4.7 Article

Low-temperature alkali corrosion induced growth of nanosheet layers on NiTi alloy and their corrosion behavior and biological responses

期刊

CORROSION SCIENCE
卷 190, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109654

关键词

Nickel-titanium alloy; Alkaline corrosion; Nanosheets; Corrosion behavior; Antibacterial ability; Cytocompatibility

资金

  1. Fund for Shanxi 1331 Project Key Innovative Research Team [PY201809]
  2. Program for the Innovative Talents of Higher Education Institutions of Shanxi
  3. Natural Science Foundation of Shanxi Province [201801D121093,201801D121094]

向作者/读者索取更多资源

A reliable and cost-effective method, alkali corrosion, is used to construct nanosheet layers on a nearly equiatomic nickel-titanium (NiTi) alloy. The layers are mainly composed of TiO2, Na4TiO4, and Ni(OH)(2), with Ni content increasing with NaOH concentration. Despite slightly decreased corrosion resistance due to increased specific surface area, the nanosheet layers exhibit potent antibacterial ability and can promote endothelial spreading and proliferation. The combination of good corrosion resistance, antibacterial ability, and cytocompatibility makes the nanosheet layers promising as biomedical coatings for the NiTi alloy.
We report on a reliable and cost-effective method (alkali corrosion) to construct nanosheet layers on nearly equiatomic nickel-titanium (NiTi) alloy, which only needs to immerse it in 1- 15 M NaOH solution at low temperature (4-80 square). The layers are mainly composed of TiO2, Na4TiO4, and Ni(OH)(2), and Ni content increases with NaOH concentration. The layers exhibit potent antibacterial ability and can promote endothelial spreading and proliferation, although the corrosion resistance is slightly decreased due to significantly increased specific surface area. Good corrosion resistance, antibacterial ability, and cytocompatibility render the nanosheet layers promising as biomedical coatings of the NiTi alloy.

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