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Enhancement of tribological performance of centrifuge cast functionally graded Cu-10Sn-5Ni alloy with ceramic reinforcements

Publication Type : Journal Article

Publisher : Journal of Materials Research and Technology

Source : Journal of Materials Research and Technology, Elsevier Editora Ltda, Volume 8, Number 4, p.3415-3423 (2019)

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Keywords : Adhesive wears, Adhesives, Alumina, aluminum oxide, Casting, Centrifuges, Ceramic reinforcements, Coefficient of frictions, Copper alloys, Friction, Friction coefficients, Functional graded materials, Functionally graded, Mechanically mixed layers, Nickel alloys, Reinforcement, scanning electron microscopy, Silicon carbide, Ternary alloys, Tin alloys, Tribological performance, Tribology, Wear of materials

Campus : Coimbatore

School : School of Engineering

Department : Mechanical Engineering

Year : 2019

Abstract : Functional grade composites Cu-10Sn-5Ni reinforced with 10 wt%SiC and 10 wt%Al2O3, respectively, and their alloy was developed through horizontal centrifuge cast technique. Sample composites and alloy were cast at cylindrical dimensions of φout100 × φin70 × 100 mm. They were later subjected to tribology analysis during non-lubricated sliding. Anti-wear performance variations at inner (0-8 mm) and outer (8-15 mm) wall thicknesses of both composites and alloy were experimented using pin-on-disc tribo-tester. Experimentation with increasingly varied parameters like load and slid distance showed a rising trend of wear and friction. This was observed while comparing between the least (10 N, 500 m) and highest (60 N, 3000 m) varied parameter; for both alloy and composites. Also, a proportional decline in coefficient of friction with increase in slid velocity was exhibited for both composites; whereas alloy showed a linear rise. Worn specimen analysis using scanning electron microscopy on both composites revealed Mechanically Mixed Layer formation at both zones. This caused reduction in friction coefficient at high velocity (6 m/s). © 2019 The Authors.

Cite this Research Publication : Dr. Radhika N and Sam, M., “Enhancement of tribological performance of centrifuge cast functionally graded Cu-10Sn-5Ni alloy with ceramic reinforcements”, Journal of Materials Research and Technology, vol. 8, pp. 3415-3423, 2019.

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