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

doi:10.1016/S0167-577X(02)01403-9

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

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	2950-2953
Number of pages	4
Journal	Materials Letters
Volume	57
Issue number	19
DOIs	https://doi.org/10.1016/S0167-577X(02)01403-9
Publication status	Published - 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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title = "Temperature dependence of thermal conductivity in W and W-Re alloys from 300 to 1000 K",

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.",

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pages = "2950--2953",

journal = "Materials Letters",

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T1 - Temperature dependence of thermal conductivity in W and W-Re alloys from 300 to 1000 K

AU - Tanabe, T.

AU - Eamchotchawalit, C.

AU - Busabok, C.

AU - Taweethavorn, S.

AU - Fujitsuka, M.

AU - Shikama, T.

PY - 2003/6

Y1 - 2003/6

N2 - 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.

AB - 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.

KW - Alloy

KW - Conductivity

KW - Temperature

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JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

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

Abstract

Keywords

ASJC Scopus subject areas

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