Long-term immersion exposure of perlite-aluminium syntactic foam in seawater

Title: Long-term immersion exposure of perlite-aluminium syntactic foam in seawater
Creator: Chaves, Igor A.; Taherishargh, Mehdi; Fiedler, Thomas
Relation: Journal of Composite Materials Vol. 53, Issue 9, p. 1229-1240
Publisher Link: http://dx.doi.org/10.1177/0021998318796264
Publisher: Sage
Resource Type: journal article
Date: 2019
Description: Perlite-metal syntactic foam is a novel lightweight material with good specific strength and excellent energy absorption capabilities. To analyse its suitability in marine applications, perlite-metal syntactic foam has been immersed for 2 years in natural flowing seawater. The change of mass and mechanical properties has been studied as a function of exposure time. Results indicate a slow degradation of mechanical properties that can be attributed to a change of the macroscopic deformation mechanism. Interestingly, no evidence of significant corrosion was observed. Instead, the change in mechanical properties is triggered by the sedimentation of oxides and sulphates within the expanded perlite particles. Implications towards the long-term viability of such perlite-metal syntactic foam in marine applications are discussed.
Subject: cellular metal; perlite-metal syntactic foam; seawater; corrosion; mechanical properties
Identifier: http://hdl.handle.net/1959.13/1469171
Identifier: uon:48164
Identifier: ISSN:0021-9983
Language: eng
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