Aluminum integral foams with near-microcellular structure

Hartmann J, Trepper A, Körner C (2011)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2011


Book Volume: 13

Pages Range: 1050-1055

Journal Issue: 11

DOI: 10.1002/adem.201100035


In the present work the influence of the amount and size distribution of blowing agent particles (magnesium hydride, MgH) on the resulting pore structure of aluminum foams is studied. A modified die casting process called integral foam moulding (IFM) is used where aluminum melt mixed with blowing agent is injected into a mould cavity. High cooling rates at the wall of the die result in the formation of a dense shell, whereas, the decomposition of the blowing agent in the inner region leads to a cellular core. Different particle size fractions of MgH are provided by sieving; the resulting pore structures of the foams are analyzed by microcomputed tomography. The results suggest that the pore size distribution represents a direct image of the size distribution of the used powder as well as of the particle density within the melt. This finding allows the production of homogeneous microcellular foams by using a high number of particles with a narrow size distribution. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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Hartmann, J., Trepper, A., & Körner, C. (2011). Aluminum integral foams with near-microcellular structure. Advanced Engineering Materials, 13(11), 1050-1055.


Hartmann, Johannes, André Trepper, and Carolin Körner. "Aluminum integral foams with near-microcellular structure." Advanced Engineering Materials 13.11 (2011): 1050-1055.

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