Corrosion resistance of Ti-29Nb-13Ta-4.6Zr alloy in a fluoride-containing solution

Shinji Takemoto, Masaaki Nakai, Masayuki Hattori, Masao Yoshinari, Eiji Kawada, Mitsuo Niinomi, Yutaka Oda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The objective of this study was to evaluate the corrosion behavior of Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with immersion in an acidic saline solution containing fluoride by investigating change in color and the surface structure of the oxide film. With immersion in fluoride-containing solution, TNTZ showed a less marked change in color than commercially pure titanium (TI), and a smaller decrease in glossiness. The outermost surface was covered with oxides from its constituent elements at before and after immersion in solution with or without fluoride. When immersed in fluoride-containing solution, the film consisted of larger niobium and tantalum oxides than that before or after immersion in solution without fluoride. In summary, TNTZ showed superior resistance to discoloration to TI after immersion in fluoride-containing solution. The results suggest that the subsequent increase in niobium and tantalum fractions in the oxide film in TNTZ improves resistance to corrosion.

Original languageEnglish
Title of host publicationBioceramics 24
PublisherTrans Tech Publications Ltd
Pages584-587
Number of pages4
Edition1
ISBN (Print)9783037855171
DOIs
Publication statusPublished - 2013
Event24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012 - Fukuoka, Japan
Duration: 2012 Oct 212012 Oct 24

Publication series

NameKey Engineering Materials
Number1
Volume529-530
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other24th Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2012
CountryJapan
CityFukuoka
Period12/10/2112/10/24

Keywords

  • Corrosion resistance
  • Discoloration
  • Fluoride
  • Surface oxide film
  • Titanium alloy
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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