Temperature dependence of thermal conductivity in W and W-Re alloys from 300 to 1000 K

T. Tanabe, C. Eamchotchawalit, C. Busabok, S. Taweethavorn, M. Fujitsuka, T. Shikama

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The thermal conductivities of W and W-Re alloys with Re contents of up to 25% were obtained from their thermal diffusivity data. The W and W-Re alloys were fabricated by powder metallurgy process. The samples with 8-mm diameter and 1-mm thickness were prepared by wire cutting tool. The thermal diffusivities of W and W-Re alloys were measured from room temperature to 1000 K. The results show that the thermal conductivity of the W decreases while those of W-Re increase when temperature increases. Thermal conductivity due to electron estimated from Wiedeman-Franz-Lorenz law in W decreases with temperature while those in W-Re alloy increases. The contribution of phonon on the thermal conductivity of W with high percent Re proved to be less than the contribution of electron at high temperatures.

Original languageEnglish
Pages (from-to)2950-2953
Number of pages4
JournalMaterials Letters
Volume57
Issue number19
DOIs
Publication statusPublished - 2003 Jun

Keywords

  • Alloy
  • Conductivity
  • Temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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