Dependency of thermal conductivity on the temperature and composition of d-camphor in the neopentylglycol-d-camphor alloys

BAYRAM Ü., Aksöz S., MARAŞLI N.

Thermochimica Acta, cilt.531, ss.12-20, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 531
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.tca.2011.12.021
  • Dergi Adı: Thermochimica Acta
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.12-20
  • Anahtar Kelimeler: Thermal conductivity, Temperature coefficients, NPG, DC, Radial heat flow
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

Dependencies of thermal conductivity of solid phases for neopentylglycol (NPG)-[x] wt.% d-camphor (DC), x = 0, 3, 30, 46, 70 and 96 alloys on temperature and composition have been investigated by using radial heat flow apparatus. From graphs of the solid phases thermal conductivity variations versus temperature, the thermal conductivities of the solid phases at their melting temperature and temperature coefficients for NPG-[x] wt.% DC, x = 0, 3, 30, 46, 70 and 96 alloys were found to be 0.29, 0.28, 0.27, 0.26, 0.25 and 0.24 W/Km and 0.002996, 0.002694, 0.005690, 0.010626, 0.003520 and 0.001404 K -1, respectively. The ratios of thermal conductivity of liquid phase to thermal conductivity of solid phase for NPG-[x] wt.% DC, x = 0, 3, 30, 46, 70 and 96 alloys at their melting temperature were found with a Bridgman type directional solidification apparatus to be 1.07, 0.93, 0.43, 0.50, 0.40 and 0.35, respectively. © 2012 Elsevier B.V. All rights reserved.