The corrosion behavior of sputter-deposited Mo-Ti alloys in concentrated hydrochloric acid

P. Y. Park, E. Akiyama, H. Habazaki, A. Kawashima, K. Asami, K. Hashimoto

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

Mo-Ti alloys composed of a single bcc solid solution have been prepared by a sputter deposition technique. The corrosion resistance of the Mo-Ti alloys in 12 M HCl is extremely high, being superior to that of molybdenum and titanium metals. The Mo-Ti alloys are spontaneously passivated in 12 M HCl. The corrosion potential of these alloys is slightly lower than that of molybdenum. The spontaneously passivated film on the alloys is significantly enriched in tetravalent molybdenum, as a consequence of preferential dissolution of titanium. The angle-resolved XPS analysis reveals that there is a compositional gradient in the passive film; molybdenum ions are concentrated in the exterior of the passive films while the concentration of titanium increases in the interior of the films.

Original languageEnglish
Pages (from-to)1649-1667
Number of pages19
JournalCorrosion Science
Volume38
Issue number10
DOIs
Publication statusPublished - 1996 Oct 1

Keywords

  • A. Alloy
  • A. Sputtered films
  • B. Polarization
  • B. XPS
  • C. Passive films

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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