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Updated: Sep 1, 2025

Casting Protocols for the Production of Open Cell Aluminum Foams by the Replication Technique and the Effect on Porosity
Published on: December 11, 2014
Aluminum Perlite Syntactic Foams
György Thalmaier1, Niculina Argentina Sechel1, Alexandra Csapai1
1Department of Materials Science and Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Ave., 400641 Cluj-Napoca, Romania.
Abstract:
This paper presents the usage of spark plasma sintering (SPS) as a method to obtain aluminum-expanded perlite syntactic foams with high porosity. In the test samples, fine aluminum powder with flaky shape particles was used as matrix material and natural, inorganic, granular, expanded perlite was used as a space holder to ensure high porosity (35−57%) and uniform structure. SPS was used to consolidate the specimens. The structures were characterized by scanning electron microscopy and compression tests. Energy absorption (W~7.49 MJ/m3) and energy absorption efficiency (EW < 90%) were also determined.
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