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

研究成果: Contribution to journalArticle査読

81 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)2239-2246
ページ数8
ジャーナルBiomaterials
26
15
DOI
出版ステータス出版済み - 5 2005

All Science Journal Classification (ASJC) codes

  • バイオエンジニアリング
  • セラミックおよび複合材料
  • 生物理学
  • 生体材料
  • 材料力学

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