Interactions between wear and corrosion on cast and sintered Ti-12Nb alloy in comparison with the commercial Ti-6Al-4V alloy

Çaha, Ihsan; Alves, Alexandra Manuela Vieira Cruz Pinto; Chirico, Caterina; Tsipas, S.A.; Rodrigues, I.R.; Pinto, A. M. P.; Grandini, Carlos Roberto; Rocha, L. A.; Gordo, E.; Toptan, Fatih

doi:10.1016/j.corsci.2020.108925

Cited by 19 publications

(7 citation statements)

References 36 publications

(47 reference statements)

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“…It is possible that darker zones were generated by over-etching, as was proposed by G. Vander Voort [ 46 ]. A matrix characterizes Ti-6Al-4V microstructure with a phase homogeneously distributed, attributed to equiaxial α-Ti and intergranular β-Ti (lighter and darker zones in Figure 2 b), respectively, as reported by Çaha et al [ 47 ] for commercial Ti-6Al-4V, and by Dabrowski [ 48 ] for rolled and annealed Ti-6Al-4V at low cooling rates.…”

Section: Resultsmentioning

confidence: 53%

“…The grooved surface of the CP-Ti sample had a penetration value close to −0.7 μm of depth (see Figure 4 a), while the profile of scratch of the Ti-6Al-4V sample had a penetration value relative to −0.3 μm of depth (see Figure 4 b). This behavior has been attributed to the hardness difference, close to 146 HV 0.5 for CP-Ti [ 43 ] and 350 ± 5 HV 0.5 for Ti-6Al-4V [ 47 ] by solution hardening of Al in Ti-6Al-4V. The phases volume fraction also influences hardness, as was studied by Patil et al [ 55 ], in Ti-6Al-4V with different thermal treatment, where hardness was reduced with an increase of alpha volume fraction.…”

Section: Resultsmentioning

confidence: 97%

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A Tribological and Ion Released Research of Ti-Materials for Medical Devices

et al. 2021

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The increase in longevity worldwide has intensified the use of different types of prostheses for the human body, such as those used in dental work as well as in hip and knee replacements. Currently, Ti-6Al-4V is widely used as a joint implant due to its good mechanical properties and durability. However, studies have revealed that this alloy can release metal ions or particles harmful to human health. The mechanisms are not well understood yet and may involve wear and/or corrosion. Therefore, in this work, commercial pure titanium and a Ti-6Al-4V alloy were investigated before and after being exposed to a simulated biological fluid through tribological tests, surface analysis, and ionic dissolution characterization by ICP-AES. Before exposure, X-ray diffraction and optical microscopy revealed equiaxed α-Ti in both materials and β-Ti in Ti-6Al-4V. Scratch tests exhibited a lower coefficient of friction for Ti-6Al-4V alloy than commercially pure titanium. After exposure, X-ray photoelectron spectroscopy and surface-enhanced Raman spectroscopy results showed an oxide film formed by TiO2, both in commercially pure titanium and in Ti-6Al-4V, and by TiO and Al2O3 associated with the presence of the alloys. Furthermore, inductively coupled plasma atomic emission spectroscopy revealed that aluminum was the main ion released for Ti-6Al-4V, giving negligible values for the other metal ions.

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Section: Resultsmentioning

confidence: 53%

Section: Resultsmentioning

confidence: 97%

A Tribological and Ion Released Research of Ti-Materials for Medical Devices

et al. 2021

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“…The basic data for such a modeling procedure can be obtained by fundamental tribocorrosion studies in the ball-on-disc configuration. The role of mechanical and electrochemical reactions in the total tribocorrosion loss changes with various parameters such as the imposed potential [ 48 , 49 ], normal force (and, thus, contact pressure) [ 50 , 51 ], sliding distance and its frequency [ 52 , 53 , 54 ], material couple in contact [ 55 , 56 , 57 , 58 ], and the solution type and its acidity [ 59 , 60 , 61 ]. However, the design parameters of head–neck junctions including taper angle mismatch, head size, trunnion geometry, material couples in contact, and the solution acidity, together with the presence of proteins, could affect the tribological characteristics of the system, the governing potential, and the degree of mechanical and electrochemical damage processes.…”

