Corrosion of the titanium and titanium alloys for biomaterials under fluoride containing environment

研究成果: Contribution to journalReview article査読

4 被引用数 (Scopus)

抄録

The corrosion behavior of pure Ti, Ti-6Al-4V, Ti-6Al-7Nb alloys and new Ti- (0.1-2.0) wt%Pt (or Pd) alloys in a fluoride containing environment were examined by anodic polarization and corrosion potential measurements. SEM observation was performed before and after immersion in the test solutions. The artificial saliva containing 0.1% and 0.2% NaF (corresponding to 453 and 905 ppmF) and artificial saliva with a low level of dissolved oxygen were used as the test solutions. In an acidic environment (pH4.0) including fluoride, surfaces were roughened markedly by corrosion for pure Ti and Ti-6Al-4V and Ti-6Al-7Nb alloys, although the surface of Ti-Pt (or Pd) alloys was not affected for the most part. With a low level of dissolved oxygen, surfaces were damaged microscopically by corrosion for pure Ti, Ti-6Al-4V and Ti-6Al-7Nb alloys even with a fluoride concentration included in commercial dentifrices, although the surface of Ti-Pt (or Pd) alloys did not change. The Ti-0.5wt%Pt (or Pd) alloys were expected to be useful as a new Ti alloy with high corrosion resistance in dental use.

本文言語英語
ページ(範囲)112-117
ページ数6
ジャーナルZairyo to Kankyo/ Corrosion Engineering
53
3
DOI
出版ステータス出版済み - 1 1 2004

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrochemistry
  • Materials Chemistry

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