Investigation of Tribological Behaviour on DLC Coatings for AA5051 using DC Sputtering

Abstract

DLC coatings are deposited on aluminium substrates to improve the wear resistance property of the substrates using sputtering deposition in this study. DLC coatings are deposited using the graphite target onto the Al5051 substrates using DC sputtering. The deposited coatings are then analyzed for their adhesion strength, hardness, coefficient of friction, and chemical compositions. The pin-on-disk method is conducted in vacuumed conditions, dry air conditions (0% RH), and ambient air conditions (40% RH). The different testing conditions have shown different results for the same testing sample. This indicates the nature of DLC film adsorption in ambient air conditions. The chemical composition study has further revealed the adsorbing compounds and the ability of hydrogen and water molecules to get adsorbed on the thin-film surface. This study gives insight into the effect of molecules present in the ambient air on the performance of DLC coatings. It investigates the effect of three DLC coatings deposited using the graphite target onto the Al5051 substrates using DC sputtering.

Diamond-Like Carbon: A Surface for Extreme, High-Wear Environments

“…These coatings are used in parallel with molecular additives, which are proposed to adsorb on the DLC to reduce friction and help prevent wear. Previous studies on DLC have focused on tribological measurements. − There is also some interest in biological systems such as protein and amino acid adsorption on fluorine-doped DLC. , There are a number of studies reported in the literature that have focused on the characterization of hydrogenated amorphous carbon; − however, there have been considerably fewer studies on non-hydrogenated DLC.…”

Synthesis, Characterization, and Wear Behavior of W-DLC Films Deposited on Si Substrates

“…These films have earned their place as essential components in various industries. From enhancing the performance of cutting tools to ensuring the reliability of hard disk drives and even advancing the realm of biomedical devices, the impact of DLC-based films is undeniable [5,6].…”

Retracted: Investigation of Tribological Behaviour on DLC Coatings for AA5051 using DC Sputtering

“…This article has been retracted by Hindawi following an investigation undertaken by the publisher [1]. This investigation has uncovered evidence of one or more of the following indicators of systematic manipulation of the publication process: Discrepancies in scope Discrepancies in the description of the research reported Discrepancies between the availability of data and the research described Inappropriate citations Incoherent, meaningless and/or irrelevant content included in the article Manipulated or compromised peer review …”

“…This article has been retracted by Hindawi following an investigation undertaken by the publisher [1]. This investigation has uncovered evidence of one or more of the following indicators of systematic manipulation of the publication process:…”