Electrodeposition of micro-nano hierarchically structured fluoridated hydroxyapatite coating on AZ31B alloy

ABSTRACT

In this study, a novel micro-nano hierarchically structured fluoridated hydroxyapatite (FHAp) coating on AZ31B substrate was successfully synthesized via a simple one-step electrochemical deposition method. And the formulation of the electrodeposition solution is simple and environment-friendly without any harmful additives. The FHAp coating consists of a large amount of nanorods and some micro-structured spherical aggregates composed of nanorods. Electrochemical tests demonstrated that the FHAp coating exhibited higher anti-corrosion property and lower degradation rate than that of pure HAp coating. Moreover, the FHAp coating with micro-nano hierarchically structured surface displayed good cell biocompatibility. The addition of fluorine ion into HAp coating can further promote the cell adhesion and proliferation. This work provides a simple, environment-friendly, and efficient way to prepare FHAp coating on AZ31B alloy with improved corrosion resistance and biocompatibility.

KEYWORDS:

• Electrodeposition
• micro-nano hierarchically structure
• fluoridated hydroxyapatite coating
• magnesium alloy
• corrosion resistance
• cell proliferation

Acknowledgements

The work was financially supported by the National Natural Science Foundation of China (Project No. 51602169).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant number 51602169].