Bueno, AHS, Solis, J, Zhao, H et al. (4 more authors) (2018) Tribocorrosion evaluation of hydrogenated and silicon DLC coatings on carbon steel for use in valves, pistons and pumps in oil and gas industry. Wear, 394–39. pp. 60-70. ISSN 0043-1648
Abstract
Several components in the oil and gas industry are subjected to wear and corrosion. This work evaluated the feasibility of using Diamond-Like Carbon (DLC) coatings in Subsea Safety Control Valves (SSCV), piston and pumps. These are made from API X65 carbon steel and are subjected to wear and corrosive/saline environments. Coatings were deposited using Plasma Enhanced Chemical Vapour Deposition (PECVD). The electrochemical behaviour of Silicon-doped and Hydrogenated DLC films was evaluated before and after wear tests. Film characterisation included nano-indentation, surface roughness, micro-abrasion testing, Raman spectroscopy, atomic force microscopy and scanning electron microscopy. Electrochemical tests and electrochemical impedance was also measured. Sliding wear tests against silicon nitride were conducted with a maximum initial Hertz stress of 150 and 400 MPa under dry and wet conditions. The H-DLC had better wear performance than Si-DLC. The advantages of H-DLC were related to higher hardness increasing the wear resistance; small galvanic coupling between DLC and steel, inhibiting the localised corrosion into the DLC defects; lowest anodic current, suggesting high resistivity to use as a corrosion barrier for steel and the corrosion process on the substrate that did not affect DLC properties (adhesion and wear/ corrosion resistance).
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Crown Copyright © 2017, Published by Elsevier B.V. This is an author produced version of a paper published in Wear. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Carbon-based Coatings; PVD Coatings; Steel; Sliding Wear; Corrosion-Wear; Electrochemistry |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Functional Surfaces (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Oct 2017 09:53 |
Last Modified: | 03 Oct 2018 00:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.wear.2017.09.026 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:122192 |