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 language | English |
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Pages (from-to) | 2950-2953 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 57 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2003 Jun |
Keywords
- Alloy
- Conductivity
- Temperature
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering