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Micrograph 636 and full record
- Micrograph no
- 636
- Brief description
- Alporas' closed cell aluminium foam
- Keywords
- alloy
, Alporas, aluminium , aluminium foam, cell , composite foam, composite material , foam , metal - Categories
- Foam, Metal or alloy, Metal or alloy composite foam
- System
- Al
- Composition
- Not specified
- Standard codes
- Reaction
- Titanium hydride is used as a foaming agent
- Processing
- The 'Alporas' technique involves use of 1 to 3 wt% titanium hydride to a modified melt as a foaming agent
- Applications
- Closed cell aluminium foams are an ultra-light material, with potential structural applications in transport and construction. They may also be used in energy absorbing structures and heat exchangers
- Sample preparation
- Technique
- Photography (no microscope)
- Length bar
- 6 mm
- Further information
- Additions are made to molten aluminium or aluminium alloy to modify the melt viscosity and make it suitable for foaming. 1 to 3 wt% titanium hydride is then added to the melt, and this foams the melt by releasing hydrogen. The foamed melt solidifies to yield a closed cellular structure with an average cell size of 4.5 mm
- Contributor
- Dr V Gergely
- Organisation
- Department of Materials Science and Metallurgy, University of Cambridge
- Date
- 03/10/02
- Licence for re-use
Attribution-NonCommercial-ShareAlike 4.0 International
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