Effect of Process Parameters on Tribological Properties of Ni‒P‒Al₂O₃ Composite Coatings

Abstract:

The present study investigates the effect of different coating parameters along with heat treatment on the tribological properties of Ni–P–Al₂O₃ composite coating, deposited on mild steel substrate. The coefficient of friction and wear depth (μm) are optimized for increasing performance of the composite coating using Grey Taguchi analysis by considering three parameters, namely, concentration of nickel source, concentration of reducing agent, and concentration of alumina particles. Tribological properties of the composite coating after heat treatment at 400°C are evaluated by using plate-on-roller type of tribotester. It is observed that concentration of reducing agent and alumina particles have the significant influence on corrosion resistance at 400°C. Effects of operating parameters on microstructure, and crystallization are investigated using SEM and EDX techniques.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 1300-1304
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.1300
• Online since: July 2014
• Authors: Prasanna Gadhari*, Prasanta S
• Keywords: Friction, Grey Analysis, Ni-P-Al₂O₃ Composite Coating, Optimization, Wear

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