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Volume 13, June 2017, Pages 21-35
Effect of SiC weight percentage
on tribological properties of Al-SiC metal matrix composites under
acid environment
Smrutiranjan Pradhan, Tapan K. Barman, Prasanta Sahoo, Goutam Sutradhar
Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India
Abstract
In this paper, Al-SiC MMCs reinforced with different
weight percentages of SiC content (5 wt.%, 7.5 wt.% and 10 wt.%) are
fabricated through the liquid stir casting method. The effect of
weight percentage of SiC on friction and wear properties of Al-SiC
MMC is investigated. Tribological tests are conducted under acid
environment in a pin-on-disk tribotester by varying the design
parameters (applied normal load and sliding speed) while the
duration of each experiment is kept constant for 30 minutes. It is
seen from the result that wear increases with increase in applied
load and sliding speed but friction coefficient shows a decreasing
trend with increase in load. The addition of SiC reinforcement
increases the wear resistance of the metal matrix composite. The
scanning electron microscope (SEM) and energy dispersive X-Ray (EDX)
technique are used to analyse the wear mechanism of worn surface.
From the microstructure study, it is seen that adhesive, abrasive
and corrosive wear mechanisms are present for removal of material
from the Al-SiC MMCs.
Keywords
Al-SiC MMC; Wear; COF; Corrosive environment
Full Text
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