Study on Wear Characteristics of Surfaces Coated with HVOF and Aluminium Alloy Using Multi-Body Dynamics AnalysisPages 78-86
R. Suresh Abstract:
The objective of this study was to compare and analyze the wear behaviors of High-Velocity Oxy-Fuel (HVOF) NiCr-B4C sprayed coated Al6061MMC and Al6061 alloy. Surface coatings are widely used for their excellent wear resistance and low friction performance. Wear prediction is crucial for the engineering application of these components. In this work, the wear simulation approach using COMSOL, a commercial finite element (FEA) program, is presented. The findings presented here are based on a stabilized model obtained through several software iterations exploring different options. The wear depth of Al6061 alloy and HVOF Coated Al6061MM is evaluated using the linear Archad's wear law. The pins on disc components are assumed to have 3-dimensional flexible shapes and the contact surfaces exhibit elastic-plastic material behavior. The impact of debris and oxide production pathways is considered by utilizing a wear coefficient (k) derived from experimental investigation. HVOF-sprayed coatings based on Ni80Cr20-B4C have shown promising tribological characteristics for wear applications. The results of the finite element simulation are in good agreement with the experimental result.
Keywords: Wear simulation, Archard, HVOF coating, Comsol
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