Open-Cell Aluminum Foams by the Sponge Replication Technique

Open-cell aluminum foams were manufactured by a sponge replication technique having a total porosity of ~90%. The influence of the thermal processing conditions such as atmosphere and temperature on the cellular structure, phase composition porosity, thermal conductivity, and compressive strength of...

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Bibliographic Details
Published in:Materials 2019-11, Vol.12 (23), p.3840
Main Authors: Sutygina, Alina, Betke, Ulf, Scheffler, Michael
Format: Article
Language:English
Subjects:
Aluminum
Aluminum oxide
Burnout
Cellular structure
Compressive strength
Geometry
Heat conductivity
Heat exchangers
Heat transfer
Manufacturing
Metal foams
Open cell porosity
Particle size
Phase composition
Polyvinyl alcohol
Porosity
Replication
Sintering
Software packages
Thermal conductivity
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Summary:Open-cell aluminum foams were manufactured by a sponge replication technique having a total porosity of ~90%. The influence of the thermal processing conditions such as atmosphere and temperature on the cellular structure, phase composition porosity, thermal conductivity, and compressive strength of the foams was studied. It was found that the thermal processing of aluminum foams in Ar at temperatures up to 800 °C led to aluminum foams with a reduced strut porosity, a lower amount of aluminum oxide, a higher thermal conductivity, and a higher compression strength, compared to foams thermally processed in air. These results were explained by the lower amount of aluminum oxide after thermal processing of the foams.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma12233840