Effect of heating rate on pore structure of porous FeAl material

H. Y. Gao, Yue Hui He, P. Z. Shen, N. P. Xu, J. Zou, Y. Jiang, B. Y. Huang, C. T. Liu

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

The sintering behaviour of elemental powders of Fe and Al was investigated at various heating rates (0.5-10°C min-1). It was found that the formation of porous FeAl material was accompanied by the volume expansion during the formation of the intermediate phase Fe2Al5. The final pore structure of porous FeAl material depends strongly on the heating rate; the higher the heating rate, the higher the volume expansion and the larger the porosity and the maximum pore size. It has been found that the pore structures produced with different heating rates experienced different formation routes.

Original languageEnglish
Pages (from-to)171-175
Number of pages5
JournalPowder Metallurgy
Volume51
Issue number2
DOIs
StatePublished - 2008

Keywords

  • FeAl intermetalics
  • Heating rate
  • Kirkendall effect
  • Porous material

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