Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34736
Title: Comparison of corrosion resistance and apatite-forming ability of NiTi treated by different low-temperature methods
Authors: Wong, MH
Cheng, FT
Man, HC 
Keywords: Intermetallic
Thin films
Surface treatment
Corrosion
Electrochemical impedance spectroscopy
Issue Date: 2008
Publisher: Elsevier Ltd
Source: Journal of alloys and compounds, 2008, v. 466, no. 1-2, p. L5-L10 How to cite?
Journal: Journal of alloys and compounds
Abstract: A number of low-temperature soft methods recently attempted by the authors for preparing TiO2 coating on NiTi intermetallic are described. These methods include hydrothermal oxidation in water, sol–gel coating with steam post-treatment, low-voltage DC anodization in acetic acid, AC anodization in a calcium and phosphate containing medium, and electrodeposition. In all these methods, the temperature reached by the bulk of the substrate did not exceed 200 °C. The characteristics of the coatings acquired using various techniques are summarized. The increases in corrosion resistance for various samples in Hanks’ solution (a simulated body fluid commonly used to assess in vitro corrosion resistance) obtained from polarization study and electrochemical impedance spectroscopy are compared and discussed. The apatite-forming ability of the treated samples was also studied.
URI: http://hdl.handle.net/10397/34736
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2007.11.077
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