Aluminum Perlite Syntactic Foams

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 us...

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Published inMaterials Vol. 15; no. 15; p. 5446
Main Authors Thalmaier, György, Sechel, Niculina Argentina, Csapai, Alexandra, Popa, Catalin Ovidiu, Batin, Gabriel, Gábora, Andras, Mankovits, Tamas, Vida-Simiti, Ioan
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 08.08.2022
MDPI
Subjects
Aluminum
Carbon
Compression tests
Economic justification
Energy absorption
expanded perlite
Perlite
Plasma sintering
Pore size
Porosity
Porous materials
Powder metallurgy
Scanning electron microscopy
Sintering (powder metallurgy)
Software
Spark plasma sintering
Syntactic foams
Titanium
expanded perlite
compression tests
syntactic foams
spark plasma sintering
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Summary: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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ISSN:1996-1944
1996-1944
DOI:10.3390/ma15155446