Synergistic effect of fretting wear and sliding wear of Co-alloy and Ti-alloy in Hanks’ solution

Iwabuchi, Akira; Lee, J.W.; Uchidate, Michimasa

doi:10.1016/j.wear.2007.01.102

Cited by 96 publications

(50 citation statements)

References 14 publications

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“…Compared to corrosiononly PD scan, the E corr of Ti-V alloy during tribocorrosion is slightly higher (-0.8 vs. -0.6 V. Upon initiation of sliding, the current increased drastically (cathodic shift) and reached a fluctuating range of 1 and 100 lA as the passive layer was repeatedly formed and destroyed during sliding. This range of current, also known as passivation current (I PASS ), is similar to those reported in the literature [1,43,44,[52][53][54]. The fluctuating current can be explained as follows.…”

Section: Electrochemical Analysissupporting

confidence: 86%

“…5b shows a tribocorrosion PD scan of a Ti-V sample in AS of pH = 6.5. The observed E corr (corrosion potential), which indicates the readiness of a material to corrode, is similar to values reported for Ti-V alloy in literature in the range of -0.5 to -1.0 V [1,44,[51][52][53][54]. Compared to corrosiononly PD scan, the E corr of Ti-V alloy during tribocorrosion is slightly higher (-0.8 vs. -0.6 V. Upon initiation of sliding, the current increased drastically (cathodic shift) and reached a fluctuating range of 1 and 100 lA as the passive layer was repeatedly formed and destroyed during sliding.…”

Section: Electrochemical Analysissupporting

confidence: 85%

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Design, Development, and Testing of a Compact Tribocorrosion Apparatus for Biomedical Applications

et al. 2014

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Orthopedic and dental implants experience the synergistic effect of wear and corrosion, i.e., tribocorrosion, which has been a major contributor to the premature failure of implants. This work focuses on the development of a compact and cost-effective tribocorrosion apparatus for the investigation of fretting and wear. The custom-built apparatus is validated with an analysis of the tribocorrosion behavior of Ti6Al-4V disks in artificial saliva (pH = 6.5, T = 37°C). Electrochemical impedance spectroscopy, potentiodynamic, free potential, and potentiostatic analyses were used for electrochemical characterization of Ti-6Al-4V disks. White light interferometry and scanning electron microscopy were used to analyze wear scars on the Ti-6Al-4V disks. Total wear loss was calculated to be 12.4 ± 1.5 lg, and the synergistic weight loss ratio (0.78 ± 0.1) showed that Ti-6Al-4V disks experience synergy of wear and corrosion, with wear being the dominant component.

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Section: Electrochemical Analysissupporting

confidence: 86%

Section: Electrochemical Analysissupporting

confidence: 85%

Design, Development, and Testing of a Compact Tribocorrosion Apparatus for Biomedical Applications

et al. 2014

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“…These in turn depend on a variety of experimental parameters including material's composition and structure, strain state, temperature, chemical composition of the environment, mass transport conditions, contact with other materials, yFor these reasons, it is very difficult to predict open circuit potentials and although its measurement is relatively easy for in-vitro tests, there is only one reported in-vivo value by Steinmann [87] of 0.2 V SHE . The open circuit potentials measured in vitro [68,75,88,89], in a variety of environments (bovine serum, sodium chloride and phosphate solution with and without proteins) are in the range À 0.5 V SHE to 0.2 V SHE , i.e., close to or within the transition potential range in Fig. 4.…”

Section: Electrode Potential Of Cocrmo Contactsmentioning

confidence: 89%

“…Indeed, authors testing tribocorrosion of CoCrMo alloys in simulated body fluids [22,68,75,88] found that the onset of rubbing corresponds to a significant (typically between 0.10 and 0.35 V depending on solution and load) cathodic shift of overall electrode potential. Fig.…”

Section: Electrode Potential Of Cocrmo Contactsmentioning

confidence: 99%

Wear of CoCrMo alloys used in metal-on-metal hip joints: A tribocorrosion appraisal

Mischler

Muñoz

2013

Wear

174

116

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a b s t r a c tA good biocompatibility, excellent mechanical properties and high corrosion resistance characterize CoCrMo alloys. Therefore they are widely used for artificial joints in biomedical implants. However, the degradation of the implants during service life leads to the release into the body of toxic ions and wear particles. This continuous degradation is of concern for long-term stability of the implants. Published literature has highlighted the relevance of lubrication as well as metallurgical and contact mechanical factors on the degradation of CoCrMo implant alloys. Recent experimental investigations have proposed tribocorrosion, i.e., the interplay of mechanical wear and corrosion by the body fluids, as one of the crucial degradation mechanism of implants. Tribocorrosion is sub-discipline of tribology and corrosion that recently made significant progresses in mechanistic understanding and modelling. The present work aims at evaluating published results on the degradation of CoCrMo alloys using existing tribocorrosion concepts. Results show that wear accelerated corrosion due to mechanical removal of the passive film during sliding is a major contribution to the overall degradation. Further, a transition from low (10 À 6 N/mm 3 m) to high (10 À 4 N/mm 3 m) wear coefficients was found at a threshold electrode potential close to 0.2 V SHE These findings clearly show that electrochemical phenomena play a key role on the tribological behaviour of biomedical CoCrMo alloy implants.

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“…The second step, the production of OH − , does not easily occur in pure water because of the extremely low electrical conductivity of pure water (≤ 0.09 mS/m which is less than (1/300) th of that in quasi-tap water) [17]. Once the remaining aluminum is oxidized and embedded as hard particles on the brass surface, it will be difficult to remove these and will continue abrading the DLC surface.…”

Section: Almentioning

confidence: 99%

Effects of water environment on tribological properties of DLC rubbed against brass

Uchidate¹,

Li²,

Iwabuchi³

et al. 2009

Wear

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The effects of the water environment, such as temperature, dissolved ions, dissolved oxygen etc., on the tribological properties of diamond-like carbon (DLC) against brass were studied as part of the development of water-lubricated hydraulics, valves and cylinders based on metals (Fe alloys, Cu alloys etc.). A ball-on-disk type tribotester was used to examine the above various factors. DLC was deposited on stainless steel disks using an unbalanced magnetron sputtering system. Pure water and quasi-tap water, which imitates typical tap water sampled in Tokyo, were used to study the effects of dissolved ions. The water temperature was elevated from 20°C to 80°C. The results show that temperature as well as the dissolved ions have a major impact on friction and wear. More specifically, the coefficient of friction was increased at elevated temperatures. Also, in pure water, abrasive wear of DLC was observed due to aluminum condensation on the brass surface, whereas it was prevented in quasi-tap water since aluminum was removed from the contact region due to the dissolved ions. EPMA, XPS and AES indicated Page 2 of 28 A c c e p t e d M a n u s c r i p t that the tribo-layer on the metal surfaces, which consists of carbon and the base metal as well as some elements from water, plays an important role.

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Synergistic effect of fretting wear and sliding wear of Co-alloy and Ti-alloy in Hanks’ solution

Cited by 96 publications

References 14 publications

Design, Development, and Testing of a Compact Tribocorrosion Apparatus for Biomedical Applications

Design, Development, and Testing of a Compact Tribocorrosion Apparatus for Biomedical Applications

Wear of CoCrMo alloys used in metal-on-metal hip joints: A tribocorrosion appraisal

Effects of water environment on tribological properties of DLC rubbed against brass

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