In situ hydrothermal synthesis of oxide film on NiTi for improving corrosion resistance in Hanks' solution

M. H. Wong, F. T. Cheng, Hau Chung Man

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)

Abstract

Hydrothermal treatment was used to grow oxide film on NiTi to improve corrosion resistance. The film was smooth and about 56 nm thick. X-ray photoelectron spectroscopy indicated that the surface atomic ratio Ni/Ti was reduced from 0.30 to less than 0.01 after treatment. The film was composed of Ti oxides, with a small amount of Ni. After hydrothermal treatment, corrosion resistance in Hanks' solution was significantly increased as indicated by electrochemical impedance spectroscopy and polarization tests, and crevice corrosion test.
Original languageEnglish
Pages (from-to)205-208
Number of pages4
JournalScripta Materialia
Volume56
Issue number3
DOIs
Publication statusPublished - 1 Feb 2007

Keywords

  • Corrosion
  • Hydrothermal synthesis
  • NiTi
  • Titanium oxide
  • XPS

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Metals and Alloys

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