Aluminum integral foams with near-microcellular structure

Journal article
(Original article)


Publication Details

Author(s): Hartmann J, Trepper A, Körner C
Journal: Advanced Engineering Materials
Publication year: 2011
Volume: 13
Journal issue: 11
Pages range: 1050-1055
ISSN: 1438-1656
Language: English


Abstract


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.



FAU Authors / FAU Editors

Hartmann, Johannes
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Research Fields

Lightweight Materials
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


How to cite

APA:
Hartmann, J., Trepper, A., & Körner, C. (2011). Aluminum integral foams with near-microcellular structure. Advanced Engineering Materials, 13(11), 1050-1055. https://dx.doi.org/10.1002/adem.201100035

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

BibTeX: 

Last updated on 2018-13-12 at 20:50