Aluminium Foam Sandwichs
Aluminium Foam Panels
Since some years aluminium foam sandwich panels become popular because of their properties: very high stiffness combined with a very low density.
They are becoming famous for their insulation abilities and for the fact that these panels can be used to protect from impacts and radiation.
And even more important: aluminium foam panels – as sandwich or pure foam – can be used to create amazingly beautiful furnitures, facades or entire buildings.
Since our panels do not rust we’re selling them with a lifelong warranty!
About the material:
Aluminium scrap is molten using various amounts and compositions, adding some chemicals as well as applying different agitation conditions.
The result is – for producing pure foam panels – a huge ‘aluminium bread’ that will be sliced up to get the panels needed for the individual project. It is even possible to obtain ‘translucent’ panels for indirect lighting on furnitures, interior design or facades.
In order to produce Aluminium Foam Sandwichs the melting and subsequently foaming process is conducted between two aluminium sheets that will be metallically bond to the foam.
Aluminium Foam is stiff and ultra light because of its porous structure. The use of foamed aluminium is very advantageous in large sandwich constructions and in the stiffening of hollow aluminium profiles.
Aluminium Foams are disperse systems of a gaseous phase and a solid aluminium phase with a porosity of up to 80 %. They can consist of an open or a closed cell structure depending on the production process. Pure liquids do not form foams. There has to be a substance that inhibits the coalescence of the gas bubbles. In case of Composite Aluminium Foam these stabilizing agents are oxides, ceramic particles, carbides or inter-metallic compounds, depending on the production method. The gas bubbles in the foam can be spherical or polyhedral depending on the porosity of the foam. With a porosity of more than 74 % they are polyhedral, otherwise they are spherical. The reason for this is the surface tension. In a smaller porosity the surface tension is higher than in bigger porosity so the bubbles are spherical to possess a surface energy as small as possible.
The cells of a closed cell structure are bordered by very thin films of the liquid or solid phase. The edges of the cell walls that are connected by nodes form the web of the cell structure. If the cell walls are damaged or if they flow into the edges at the end of the foam formation, an open cell structure is formed.
We are happy to help our clients to decide what kind of foam panels suit their projects best.