Influence of fluoride content and pH on the corrosion resistance of titanium and its alloys

Schiff, Nicolas; Grosgogeat, Brigitte; Lissac, M.; Dalard, F.

doi:10.1016/s0142-9612(01)00328-3

Cited by 335 publications

(269 citation statements)

References 25 publications

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“…The Ti6Al4V presented the same behavior under the same conditions. Similar polarization curves have been reported for Ti and its alloys in fluoride containing artificial saliva with pH < 4.0 13,14,21 .…”

Section: Methodssupporting

confidence: 84%

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Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides

Schmidt

Azambuja

2006

Mat. Res.

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This paper reports on an investigation of the electrochemical behavior of Ti grade 2 and Ti6Al4V alloy in aqueous citric acid solutions with pH 2.0 containing halide ions. Voltammetric studies of Ti and the alloy in citric acid, with and without chloride ions, indicate that the Ti and Ti alloy presented a passive behavior in the test solutions used. Pitting was observed at 3.0 and 2.5 V/SCE for Ti and Ti6Al4V, respectively, when bromide ions were added to the solution. In solutions containing fluoride ions, dissolution of the film occurred at potentials close to -1.0 V/SCE in both electrodes. The iodide ions oxidized on the passive oxide film at potentials close to 1.0 V/SCE. EIS results of the materials in citric acid solutions containing chloride ions revealed that the film's resistance increased as the applied potential rose from 0 to 1.0 V. In bromide-containing solutions, breakdown of the film was confirmed at potentials above 2.0 V/SCE in both electrodes. These results suggest film reformation for Ti and the alloy in solutions containing fluoride at potentials within the passive region.

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Section: Methodssupporting

confidence: 84%

“…Reclaru and Meyer 13 showed that crevice corrosion and pitting occur on Ti alloys in a fluoride containing NaCl solution with pH below 3.5. Furthermore, Schiff 14 found pitting of Ti6Al4V alloy in fluoridated acidified saliva (pH 2.5).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides

Schmidt

Azambuja

2006

Mat. Res.

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“…Kedici et al [21] reported a corrosion potential of -425mV/SCE, while Schiff et al [22] found a stable value of +50mV/SCE under similar conditions. In this work, the measured corrosion potential for non-coated Ti (-225mV/SCE) was higher than the value reported by Kedici et al and lower than that reported by Schiff et al However, differences in the composition of the artificial saliva solution must be considered.…”

Section: Resultsmentioning

confidence: 96%

Corrosion behavior of pure titanium in artificial saliva solution

et al. 2009

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The biocompatibility of commercially pure (cp) titanium stems from its chemical stability within an organism, due to a fine film of impermeable titanium oxide covering the metal surface, which guarantees its resistance to corrosion. Despite its biocompatible characteristic, this material does not promote the formation of a hydroxyapatite layer, therefore, many research groups have sought to alter the material's surface, introducing modifications that might influence corrosion resistance. The electrochemical behavior of cp Ti, with hydroxyapatite coating and without hydroxyapatite coating, commonly used in implant materials, was investigated using an artificial saliva solution at 25 o C and pH=7.4. In the conditions of the study it was observed that the hydroxyapatite layer influences the properties of corrosion resistance. This study of the behavior of cp Ti with and without hydroxyapatite coating, in naturally aerated artificial saliva solution at 25 o C, was based on open circuit potential measurements and potentiodynamic polarization curves. At approximately 1x10 -6 A/cm 2 the potential for cp Ti with and without hydroxyapatite coating begins to increase at a faster rate, but at -74mV (SCE) for coated cp Ti and at 180mV (SCE) for uncoated cp Ti the increase in potential begins to slow. This behavior, characterized by a partial stabilization of current density, indicates that in those potential ranges a protective passive film is formed.

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“…Three types of solutions were used: Ringer physiological, Hank solution, and synthetic sweat. Preparation of 1 L of each of the solutions in which the electrodes were immersed was as follows: Hank's solution (pH 7.4) NaCl 8.0 g/L; KCl 0.4 g/L; KH 2 PO 4 0.6 g/L; CaCl 2 0.14 g/L; MgCl 2 Á6H 2 O 0.1 g/L; NaHCO 3 0.35 g/L; NaH 2 PO 4 Á2H 2 O 0.06 g/L; MgSO 4 Á7H 2 O 0.06 g/L; and D-glucose 1.0 g/L [19]. Ringer physiological solution, NaCl 8.60 g/L; KCl 0.3 g/L; and CaCl 2 Á2H 2 O 0.33 g/L, pH 7.4.…”

Section: Methodsmentioning

confidence: 99%

“…2 [30]. It was suggested that the presence of CuCl 2 -at the metal surface leads to a hydrolysis reaction and the formation of Cu 2 O [19]. In the ternary, Al-containing alloys an additional passivation process is taking place in neutral solutions in which a layer of Al-oxide is formed as a result of the surface dissolution of Al [30,31] according to:…”

Section: Cyclic Polarization Measurementsmentioning

confidence: 99%

Electrochemical Stability of Cu–10Al–10Zn, Cu–10Al–10Ni, and Cu–10Ni–10Zn Ternary Alloys in Simulated Physiological Solutions

Nady

El-Rabiei

2016

J Bio Tribo Corros

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Copper-based alloys are widely used in the consumer electronics industry for components such as connector contacts, shielding gaskets, and terminals. Nickel silver is a general term for alloys that contain copper, nickel, and zinc. Nickel silver first became popular as a base metal for silver-plated cutlery and other silverware, notably electro-plated nickel silver, jewelery and coins. In this article, the electrochemical stability of Cu10Ni-10Zn alloy was compared with that of pure copper and two of copper ternary alloys, namely Cu-10Al-10Zn and Cu-10Al-10Ni in synthetic sweat solution, Hank's solution and in Ringer physiological solution. Corrosion behavior of the different electrodes was investigated using cyclic voltammetry, potentiodynamic polarization, and impedance spectroscopy techniques. The CVs showed peaks concerning the redox reactions for copper. These peaks were assigned to the formation and reduction of copper species. Furthermore, they showed that the copper oxidation was suppressed to a large extent by the presence of Ni and zinc in the alloy composition than the presence of Al and Zn or the presence of Al and Ni elements. Also, the results showed that the Cu-10Ni-10Zn alloy exhibited good corrosion resistance due to the formation of a protective passive film. The electrochemical impedance spectroscopy results indicated that either a duplex film with an inner barrier layer and an outer porous layer or a single passive layer was formed on the surface. The formation of such passive film was discussed, and the different alloy surfaces examined by scanning electron microscopy and subjected to EDAX analysis. The surface analysis has shown the participation of the different alloying elements in the passive film according to the alloy constituents.Graphical Abstract Addition of Ni decreases the rate of corrosion of the Cu, and the Cu-10Ni-10Zn was found to be the most corrosion-resistant alloy.

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Influence of fluoride content and pH on the corrosion resistance of titanium and its alloys

Cited by 335 publications

References 25 publications

Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides

Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides

Corrosion behavior of pure titanium in artificial saliva solution

Electrochemical Stability of Cu–10Al–10Zn, Cu–10Al–10Ni, and Cu–10Ni–10Zn Ternary Alloys in Simulated Physiological Solutions

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