Metallurgical and Materials Transactions A

, Volume 44, Issue 9, pp 4051–4058 | Cite as

Measurements of Thermal Conductivity Variations with Temperature for the Organic Analog of the Nonmetal–Nonmetal System: Urea–4-Bromo-2-Nitroaniline

  • Ümit Bayram
  • Esra Öztürk
  • Sezen Aksöz
  • Necmettin Maraşlı
Article
First Online:

Abstract

Thermal conductivity variations with temperature for solid phases in the Urea (U)–[X] mol pct 4-bromo-2-nitroaniline (BNA) system (X = 0, 2, 45, 89.9, and 100) were measured using the radial heat flow method. From graphs of thermal conductivity variations with temperature, the thermal conductivities of the solid phases at their melting temperature and temperature coefficients for the U–[X] mol pct BNA system (X  =  0, 2, 45, 89.9, and 100) were found to be 0.26, 0.55, 0.46, 0.38, and 0.23 W/Km and 0.007781, 0.005552, 0.002058, 0.002188, and 0.002811 K−1, respectively. The ratios of thermal conductivity of the liquid phase to thermal conductivity of the solid phase in the U–[X] mol pct BNA system (X  =  0, 2, 45, 89.9, and 100) were also measured to be 0.30, 0.44, 0.46, 0.49, and 0.51, respectively, with a Bridgman-type directional solidification apparatus at their melting temperature.

Keywords

Thermal Conductivity Thermal Conductivity Measurement Thermal Conductivity Ratio Radial Temperature Gradient Thermal Conductivity Variation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgments

This project was supported by the Erciyes University Scientific Research Project Unit under Contract No. FBY-11-3775 and the Nevşehir University Scientific Research Project Unit under Contract No. NEÜADP13F15. The authors thank the Erciyes University Scientific Research Project Unit and Nevşehir University Scientific Research Project Unit for their financial support.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2013

Authors and Affiliations

  • Ümit Bayram
    • 1
  • Esra Öztürk
    • 3
  • Sezen Aksöz
    • 4
  • Necmettin Maraşlı
    • 2
  1. 1.Institute of Science and Technology, Department of PhysicsErciyes UniversityKayseriTurkey
  2. 2.Department of Physics, Faculty of SciencesErciyes UniversityKayseriTurkey
  3. 3.Department of Physics, Faculty of Arts and SciencesKocaeli UniversityKocaeliTurkey
  4. 4.Department of Physics, Faculty of Arts and SciencesNevşehir UniversityNevşehirTurkey

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