Ion implantation was applied to modify the surface properties of magnesium alloy. About
75 keV titanium ions with a dose of 5×1017 ions/ cm-2 and about 35 keV nitrogen ions with a dose of
3×1017 ions/ cm-2 were implanted into AZ31 magnesium alloy, respectively. AFM and FESEM were
used to examine the surface morphology of the treated samples. In contrast to the smooth surface
treated by N ion implantation, the Ti-treated surface was severely damaged. AES analysis reveals that
both kinds of ions implanted in AZ31 magnesium alloy took on a quasi-Gaussian distribution in the
near surface region. In the corrosion test, the N-implanted sample showed a better corrosion
resistance in 3.5wt.% NaCl solution than bare AZ31 sample, whereas the Ti-implanted sample
accelerated the corrosion behavior of AZ31 in this solution
The purpose of this study was to improve the cellular compatibility and corrosion resistance of AZ31 magnesium alloy and to prepare a biodegradable medical material. An aminated hydroxyethyl cellulose (AHEC) coating was successfully prepared on the surface of a micro-arc oxide +AZ31 magnesium alloy by sol–gel spinning. The pores of the micro-arc oxide coating were sealed. A polarization potential test analysis showed that compared to the single micro-arc oxidation coating, the coating after sealing with AHEC significantly improved the corrosion resistance of the AZ31 magnesium alloy and reduced its degradation rate in simulated body fluid (SBF). The CCK-8 method and cell morphology experiments showed that the AHEC + MAO coating prepared on the AZ31 magnesium alloy had good cytocompatibility and bioactivity.
Development and assessment of a multifunctional chitosan-based coating applied on AZ31 magnesium alloy: Corrosion resistance and antibacterial performance against Klebsiella Pneumoniae