Suffin, Nur Surianni Ahamad
(2011)
Microstructure And Compressive Properties Of
Aluminum Foam Fabricated Using
Sintering Dissolution Process.
Masters thesis, Universiti Sains Malaysia.
Abstract
Sintering dissolution process (SDP) is a technique which enables fabrication of
aluminum foam as a suitable absorber material with good quality. The aim of this
research is to study the effect of various parameters towards morphology and
compression properties of aluminum foam fabricated using SDP method. In this
research, sodium chloride (NaCl) powders were used as space holder. Aluminum
foams were fabricated using SDP method which involves milling (1 hour),
compaction (200 MPa), sintering (570 ºC) and dissolution process (90 ºC). The first
part of this research is to investigate the effect of different space holder content in
aluminum foam on density, morphology, compression properties and energy
absorption. The result shows that the space holder contributes to higher porosity and
energy absorption which prevented the foam structure from collapsed during
compression loading. In contrast, too high space holder content leading to high
tendency of residual NaCl particles in aluminum foam which resulted in porous foam
with lower compression properties and energy absorption. It was found that
increasing dissolution time improved energy absorption due to complete dissolution
of NaCl particles.
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