A study of the potentials achieved during mechanical abrasion and the repassivation rate of titanium and Ti6Al4V in inorganic buffer solutions and bovine serum

Contu, F.; Elsener, Bernhard; Böhni, H.

doi:10.1016/j.electacta.2004.07.024

Cited by 72 publications

(53 citation statements)

References 13 publications

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“…[6][7][8][9] The potentials in vivo are expected to vary anywhere from À1 V to 0.5 V (vs. SCE). Accumulation of electrons shifts the potential cathodically until the rate of reduction roughly balances with the rate of anodic reactions (oxide repassivation and ion release).…”

Section: Introductionmentioning

confidence: 99%

Potential and frequency effects on fretting corrosion of Ti6Al4V and CoCrMo surfaces

Swaminathan

Gilbert

2013

J Biomedical Materials Res

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Fretting corrosion has been reported at the metal-metal interfaces of a wide range of medical devices, including total joint replacements, spinal devices, and overlapping cardiovascular stents. Currently, the fretting corrosion phenomenon associated with metal-on-metal contacts is not fully understood. This study investigated the effect of potential and fretting frequency on the fretting corrosion performance of Ti6Al4V/Ti6Al4V, Ti6Al4V/CoCrMo, and CoCrMo/CoCrMo alloy combinations at fixed normal load and displacement conditions using a custom built fretting corrosion test system. The results showed that the fretting current densities increased with increases in potential and were highest for Ti6Al4V/Ti6Al4V couple (1.5 mA/cm(2) at 0 V vs. Ag/AgCl). The coefficient of friction varied with potential and was about two times higher for Ti6Al4V/Ti6Al4V (0.71 V at 0 V vs. Ag/AgCl). In most of the potential range tested, the fretting corrosion behavior of CoCrMo/Ti6Al4V and CoCrMo/CoCrMo was similar and dominated by the CoCrMo surface. Increase in applied fretting frequency linearly increased the fretting current densities in the regions where the passive film is stable. Also, the model-based fretting current densities were in excellent agreement with the experimental results. Overall, Ti6Al4V/Ti6Al4V couple was more susceptible to fretting corrosion compared with other couples. However, the effects of these processes on the biological system were not assessed.

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Section: Introductionmentioning

confidence: 99%

Potential and frequency effects on fretting corrosion of Ti6Al4V and CoCrMo surfaces

Swaminathan

Gilbert

2013

J Biomedical Materials Res

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“…This release of ion and metal debris has been associated with cytotoxicity, inhibition of cell differentiation, phagocytosis of Ti particles by macrophages, inflammation, and neoplastic changes [47][48][49]. In addition, the fretting associated cathodic shift in the open circuit potential of cpTi implants [50][51][52][53] alters the electrochemical properties of the cpTi interface [54,55] and has been associated with reduced biocompatibility [51,56-58]. …”

Section: Titanium Corrosionmentioning

confidence: 99%

Biomaterial properties of titanium in dentistry

Prasad

Ehrensberger

Gibson

et al. 2015

Journal of Oral Biosciences

114

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a b s t r a c tBackground: Amon Q2 g various dental materials and their successful restorative uses, titanium provides an excellent example of integrating science and technology involving multiple disciplines of dentistry including biomaterials, prosthodontics and surgical sciences. Titanium and its alloys have emerged as a material of choice for dental implants fulfilling all requirements biologically, chemically and mechanically. Several excellent reviews have discussed the properties of titanium and its surface characteristics that render it biocompatible. However, in most patients, titanium implants are used alongside several other metals. Presence of different metals in the same oral environment can alter the properties of titanium. Other influencing factors include intra-oral pH, salivary content, and effect of fluorides. Highlight: This review discusses the effect of the above-mentioned conditions on the properties of titanium and its alloys. An extensive literature search encompassing the properties of titanium in an altered oral environment and its interaction with other restorative materials is presented. Specific conditions that could cause titanium to corrode, specifically due to interaction with other dental materials used in oral rehabilitation, as well as methods that can be employed for passivation of titanium are discussed. Conclusion: This review presents an overview of the properties of titanium that are vital for its use in implant dentistry. From a restorative perspective, interaction between implant restoration metals, intraoral fluorides and pH may cause titanium to corrode. Therefore, in order to avoid the resulting deleterious effects, an understanding of these interactions is important for long-term prognosis of implant restorations.

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“…Indeed the biological environment (presence of proteins) affects greatly both the rate and the mechanism of corrosion and wear. In both fields of corrosion [6][7][8][9][10] and tribocorrosion [11][12][13][14][15] tens of papers have been published but the results reported are sometimes contradictory. Some publications suggest that material removal is increased in presence of proteins [6][7] but many others argue that the opposite occurs [8][9][10][11]15].…”

Section: Introductionmentioning

confidence: 98%

Comparative study of corrosion and tribocorrosion resistance of some biomaterials

et al. 2012

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Corrosion and tribocorrosion tests have been conducted on titanium, Ti-6Al-4V and Ti10Zr-10Nb-5Ta alloys. The experiments have been conducted in four different electrolytes: NaCl solution, Ringer's solution, phosphate buffered saline solution (PBS) with and without an addition of bovine serum albumin (BSA).The electrochemical study showed that, whatever the electrolyte, the passivating film formed on Ti-10Zr-10Nb-5Ta surface is more stable than those obtained on the surface of titanium or Ti-6Al-4V alloy. In addition, Ti-10Zr-10Nb-5Ta presents a better resistance to corrosion. In PBS solution, open circuit potential (OCP) moved to more positive value in comparison with results obtained in NaCl and Ringer's solutions, whereas addition of BSA moved OCP value towards more negative potential indicating a detrimental effect.Tribocorrosion tests have been conducted at OCP when sliding against an alumina ball. Friction coefficient, current and volume of material removal at the end of tests have been measured and the results discussed. The influence of the presence of proteins molecules has been particularly analyzed.

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A study of the potentials achieved during mechanical abrasion and the repassivation rate of titanium and Ti6Al4V in inorganic buffer solutions and bovine serum

Cited by 72 publications

References 13 publications

Potential and frequency effects on fretting corrosion of Ti6Al4V and CoCrMo surfaces

Potential and frequency effects on fretting corrosion of Ti6Al4V and CoCrMo surfaces

Biomaterial properties of titanium in dentistry

Comparative study of corrosion and tribocorrosion resistance of some biomaterials

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