The Behavioral Corrosion Characterization of Aluminium AA6061/Chitosan Composites
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The high cost and negative environmental impact of traditionally made
aluminium metal matrix composites (AMMC) need their replacement with ecofriendly
materials with improved mechanical characteristics. The repurposing of
agricultural waste in innovative materials is critical to achieving a sustainable
society. This study utilized AA6061/chitosan at sieve size of 90μm created via
modified stir casting at weight proportions of 3, 6, 9, and 12 wt. %. The produced
composites reached a maximum hardness of 60.2 HRB at 9wt. % chitosan,
comparable to a 2.36 % improvement in AA6061 hardness, 57.4 HRB. Similarly,
tensile strength increased with increasing chitosan particles, from 83.07MPa for
the unreinforced alloy to a maximum of 114.92MPa for 12 wt. % AA6061
reinforcement with chitosan. The samples' XRD revealed clear evidence of
Hydroxyapatite, Ca10(PO4)6(OH)2, a component of teeth and bones that provides
strength. The corrosion characteristics findings reveal that AA6061+9 wt. %
chitosan has the lowest corrosion rate of all the samples. In addition, the
microstructure of AA6061 with chitosan strains of reinforcement was observed in
the AA6061/3wt. % SEM, eventually filling grain boundaries of the metal with
increasing reinforcements to provide evenly distributed fibrous links connecting
AA6061 grain structure at 6wt. % and 9wt. % reinforcement in the micrograph
Keywords
T Technology (General), TJ Mechanical engineering and machinery