Tortuosity factor for porous FeAl intermetallics fabricated by reactive synthesis

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Hai-Yan Gao
  • Yue-Hui He
  • Jin Zou
  • Nan-Ping Xu
  • C. T. Liu

Detail(s)

Original languageEnglish
Pages (from-to)2179-2183
Journal / PublicationTransactions of Nonferrous Metals Society of China (English Edition)
Volume22
Issue number9
Publication statusPublished - Sep 2012
Externally publishedYes

Abstract

The tortuosity factor is the most critical parameter for the pore characteristic of porous materials. The tortuosity factor for porous FeAl intermetallics was studied based on the Darcy law and Hagen-Poiseuille equation. Porous stainless steel with the same pore structure parameter as porous FeAl was fabricated by powder metallurgy method for comparison. The results show that the tortuosity factor of porous FeAl intermetallics is smaller than that of porous stainless steel when their pore structure parameters are the same. The average tortuosity factor is 2.26 for the porous FeAl material and 2.92 for the porous stainless steel, calculated by Hagen-Poiseuille equation. The reason of the different tortuosity factors for porous FeAl and porous stainless steel was also explored through studying the pore formation mechanisms of the two types of porous materials. © 2012 The Nonferrous Metals Society of China.

Research Area(s)

  • FeAl, intermetallics, porous material, tortuosity factor

Citation Format(s)