AN INVESTIGATION ON THE EFFECT OF NI-CR COATING THICKNESS ON THE SCRATCH RESISTANCE OF PARTICLE-
DOI:
https://doi.org/10.55766/sujst-2023-06-e0864Keywords:
Aluminium Matrix Composites, Ni-Cr Coating, Scratch Test, SiC particlesAbstract
Composite materials are best suited for many engineering applications due to their high strength-to-weight ratio. Metal matrix composites have drawn attention due to their superior mechanical qualities and economics in preparation. This study uses stir casting to prepare aluminum 6065 with SiC particles in varied concentrations. Scanning electron microscopy (SEM) was used to examine the effects of particle content (8 to 12 wt%), loading variables, and Ni-Cr coating thickness (100 and 200 microns) on the scratch resistance of the composites. Scratch tests were also used to examine the friction coefficient and scratch morphology of the aluminum matrix composites. When compared to lower particle concentrations in the matrix material, it has been found that more significant particle content provides more excellent scratch resistance.
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