Effect of pressure on pore structure of porous FeAl intermetallics

H. Y. Gao; Y. H. He; P. Z. Shen; Y. Jiang; C. T. Liu

doi:10.1016/j.apt.2015.03.002

Effect of pressure on pore structure of porous FeAl intermetallics

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Overview

29 Scopus Citations

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Author(s)

H. Y. Gao
Y. H. He
P. Z. Shen
Y. Jiang
C. T. Liu

Related Research Unit(s)

Centre for Advanced Structural Materials

Detail(s)

Original language	English
Pages (from-to)	882-886
Journal / Publication	Advanced Powder Technology
Volume	26
Issue number	3
Publication status	Published - 1 May 2015

Link(s)

DOI	DOI https://doi.org/10.1016/j.apt.2015.03.002 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84931562032&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(869701f5-20d4-4deb-8269-5355887c8398).html

Abstract

A series of porous FeAl intermetallics with nominal composition of Fe-25 wt.% Al was fabricated under pressure ranging from 60 MPa to 360 MPa by Fe and Al elemental powder reactive synthesis. The effect of pressure on the pore structure of the resultant porous FeAl intermetallics was systematically studied. Results show that open porosity, maximum pore size and permeability can be manipulated by varying the pressure. Permeability decreases with increasing pressure. Permeability (K), open porosity (θ) and maximum pore size (d_m) were verified to meet the Hagen-Poiseuille equation. A universal equation of K = Ad_m²θ, with A = 0.2379, was established to reflect the relationship between the permeability and pore structure parameters for porous FeAl intermetallics fabricated under different pressure.