Tribocorrosion behaviour of DLC-coated 316L stainless steel

Azzi, M.; Paquette, Maude; Szpunar, Jerzy A.; Klemberg-Sapieha, J.E.; Martinů, L.

doi:10.1016/j.wear.2009.02.006

Cited by 122 publications

(69 citation statements)

References 22 publications

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“…DLC as-deposited and polished DLC had similar behaviour, but the latter had a current oscillation. This could be an electrochemical effect associated with pinholes [25,35]. The current density oscillation on the polished sample can be due to electrochemical breakdown of the passive film on the bottom of these pinholes and re-passivation in these areas.…”

Section: Resultsmentioning

confidence: 99%

Wear–Corrosion Resistance of DLC/CoCrMo System for Medical Implants with Different Surface Finishing

et al. 2009

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The field of medical implants in the human body is a growing area with diverse tribological aspects. This application field has its own specific characteristics, dominated by stringent quality requirements due to the human suffering and sometimes life-threatening consequences of a surface failing to fulfil its required function. Combined wear-corrosion tests could provide more complete information about the implant behaviour in the aggressive body environment than separate wear and corrosion testing. Combined wear-corrosion experiments were performed using a reciprocating ball-on-plate apparatus equipped with an electrochemical cell. Untreated CoCrMo alloy samples as well as diamond-like carbon (DLC) coated samples were used as plate. The DLC coatings were tested with three different surface finishes: as-deposited, polished with diamond and brushed. All DLC coated samples with and without mechanical finishing had lower corrosion activity under wear-corrosion conditions and also smaller wear tracks when compared with the CoCrMo alloy. The current density for the coated alloy was about two orders of magnitude lower on average (10 -5 vs. 10 -3 A cm -2 ) and had a final coefficient of friction of only 50% of the uncoated metal (0.15 vs. 0.3). The brushed DLC showed the lowest current density and its behaviour was better than polished DLC and DLC as-deposited up to a potential of ?0.93 V.

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Section: Resultsmentioning

confidence: 99%

Wear–Corrosion Resistance of DLC/CoCrMo System for Medical Implants with Different Surface Finishing

et al. 2009

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“…An abrupt decrease in potential is observed immediately after initiation of the sliding, indicating a depassivation of the surface induced by the mechanical detachment of the passive film and the exposure of fresh active titanium to the electrolyte [1,32]. The OCP during rubbing results from the galvanic coupling between the depassivated wear track (anode) and the passive unworn area (cathode) [33][34][35].…”

Section: 2electrochemical Measurementsmentioning

confidence: 99%

Tribocorrosion behavior of beta titanium biomedical alloys in phosphate buffer saline solution

Pina

Dalmau

Devesa

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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ElsevierGuiñon Pina, V.; Dalmau, A.; Amigó Borrás, V. (2015). AbstractThe tribo-electrochemical behavior of different  titanium alloys for biomedical applications sintered by powder metallurgy has been investigated. Different mechanical, electrochemical and optical techniques were used to study the influence of the chemical composition, Sn content, and the electrochemical conditions on the tribocorrosion behavior of those alloys Ti30NbxSn alloys (where "x" is the weight percentage of Sn content, 2% and 4%).Sn content increases the active and passive dissolution rate of the titanium alloys, thus increasing the mechanically activated corrosion under tribocorrosion conditions. It also increases the mechanical wear of the alloy. Prevailing electrochemical conditions between -1 and 2 V influences the wear accelerated corrosion by increasing it with the applied potential and slightly increases the mechanical wear of Ti30Nb4Sn.Wear accelerated corrosion can be predicted by existing models as a function of electrochemical and mechanical parameters of the titanium alloys.

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“…Although the maps give some pictures on the tribo-corrosion behaviour, as shown for other studies in the area [31][32][33][34][35][36] it is based on the experimental data, and not at this stage, a mathematical model of the process [37]. Hence, in future there is significant scope to extend the methodology employed in the current study, and employ modelling techniques to verify the data, in order to establish these boundaries theoretically.…”

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confidence: 95%

Tribocorrosion behaviour of TiC O thin films in bio-fluids

Mathew

Ariza

Rocha

et al. 2010

Electrochimica Acta

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This version is available at https://strathprints.strath.ac.uk/18850/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Abstract:In recent years, the development of thin film systems for decorative applications has attracted significant attention in scientific research. These decorative coatings require, not only an attractive appearance for market applications, but also an ability to protect the surface underneath. Because of this, corrosion, wear and their combined effects (termed tribo-corrosion) are particularly important for lifetime prediction.The tribo-corrosion behaviour of a range of single layered titanium oxycarbide, TiC x O y ,coatings, produced by DC reactive magnetron sputtering, has been studied and reported as a function of electrode potential (-0.9 V, -0.5 V, 0.0 V and +0.5 V) and applied load (3, 6 and 9 N). The study was conducted in a reciprocating sliding tribosystem (Plint TE 67/E) in a bio fluid (an artificial perspiration solution) at room temperature. During the wear tests, both the open-circuit potential and the corrosion current were monitored. 2The results showed that electrode potential and load have a significant influence on the total material loss. The variations in R p (polarization resistance) and C f (capacitance) before and after sliding, obtained by Electrochemical Impedance Spectroscopy (EIS)were evaluated in order to provide an understanding of the resistance of the film in such conditions. Tribo-corrosion maps were generated, based on the results, indicating the change in mechanisms of the tribological and corrosion parameters for such coatings.

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Tribocorrosion behaviour of DLC-coated 316L stainless steel

Cited by 122 publications

References 22 publications

Wear–Corrosion Resistance of DLC/CoCrMo System for Medical Implants with Different Surface Finishing

Wear–Corrosion Resistance of DLC/CoCrMo System for Medical Implants with Different Surface Finishing

Tribocorrosion behavior of beta titanium biomedical alloys in phosphate buffer saline solution

Tribocorrosion behaviour of TiC O thin films in bio-fluids

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