Corrosion Resistance of the Pt-Fe-Nb Magnets for Dental-casting

Katsunori Haoka, Taro Kanno, Yukyo Takada, Kohei Kimura, Osamu Okuno

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Magnetic attachments have been used in clinical dental practice, but there is some difficulties associated with removable bridges. One possible solution is to make whole bridges of Pt-Fe magnet alloys and its abutment out of magnetic stainless steel by casting. In terms of castability and magnetic properties, the promising composition of the Pt-Fe-Nb magnet alloy is Pt-30.0 mass% Fe-0.6 mass% Nb and Pt-30.0 mass% Fe-0.5 mass% Nb-0.03 mass%Si. In the present study, the corrosion resistance of these alloys was investigated based on the elusion test, electrochemical behavior and surface characterization by EPMA analysis. The released elements from the Pt-Fe-Nb magnets were mainly Fe ions in quantities similar to that of stainless steel for biomedical use, and the Pt-Fe-Nb magnet alloy, the Pt-Fe-Nb-Si magnet alloy and platinum resembled each other in electrochemical behavior. The present findings suggest, that the Pt-Fe-Nb magnet alloy provides excellent corrosion resistance and has important clinical dental applications.

本文言語English
ページ(範囲)270-282
ページ数13
ジャーナルDental materials journal
19
3
DOI
出版ステータスPublished - 2000 9

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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