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Preparation of porous stainless steel hollow-fibers through multi-modal particle size sintering towards pore engineering

Allioux, Francois-Marie, David, Oana, Etxeberria Benavides, Miren, Kong, Lingxue, Pacheco Tanaka, David Alfredo and Dumée, Ludovic F. 2017, Preparation of porous stainless steel hollow-fibers through multi-modal particle size sintering towards pore engineering, Membranes, vol. 7, no. 3, pp. 1-15, doi: 10.3390/membranes7030040.

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Title Preparation of porous stainless steel hollow-fibers through multi-modal particle size sintering towards pore engineering
Author(s) Allioux, Francois-Marie
David, Oana
Etxeberria Benavides, Miren
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Pacheco Tanaka, David Alfredo
Dumée, Ludovic F.ORCID iD for Dumée, Ludovic F. orcid.org/0000-0002-0264-4024
Journal name Membranes
Volume number 7
Issue number 3
Article ID 40
Start page 1
End page 15
Total pages 15
Publisher MDPI AG
Place of publication Basel, Switzerland
Publication date 2017-08-04
ISSN 2077-0375
Keyword(s) coalescence
metal membrane
multi-modal distributions
neck formation
porous stainless steel hollow-fiber
Summary The sintering of metal powders is an efficient and versatile technique to fabricate porous metal elements such as filters, diffusers, and membranes. Neck formation between particles is, however, critical to tune the porosity and optimize mass transfer in order to minimize the densification process. In this work, macro-porous stainless steel (SS) hollow-fibers (HFs) were fabricated by the extrusion and sintering of a dope comprised, for the first time, of a bimodal mixture of SS powders. The SS particles of different sizes and shapes were mixed to increase the neck formation between the particles and control the densification process of the structure during sintering. The sintered HFs from particles of two different sizes were shown to be more mechanically stable at lower sintering temperature due to the increased neck area of the small particles sintered to the large ones. In addition, the sintered HFs made from particles of 10 and 44 μm showed a smaller average pore size (<1 μm) as compared to the micron-size pores of sintered HFs made from particles of 10 μm only and those of 10 and 20 μm. The novel HFs could be used in a range of applications, from filtration modules to electrochemical membrane reactors.
Language eng
DOI 10.3390/membranes7030040
Field of Research 090404 Membrane and Separation Technologies
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2017, by the authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30102742

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.