High porosity copper foam

In the present work, copper foam was made by a powder metallurgy route by using polyurethane that is subsequently removed by heating in air. The copper foam structure is almost completely oxidised at the intermediate stage, but reduced on sintering to produce copper foams with porosities from 85 to...

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Bibliographic Details
Published in:Journal of materials science 2004-09, Vol.39 (18), p.5877-5880
Main Authors: XIE, S, EVANS, J. R. G
Format: Article
Language:English
Subjects:
Aerosols
Aerosols and foams
Applied sciences
Chemistry
Colloidal state and disperse state
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
General and physical chemistry
Materials science
Materials synthesis
materials processing
Metal foams
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Porosity
Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
Specific materials
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Description
Summary:In the present work, copper foam was made by a powder metallurgy route by using polyurethane that is subsequently removed by heating in air. The copper foam structure is almost completely oxidised at the intermediate stage, but reduced on sintering to produce copper foams with porosities from 85 to 91 %. The powder was < 53 mm gas atomised OHFC copper supplied vacuum, packed by Osprey Metals Ltd. (Neath, Wales). The foaming system consisted of a low silicone polyol resin, Flexocel SR300W with density 1030 kgm-3 and isocyanate based on diphenyl-methane diisocyanate (MDI) grade 174 with density 1240 kgm-3 supplied by Bentley Chemicals Ltd. Kidderminster, UK.
ISSN:0022-2461
1573-4803
DOI:10.1023/B:JMSC.0000040107.04387.b7