Fabrication of Ni-Ti-O nanoporous film on NiTi alloy in ethylene glycol containing NaCl

Ruiqiang Hang*, Yanlian Liu, Ang Gao, Mingxiang Zong, Long Bai, Xiangyu Zhang, Xiaobo Huang, Bin Tang*, Paul K. Chu

*Corresponding author for this work

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    12 Citations (Scopus)

    Abstract

    Ni-Ti-O nanoporous film with pore diameters of 60–75 nm are produced anodically on NiTi in ethylene glycol containing 5–10 vol% H2O and 0.15–0.3 M NaCl at 10–20 V. The film fabricated in the NaCl-containing electrolyte are much thinner than those prepared in the HCl-containing electrolyte under similar experimental conditions, implying proper amount of H+ in the electrolyte accelerates formation of the nanopores. Moreover, the experimental conditions to grow Ni-Ti-O nanoporous film on NiTi are not proper for pure Ti and Ni. The film of 1.9 μm in thickness exhibits good cytocompatibility thus is suitable for biomedical applications.
    Original languageEnglish
    Pages (from-to)136-145
    JournalSurface and Coatings Technology
    Volume321
    DOIs
    Publication statusPublished - 15 Jul 2017

    Research Keywords

    • Anodization
    • Corrosion
    • Cytocompatibility
    • Nanoporous film
    • Nickel-titanium alloy

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