Effects of fluorides on titanium and other dental alloys in dentistry

Reclaru, Lucien; Meyer, Jean‐Marc

doi:10.1016/s0142-9612(97)00179-8

Cited by 202 publications

(148 citation statements)

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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%

“…The same behavior was observed for Ti (data not shown). According to the literature 13,16 , TiO 2 dissolves in HF with [TiF 6 ] 2-ion formation at potentials close to -1.0 V. The voltammetric curves obtained for Ti and Ti6Al4V in citric acid, between -1.0 and 4.0 V, at 0.02 Vs -1 (Figure 2), reveal a passive behavior as well as a region with a practically constant current, indicating the film's growth. This behavior indicates that the thickness of the anodic oxide film increased linearly with the applied potential 17,18 .…”

Section: Methodsmentioning

confidence: 65%

“…Frateur et al 12 observed some pitting on Ti in acidic fluoride media (pH 2.0 and 3.0). 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%

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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%

Section: Methodsmentioning

confidence: 65%

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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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“…29 The fluoride ion has a slow negative influence on the electrochemical parameters due its higher corrosivity. 24,30,31 In comparison with Ti-6Al-4V alloy, from Table 4 it resulted more favorable values of all electrochemical parameters for Ti-6Al-4V-1Zr alloy, revealing the beneficial effect of Zr.…”

Section: Improvement Of Corrosion Resistance From Polarization Curvesmentioning

confidence: 91%

“…In the presence of fluoride ions, open circuit potential changed to more electronegative values due to the negative effect of F -ion; 24,30,35 the same tendency to stabilize and to ennoble was registered, showing a good, resistant passive layer.…”

Section: Improvement Of Corrosion Resistance From In Time Variations mentioning

confidence: 91%

Corrosion resistance improvement of titanium base alloys

Popa¹,

Vasilescu²,

Drob³

et al. 2010

Quím. Nova

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Recebido em 4/2/10; aceito em 2/6/10; publicado na web em 24/8/10The corrosion resistance of the new Ti-6Al-4V-1Zr alloy in comparison with ternary Ti-6Al-4V alloy in Ringer-Brown solution and artificial Carter-Brugirard saliva of different pH values was studied. In Ringer-Brown solution, the new alloy presented an improvement of all electrochemical parameters due to the alloying with Zr; also, impedance spectra revealed better protective properties of its passive layer. In Carter-Brugirard artificial saliva, an increase of the passive film thickness was proved. Fluoride ions had a slight negative influence on the corrosion and ion release rates, without to affect the very good stability of the new Ti-6Al-4V-1Zr alloy.

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