.5-103.5 μm/s). The primary dendrite arm spacings, secondary dendrite arm spacings and dendrite tip radius were measured as a function of growth rates and compositions. Theoretical models for the dendrite arm spacings and tip radius have been compared with the experimental observations, and a comparison of our results with the current theoretical models and previous experimental results have also been made. © 2005 Elsevier B.V. All rights reserved.