The relevance of cathode kinetics to the interpretation of triboelectrochemical corrosion

Papageorgiou, Nikolaos S.

doi:10.1016/j.triboint.2013.04.007

Cited by 10 publications

(8 citation statements)

References 20 publications

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“…Concerning the analysis of figures 8 and 9, one can conclude that etched titanium samples fall into the first category, while the MAO treated samples belong to the latter case. Papageorgiou Furthermore, the previous works by Vieira et al [55], Papageorgiou [56] or Espallargas et al previously demonstrated in some works, [58,59] and more recently applied to this same purpose. [43,44] The wear mechanisms on titanium oxides obtained by electrochemical methods were already…”

Section: Tribocorrosion Mechanisms In Mao Treated Surfacesmentioning

confidence: 91%

“…According to recent works [55,56], the analysis of these plots, and particularly the cathodic domains, can help on the interpretation of tribo-electrochemical results. It is known that the decrease of OCP during a tribocorrosion test is due to a galvanic coupling, established between the wear track (anodic) and the surrounding non-worn zone (cathodic area).…”

Section: Tribocorrosion Mechanisms In Mao Treated Surfacesmentioning

confidence: 99%

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Understanding growth mechanisms and tribocorrosion behaviour of porous TiO2 anodic films containing calcium, phosphorous and magnesium

Oliveira¹,

Ribeiro²,

Pérez³

et al. 2015

Applied Surface Science

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The growth of the dental implant market increases the concern regarding the quality, efficiency, and lifetime of dental implants. Titanium and its alloys are dominant materials in this field thanks to their high biocompatibility and corrosion resistance, but they possess a very low wear resistance. Besides problems related to osteointegration and bacterial infections, tribocorrosion phenomena being the simultaneous action between corrosion and wear, are likely to occur during the lifetime of the implant. Therefore, tribocorrosion resistant surfaces are needed to guarantee the preservation of dental implants. This work focused on the incorporation of magnesium, together with calcium and phosphorous, in the structure of titanium oxide films produced by micro-arc oxidation (MAO). The characterization of morphology, chemical composition, and crystalline structure of the surfaces provided important insights leading to 1) a better understanding of the oxide film growth mechanisms during the MAO treatment; and 2) a better awareness on the degradation process during tribocorrosion tests. The addition of magnesium was shown to support the formation of rutile which improves the tribocorrosion properties of the surfaces.

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Section: Tribocorrosion Mechanisms In Mao Treated Surfacesmentioning

confidence: 91%

Section: Tribocorrosion Mechanisms In Mao Treated Surfacesmentioning

confidence: 99%

Understanding growth mechanisms and tribocorrosion behaviour of porous TiO2 anodic films containing calcium, phosphorous and magnesium

Oliveira¹,

Ribeiro²,

Pérez³

et al. 2015

Applied Surface Science

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“…Recently, significant work has been undertaken to experimentally study passive oxide film disruption due to fretting and to understand the corrosion response of surfaces to these events (Bryant & Neville, 2017; Maldonado, Mischler, Cantoni, Chitty, & Falcand, 2013; Oladokun et al, 2015; Papageorgiou, 2013; Swaminathan & Gilbert, 2012; Swaminathan & Gilbert, 2013). These efforts, however, have yet to fully elucidate the links between surface abrasion mechanics, fretting current response and the changes in electrode potential that occur over time during abrasion or immediately after abrasion.…”

Section: Introductionmentioning

confidence: 99%

“…Efforts by Jemmely, Mischler, and Landholt (2000), Jiang, Stack, and Neville (2002), Landholt and Mischler Stemp (2001), Papageorgiou (2013), and Papageorgiou and Mischler (2012) have provided some of the underpinnings of tribocorrosion processes to model current and potential changes. These works, while providing insights, do not account for all of the elements of the behavior of the system that are important to the overall response.…”

Section: Introductionmentioning

confidence: 99%

A metallic biomaterial tribocorrosion model linking fretting mechanics, currents, and potentials: Model development and experimental comparison

Gilbert

Zhu

2020

J Biomed Mater Res

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Mechanically assisted crevice corrosion may disrupt passive oxide films on medical alloys and lead to rapid repassivation reactions which generate corrosion currents and shifts in electrode potential due to the non-equilibrium nature of the reactions and the transient unbalancing of anodic and cathodic reactions. This study presents a theoretical approach to predict currents and voltages over time utilizing the concepts of heredity integrals, area-dependent surface impedance, contact mechanics and the high field physics of oxide repassivation. Two heredity integrals are presented relating, first, the sliding mechanics and oxide film repassivation physics to the current, and second, relating the electrode potential to the current using impedance concepts. Current-potential-time responses to controlled fretting conditions were measured across a fretting frequency from 0.2 to 10 Hz and compared to theoretical results. The coupled integrals were shown to predict the overall current-potential-time behavior for CoCrMo alloy surfaces under several controlled fretting corrosion conditions (loads, sliding speeds, etc.) with a high degree of similarity. These models can be adapted to numerical analyses of tribocorrosion to predict performance.

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“…Tribocorrosion is a well known study which is usually carried out to understand the conjoint action of electrochemical and mechanical aspects, where both the worn (wear track) and unworn surfaces are exposed to the electrolyte obtaining an average behavior. 6 However, the wear process changes the real area because of roughening.…”

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confidence: 99%

Communication—Local Electrochemical Study Using Droplet Cell Microscopy on a Rough Surface

Rajan

Neelakantan

2016

J. Electrochem. Soc.

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Conventional electrochemical measurements have been carried out using droplet cell microscopy for local area studies. This study overcomes the limitation of knowing accurately the exposed area and is proved by investigating the rough surface induced by wear. The galvanostatic pulse technique is used to determine the time constant which is independent of the area and also gives an indication of the corrosion rate. Worn and unworn surfaces of AA2014 in 0.1 M NaCl solution have been compared and the potential decay was faster for a worn surface than an unworn surface.

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The relevance of cathode kinetics to the interpretation of triboelectrochemical corrosion

Cited by 10 publications

References 20 publications

Understanding growth mechanisms and tribocorrosion behaviour of porous TiO2 anodic films containing calcium, phosphorous and magnesium

Understanding growth mechanisms and tribocorrosion behaviour of porous TiO2 anodic films containing calcium, phosphorous and magnesium

A metallic biomaterial tribocorrosion model linking fretting mechanics, currents, and potentials: Model development and experimental comparison

Communication—Local Electrochemical Study Using Droplet Cell Microscopy on a Rough Surface

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