Microstructure and Wear Analysis of FeBCr Based Coating Deposited by HVOF Method
Journal Title: Tribology in Industry - Year 2014, Vol 36, Issue 2
Abstract
Thermally sprayed coatings that are based on FeBCr-related alloy powders are widely used to improve properties such as the surface hardness and wear resistance of a variety of coated metal substrate materials. Gray cast iron is widely used in the automobile industry due to its low cost and performance. In this work Gray cast iron substrate is coated with FeBCr alloy powder to improve its performance. The microstructure and micro abrasive wear performance of both the uncoated substrates and the coated substrates were characterized by optical microscopy as well as by Scanning Electron Microscope (SEM). In addition, X-ray Diffraction (XRD) was undertaken in the partial characterization of the coating. The densely layered coating had porosity levels that were below 2.5 % and a high surface hardness, of the order of 980 HV0.1. The coating exhibited excellent wear resistance when subjected to the ball-cratering test method. The low coefficients of friction of hard coating on the substrate were recorded. The wear performance of the coating was nearly 82 % better than that of the substrate, with a 0.05 N load, even under severe three body abrasive conditions.
Authors and Affiliations
M. S. Priyan , P. Hariharan , A. Azad , K. S. Kumar
Keywords
Related Articles
- EP ID EP110664
- DOI -
- Views 144
- Downloads 0
Optimization of CO2 Laser Cutting Process using Taguchi and Dual Response Surface Methodology
Selection of optimal cutting parameter settings for obtaining high cut quality in CO2 laser cutting process is of great importance. Among various analytical and experimental optimization methods, the application of Taguc...
Tribological Behaviour of Smart Fluids Influenced by Magnetic and Electric Field – A Review
This review paper highlights the tribological behaviour and performance of smart fluids. Two main kinds of smart fluids, that respond to a suitable external stimulus are investigated – electrorheological and magnetorheol...
Effect of Surface Roughness and Temperature on EHL for Parallel Surfaces Subjected to High Acceleration
Frictional wear is one of the most common causes of material failure. One of the most common techniques to overcome this is to lubricate the surfaces in contact using an optimum amount of appropriate lubricant. Same tech...
Friction in Orthogonal Cutting Finite Elements Models with Large Negative Rake Angle
In this paper, orthogonal cutting finite elements models are built for the investigation of the impact of large negative rake angles on the friction coefficient in the tool-chip interface in machining. The simulation res...
Magnetic Fluid-Based Squeeze Film Performance in Rotating Curved Porous Circular Plates: The Effect of Deformation and Surface Roughness
This investigation aims at analyzing the behaviour of a magnetic fluid based squeeze film between two rotating transversely rough porous circular plates taking bearing deformation into consideration. The results pr...