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

Masaharu Nakagawa, Shigeki Matsuya, Koich Udoh

Research output: Contribution to journalArticle

115 Citations (Scopus)

Abstract

The effects of fluoride concentrations and pH on the corrosion behavior of pure titanium, Ti-6Al-4V, Ti-6Al-7Nb alloys and a new Ti alloy adding palladium, which is expected to promote a repassivation of Ti were examined by anodic polarization and corrosion potential measurements. The amount of dissolved Ti was analyzed by inductively coupled plasma mass spectroscopy. The surface of the specimen was analyzed by X-ray photoelectron spectroscopy before and after the measurement. Pure Ti, Ti-6Al-4V and Ti-6Al-7Nb alloys were easily corroded even in a low fluoride concentration in an acidic environment. The corrosion resistance of Ti-0.2Pd alloy was greater than those of pure Ti, Ti-6Al-4V and Ti-6Al-7Nb alloys in the wide range of pH and fluoride concentrations. The high corrosion resistance of Ti-0.2Pd alloy was caused by the surface enrichment of Pd promoting a repassivation of Ti. The Ti-0.2Pd alloy is expected to be useful as a new Ti alloy with high corrosion resistance in dental use.

Original languageEnglish
Pages (from-to)305-314
Number of pages10
Journaldental materials journal
Volume20
Issue number4
DOIs
Publication statusPublished - Dec 2001

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Dentistry(all)

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