Materials (Aug 2022)

Aluminum Perlite Syntactic Foams

  • György Thalmaier,
  • Niculina Argentina Sechel,
  • Alexandra Csapai,
  • Catalin Ovidiu Popa,
  • Gabriel Batin,
  • Andras Gábora,
  • Tamas Mankovits,
  • Ioan Vida-Simiti

DOI
https://doi.org/10.3390/ma15155446
Journal volume & issue
Vol. 15, no. 15
p. 5446

Abstract

Read online

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.

Keywords