Section: Discussionmentioning

confidence: 99%

An Overview of the Stability and Fretting Corrosion of Microgrooved Necks in the Taper Junction of Hip Implants

et al. 2022

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Fretting corrosion at the head–neck interface of modular hip implants, scientifically termed trunnionosis/taperosis, may cause regional inflammation, metallosis, and adverse local tissue reactions. The severity of such a deleterious process depends on various design parameters. In this review, the influence of surface topography (in some cases, called microgrooves/ridges) on the overall performance of the microgrooved head–neck junctions is investigated. The methodologies together with the assumptions and simplifications, as well as the findings from both the experimental observations (retrieval and in vitro) and the numerical approaches used in previous studies, are presented and discussed. The performance of the microgrooved junctions is compared to those with a smooth surface finish in two main categories: stability and integrity; wear, corrosion, and material loss. Existing contradictions and disagreements among the reported results are reported and discussed in order to present a comprehensive picture of the microgrooved junctions. The current research needs and possible future research directions on the microgrooved junctions are also identified and presented.

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“…Through the cyclic actions of these two mechanisms and their interrelations, the material surface in contact is damaged/tribocorroded. The positive/negative synergy between these mechanisms depends on various parameters such as normal force [5][6][7], sliding distance and its frequency [8][9][10][11], electrochemical potential [12,13], solution type and its pH [4,14], and also the material couple in contact [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The Tribocorrosion Behaviour of Ti-6Al-4 V Alloy: The Role of Both Normal Force and Electrochemical Potential

et al. 2022

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The tribocorrosion behaviour of Ti-6Al-4 V exposed to phosphate buffered saline was investigated under a range of normal forces in both cathodic and anodic regions to provide a basis for properly deriving the tribological constants of this alloy. To achieve this, a new customised tribotester was designed and manufactured to rub the Ti-6Al-4 V disks against zirconia balls. The tests were conducted at a sliding frequency of 1 Hz and a sliding distance of 4.8 mm under various normal forces and potentials as 17.5, 10.8, 6, 3.5 N, and − 1.2, − 0.6, 0, 0.4, 0.8 V/VAg/AgCl, respectively. The damaged surfaces were characterised by scanning electron microscopy and energy-dispersive X-ray spectroscopy, profilometer, and micro-hardness tester. The post analyses confirmed the appearance of some minor cracks together with third-body wear particles. No significant changes in the hardness were detected after the tribocorrosion tests. The results of profilometry and electrochemical current indicated that in the anodic region the chemical losses accounted for a significant proportion (up to 36%) of the total loss. The proportional chemical loss increased with the potential; however, neither direct nor reverse relationship was found with the normal force. Overall, in the anodic domain, the material loss increased with the potential level due to the formation of oxide layer which may induce more shear cutting. In the cathodic domain, hydrogen embrittlement changed the properties of the interface and thus, the amount of material loss. Both the mechanical and chemical wear were described by an existing tribocorrosion theory; thereby, the theory was equipped with its tribocorrosive constants for future analyses on the tribocorrosion of this alloy extensively used in various applications including biomedical implants.

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Interactions between wear and corrosion on cast and sintered Ti-12Nb alloy in comparison with the commercial Ti-6Al-4V alloy

Cited by 19 publications

References 36 publications

A Tribological and Ion Released Research of Ti-Materials for Medical Devices

A Tribological and Ion Released Research of Ti-Materials for Medical Devices

An Overview of the Stability and Fretting Corrosion of Microgrooved Necks in the Taper Junction of Hip Implants

The Tribocorrosion Behaviour of Ti-6Al-4 V Alloy: The Role of Both Normal Force and Electrochemical Potential

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