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COBEM 2021
26th International Congress of Mechanical Engineering
THIN FILMS: INFLUENCE OF THE MICRO-ABRASIVE WEAR MODES ON THE VOLUME OF WEAR AND COEFFICIENT OF FRICTION
Submission Author:
Ronaldo Cozza , SP
Co-Authors:
Jorge Thiago de Sousa Lima Wilcken, Marcelo Macedo, Ronaldo Cozza
Presenter: Jorge Thiago de Sousa Lima Wilcken
doi://10.26678/ABCM.COBEM2021.COB2021-0042
Abstract
The purpose of this research was to study the influence of the micro-abrasive wear modes on wear volume (V) and the friction coefficient (µ) behavior of thin films submitted to micro-abrasive wear. Experiments were conducted with thin films of TiN, TiAlN, TiN/TiAlN, TiHfC, ZrN and TiZrN, using a ball of AISI 52100 steel and abrasive slurries prepared with black silicon carbide (SiC) particles and glycerine. The results show that the abrasive slurry concentration affected the micro-abrasive wear modes (“grooving abrasion” or “rolling abrasion”) and, consequently, the magnitude of the wear volume and friction coefficient, as described: i) a low value of abrasive slurry concentration generated “grooving abrasion”, which was related to a relatively low wear volume and high friction coefficient; ii) a high value of abrasive slurry concentration generated “rolling abrasion”, which was related to a relatively high wear volume and low friction coefficient.
Keywords
Micro-abrasive wear, Grooving abrasion, Rolling abrasion, thin films, Wear volume, friction coefficient
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