Effect of replacement of V by Fe and Nb on passive film behavior of Ti–6Al–4V in simulated body fluid conditions

Shukla, A.K.; Balasubramaniam, R.; Bhargava, S.

doi:10.1016/j.jallcom.2004.08.005

Cited by 36 publications

(10 citation statements)

References 16 publications

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“…In the medium and low frequency ranges, the Bode-phase plots exhibit a plateau with angles close to -80 o , whereas the values of the impedance modulus varied linearly with the frequency presenting slopes close to -0.9. These features are characteristic of passive films presenting a highly capacitive behaviour [40,48,49]. This capacitive behaviour extends over a wider frequency range as the alloys are exposed to the test electrolyte for longer exposures, confirming the improvement of the barrier characteristics of the passive film formed on the Ti-Nb-Mo alloys in this electrolytic environment.…”

Section: Figuresupporting

confidence: 54%

Metastable beta Ti-Nb-Mo alloys with improved corrosion resistance in saline solution

Chelariu

Bolat

Izquierdo

et al. 2014

Electrochimica Acta

105

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Section: Figuresupporting

confidence: 54%

Metastable beta Ti-Nb-Mo alloys with improved corrosion resistance in saline solution

Chelariu

Bolat

Izquierdo

et al. 2014

Electrochimica Acta

105

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“…In addition, the risk of developing Alzheimer's disease may enhance with aluminum [9][10][11]. Replacing vanadium (V) by non-toxic elements such as niobium (Nb) and iron (Fe) in Ti-6Al-4Fe and Ti-6Al-4Nb resulted in improved corrosion resistance [12]. Some features of newly developed β-type titanium alloys have been reported in several studies including better mechanical strength, greater biocompatibility, low stiffness, and non-allergic characteristic in comparison with conventional Ti alloys [13].…”

Section: Introductionmentioning

confidence: 99%

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

2019

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The need for metallic biomaterials will always remain high with their growing demand in joint replacement in the aging population. This creates need for the market and researchers to focus on the development and advancement of the biometals. Desirable characteristics such as excellent biocompatibility, high strength, comparable elastic modulus with bones, good corrosion resistance, and high wear resistance are the significant issues to address for medical implants, particularly load-bearing orthopedic implants. The widespread use of titanium alloys in biomedical implants create a big demand to identify and assess the behavior and performance of these alloys when used in the human body. Being the most commonly used metal alloy in the fabrication of medical implants, mainly because of its good biocompatibility and corrosion resistance together with its high strength to weight ratio, the tribological behavior of these alloys have always been an important subject for study. Titanium alloys with improved wear resistance will of course enhance the longevity of implants in the body. In this paper, tribological performance of titanium alloys (medical grades) is reviewed. Various methods of surface modifications employed for titanium alloys are also discussed in the context of wear behavior.

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“…Electrochemical impedance spectroscopy (EIS) has been used in a number of studies to examine the passive film behavior of Ti and some of its alloys in simulated physiological solutions 4–10. Impedance data are typically analyzed in terms of equivalent circuit models, but such an analysis was performed in only a few of these studies 5, 6, 9.…”

Section: Introductionmentioning

confidence: 99%

The electrochemical behavior of nitinol in simulated physiological solutions

Pound

2007

J Biomedical Materials Res

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The electrochemical behavior of nitinol in simulated human bile and phosphate-buffered saline (PBS) was examined using electrochemical impedance spectroscopy. In addition, cyclic potentiodynamic polarization tests were performed in the simulated bile and salt-only bile, and the results compared with those obtained previously in PBS. The potentiodynamic tests showed that electropolishing was effective in providing nitinol with a high resistance to pitting corrosion in the bile solutions, as found in PBS. Differences between the breakdown potential and the corrosion potential indicated that mechanically polished nitinol should be more susceptible to pitting corrosion in simulated bile than in the salt-only bile and PBS. The impedance spectra showed near-capacitive behavior in both PBS and simulated bile, and the data could be fitted by a parallel resistance-capacitance (as a constant phase element) circuit associated with the passive oxide film. The thickness of the oxide was determined from the capacitive component and found to be consistent with surface analytical results reported in the literature. Resistivities obtained from resistance values indicated that compositional features of the oxide were similar for PBS and simulated bile.

show abstract

Effect of replacement of V by Fe and Nb on passive film behavior of Ti–6Al–4V in simulated body fluid conditions

Cited by 36 publications

References 16 publications

Metastable beta Ti-Nb-Mo alloys with improved corrosion resistance in saline solution

Metastable beta Ti-Nb-Mo alloys with improved corrosion resistance in saline solution

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

The electrochemical behavior of nitinol in simulated physiological solutions

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