Corrosion Behavior of Pure Titanium and Titanium Alloys in Fluoride-containing Solutions.

Nakagawa, Masaharu; Matsuya, Shigeki; Udoh, K.

doi:10.4012/dmj.20.305

Cited by 154 publications

(114 citation statements)

References 6 publications

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“…In fluoride solutions, however, the breakdown of the oxide film has been reported in several articles. [1][2][3][4][5][6][7][8][9][10][11][12][13] According to these results, the corrosion resistance of titanium is reduced markedly in acid fluoride solutions, whereas it remains unchanged in neutral fluoride solutions. Fluorides such as NaF, Na 2 PO 3 F, and SnF 2 are added in toothpaste, prophylactic agents, and dental rinse, and exert a cariostatic effect.…”

Section: Introductionmentioning

confidence: 62%

“…Previously, the effects of fluoride solutions on the fracture of titanium and its alloys have been investigated from the viewpoint of corrosion or discoloration. [1][2][3][4][5][6][7][8][9][10][11][12][13] The corrosion behavior of titanium depends on an oxide film on its surface composed of mainly TiO 2 , which spontaneously covers the surface in the presence of oxygen. In acid fluoride solutions, the oxide film undergoes a reaction, forming titanium fluoride, titanium oxide fluoride, or sodium titanium fluoride, 7,12 and the loss of the oxide film leads to the reduction of the corrosion resistance of titanium in fluoride solutions.…”

Section: Discussionmentioning

confidence: 99%

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Fracture associated with hydrogen absorption of sustained tensile‐loaded titanium in acid and neutral fluoride solutions

Yokoyama

Kaneko

Miyamoto

et al. 2003

J Biomedical Materials Res

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Abstract:The fracture of commercial pure titanium in acid and neutral fluoride solutions has been examined by a sustained tensile-loading test and hydrogen thermal desorption analysis. It was found that the fracture of titanium occurred in neutral 2.0% NaF solution as well as in 2.0% acidulated phosphate fluoride (APF) solution. The time to fracture decreased with increasing applied stress in both 2.0% APF and 2.0% NaF solutions. In the case of the same applied stress, the time to fracture in the 2.0% APF solution was shorter than that in the 2.0% NaF solution. General corrosion was exhibited on the side surface of the tested specimens. The formation of sodium titanium fluoride was observed on the surface of the immersed specimens in the 2.0% APF solution. Hydrogen desorption of the tested specimen in the 2.0% APF solution was observed with a peak at approximately 600°C. The amount of absorbed hydrogen was Ͼ300 mass ppm in the 2.0% APF solution under an applied stress for 24 h. The results of the present study imply that applying stress to titanium by immersing in fluoride solutions leads to the degradation of its mechanical properties.

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Section: Introductionmentioning

confidence: 62%

Section: Discussionmentioning

confidence: 99%

Fracture associated with hydrogen absorption of sustained tensile‐loaded titanium in acid and neutral fluoride solutions

Yokoyama

Kaneko

Miyamoto

et al. 2003

J Biomedical Materials Res

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show abstract

“…It was found that corrosion resistance depends on fluoride concentration, pH, and amount of dissolved oxygen8, [10][11][12][13][14][15]. However, a few researches reported that titanium alloys have a high resistance to corrosion caused by fluoride.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior and Surface Characterization of Ti-20Cr Alloy in a Solution Containing Fluoride

Takemoto

Hattori

Yoshinari

et al. 2004

Dental Materials Journal

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The purpose of this study was to investigate the correlation between corrosion resistance and surface composition of an experimental Cr casting alloy in a saline solution containing fluoride. The alloy had a greater resistance to corrosion in a fluoride-containing saline solution than did commercially pure titanium. However, with confirmed dissolution of titanium and chromium, it meant that the fluoride in the saline solution corroded the alloy slightly.X-ray photoelectron spectroscopy analysis revealed that the surface composition of the alloy consisted of titanium and chromium oxides containing hydroxide.Theratio in the surface oxide film decreased when immersed in fluoride-containing saline solution, that is, the surface oxide film became chromium-rich oxide. Therefore, the alloy obtained good corrosion resistance to fluoride due to formation of a chromium-rich oxide film.

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“…Fluoride has been reported to compromise the passive film in an oral environment [8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Corrosion mechanism of Ti–Cr alloys in solution containing fluoride

et al. 2009

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Corrosion Behavior of Pure Titanium and Titanium Alloys in Fluoride-containing Solutions.

Cited by 154 publications

References 6 publications

Fracture associated with hydrogen absorption of sustained tensile‐loaded titanium in acid and neutral fluoride solutions

Fracture associated with hydrogen absorption of sustained tensile‐loaded titanium in acid and neutral fluoride solutions

Corrosion Behavior and Surface Characterization of Ti-20Cr Alloy in a Solution Containing Fluoride

Corrosion mechanism of Ti–Cr alloys in solution containing fluoride

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