Abstract The unabated thirst for fuel-saving, cost-efficient, attractive structural and lubricating properties of the materials have made the researchers focus on the new generation of aluminum matrix composites for automotive… Click to show full abstract
Abstract The unabated thirst for fuel-saving, cost-efficient, attractive structural and lubricating properties of the materials have made the researchers focus on the new generation of aluminum matrix composites for automotive and aerospace application. Aluminum-based composites with hBN particle reinforcement could improve the tribological properties which reduce the wear rate of the components. The present study focused on the fabrication of a novel self-lubricating Al-SiC-hBN hybrid composites and its wear properties with unreinforced aluminium alloy. Structural and microstructural changes of the as-cast composites were examined by X-Ray diffraction and scanning electron microscope. Microstructural analysis reveals that uniform distribution of the reinforcing phase results in an increase in the density of the as-cast sample from 2.547 g/cm3 to 2.713 g/cm3. The pin-on-disc method is used to study the resistance to friction of the as-cast composite (Al-5 wt.% hBN-4 wt.% SiC) and found that, hBN particulates helps to minimize the wear loss at ambient temperature.
               
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