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Thermal diffusivities of uniaxially cold-pressed Fe2Mo powders

Authors
  • Hayashi, Miyuki1
  • Rajter, Richard2
  • Morales, Ricardo1
  • Seetharaman, Seshadri1
  • 1 Department of Materials Science and Engineering, Royal Institute of Technology, Sweden , (Sweden)
  • 2 Department of Materials Science and Engineering, Massachusetts Institute of Technology, USA , (United States)
Type
Published Article
Journal
International Journal of Materials Research
Publisher
De Gruyter
Publication Date
Feb 05, 2022
Volume
94
Issue
11
Pages
1179–1184
Identifiers
DOI: 10.1515/ijmr-2003-0215
Source
De Gruyter
Keywords
Disciplines
  • Articles/Aufsätze
License
Yellow

Abstract

Fe2Mo powders have been produced from Fe2MoO4 powders by gas – solid reduction using pure H2 gas at 1023 and 1173 K. The thermal diffusivity of the cold-pressed Fe2Mo powders having a relative density between 0.52 and 0.72 has been measured at room temperature both in air and in vacuum using the laser-flash method. A correlation was observed between the thermal diffusivity and the relative density for the powders reduced at different temperatures, regardless of the difference in microstructure of the powders. In order to explain the porosity dependence of the effective thermal conductivity, a new simple method developed based on the Ohm’s law models was used. The model successfully simulates the experimental data, and the thermal conductivity of bulk Fe2Mo was estimated as 10.8 W/mK.

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