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Synthesis of open-celled metal foams by replication technique

: Adler, J.; Kümmel, K.; Quadbeck, P.; Standke, G.; Stephani, G.

Kieback, B.; Stephani, G. ; Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung -IFAM-, Dresden:
CELLMET 2005, Cellular Metals for Structural and Functional Applications : Proceedings of the International Symposium on Cellular Metals for Structural and Functional Applications, held May 18 - 20, 2005, in Dresden, Germany
Stuttgart: Fraunhofer IRB Verlag, 2005
ISBN: 3-8167-6931-4
ISBN: 978-3-8167-6931-6
International Symposium Cellular Metals for Structural and Functional Applications (CELLMET) <1, 2005, Dresden>
Conference Paper
Fraunhofer IFAM ()
Fraunhofer IKTS ()
offene Zelle; Metallschaum; Vernetzung; Polyurethan; Schablone; nichtrostender Stahl; Porosität; Druckprüfung; Permeabilität; akustisches Messverfahren; Dichte=Masse; Festigkeit; Luftströmung; Schallabsorption

Open-celled metal foams were synthesized using a replication technique.
Therefore a reticulated polyurethane template was coated by a slurry and removed thermally, followed by a sintering step. Since the process is feasible for a multiplicity of metals the experiments were performed on the example of stainless steel 316L. Highly porous components were obtained showing densities between 0.3 and 0.8 g/cm(exp 3). The cell structure is exceedingly homogeneous with the cell sizes being adjustable in the range of 10-80 ppi. In order to characterise the properties, compression tests, permeability, and acoustical measurements were carried out. A significant influence of the density as well the cell size on strength, airflow and sound absorption properties was noticed.