The effect of Pt and Pd alloying additions on the corrosion behavior of titanium in fluoride-containing environments

M. Nakagawa, Y. Matono, S. Matsuya, K. Udoh, K. Ishikawa

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

In this study, we examined the corrosion behaviors of pure titanium, the alloys Ti-6Al-4V and Ti-6Al-7Nb, and the new experimental alloys Ti-Pt and Ti-Pd using anodic polarization and corrosion potential measurements in an environment containing fluoride. Before and after immersion in the test solutions, we made observations using a scanning electron microscope. The test solutions included an artificial saliva containing 0.2% NaF (corresponding to 905 ppm F) and an artificial saliva with a low concentration of oxygen. Although the surfaces of the Ti-Pt and Ti-Pd alloys were not affected by an acidic environment containing fluoride, the surfaces of the pure titanium, the Ti-6Al-4V alloy, and the Ti-6Al-7Nb alloy were markedly roughened by corrosion. The surfaces of the pure titanium, the Ti-6Al-4V alloy, and the Ti-6Al-7Nb alloy were microscopically damaged by corrosion when they were immersed in the solution containing a low concentration of dissolved oxygen, even with a fluoride concentration included in the commercial dentifrices. In this situation, however, the surfaces of the new Ti-Pt and Ti-Pd alloys were not affected. These alloys are expected to be of use in dental work as new titanium alloys with high corrosion resistances.

Original languageEnglish
Pages (from-to)2239-2246
Number of pages8
JournalBiomaterials
Volume26
Issue number15
DOIs
Publication statusPublished - May 1 2005

Fingerprint

Corrosion
Titanium
Fluorides
Alloying
Artificial Saliva
Dentifrices
Anodic polarization
Oxygen
Dissolved oxygen
Titanium alloys
Corrosion resistance
Immersion
Electron microscopes
Scanning
Tooth
titanium tetrafluoride
Electrons
titanium alloy (TiAl6V4)
Ti-6Al-7Nb alloy

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Ceramics and Composites
  • Biophysics
  • Biomaterials
  • Mechanics of Materials

Cite this

The effect of Pt and Pd alloying additions on the corrosion behavior of titanium in fluoride-containing environments. / Nakagawa, M.; Matono, Y.; Matsuya, S.; Udoh, K.; Ishikawa, K.

In: Biomaterials, Vol. 26, No. 15, 01.05.2005, p. 2239-2246.

Research output: Contribution to journalArticle

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