Abstract
The current work has been undertaken to see the effect of Gr/Sn as a solid lubricant for the development of hybrid aluminum metal matrix composite (HAMCs). HAMCs were fabricated by reinforcing 10 wt% (sillimanite + ilmenite) minerals with or without 1 wt% Sn/Gr/both via stir casting technique. Optical microscopy revealed a homogenous distribution of reinforced particles with the refinement of silicon. Vicker hardness of the HAMCs showed a good interfacial bonding of particles with the matrix. The formation of porosity during fabrication of composite is ~ 1.74 %. The maximum reduction in wear rate and coefficient of friction of the HAMCs are for composite containing tin and graphite as lubrication agents. This composite exhibited a ~ 6 % less wear resistance than commercial grey cast iron specimen used in the brake rotor in the automobile industries. It seems that wear rate of composite containing tin and graphite as solid lubricants are in tune with the cast-iron. Abrasive wear was dominant at low loads and adhesive wear at high loads, as confirmed from SEM analysis.
Original language | English |
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Pages (from-to) | 5629-5645 |
Number of pages | 17 |
Journal | Silicon |
Volume | 14 |
Issue number | 10 |
DOIs | |
State | Published - Jul 2022 |
Externally published | Yes |
Keywords
- Density
- Hardness
- Ilmenite
- LM30 alloy
- Sillimanite
- Solid lubricants
- Wear and friction