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 language | English |
|---|---|
| Pages (from-to) | 205-208 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 56 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Feb 2007 |
Keywords
- Corrosion
- Hydrothermal synthesis
- NiTi
- Titanium oxide
- XPS
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- General Materials Science
- Metals and Alloys
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