Title: Effect of counter faces on sliding wear behavior of WC-Cr3C2-Ni composite coating deposited by high velocity oxy fuel
Abstract: WC based cermet coatings deposited by thermal spray techniques are extensively used in applications where superior sliding wear resistance is a primary need. The present study aims to investigate relative effect of different counter faces on WC-Cr3C2-Ni composite coatings developed by high-velocity oxy-fuel (HVOF) technique for the coefficient of friction, wear factor and damage to the coatings during the dry sliding tests. The experiments were following ASTM G99 on the ball-on-disc tribometer at room temperature with counter bodies alumina (Al2O3), silicon nitride (Si3N4) and bearing steel (ASTM 52100). The detailed information about wear mechanisms of coatings has been accumulated by scanning electron microscope (SEM). The outcomes from the testing of the coating were relatively studied with wear volume loss against each of the counter body. The tribo-pair formed by WC-Cr3C2-Ni coating with Si3N4 recommended as the least coefficient of friction has been recorded during dry sliding process. The wear of WC-Cr3C2-Ni coatings against Al2O3 ceramic counter balls is maximum and has been dominated by abrasive grooving, brittle cracking and spalling.
Publication Year: 2020
Publication Date: 2020-09-22
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 12
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