Long-term corrosion inhibition mechanism of microarc oxidation coated AZ31 Mg alloys for biomedical applications

Effect of the Poly L-lactic Acid Coating on the Corrosion of Magnesium in Hank's Solution

“…From Figure 11, it can be concluded that Mg samples degradation initiated at areas where the coating was damaged (Gu et al 2013). Some samples underwent filiform corrosion and leaved flakes pattern on the sample surface due to water slipped in between fibres of PLLA layer to reach into Mg surface.…”

Degradation Behavior of Micro-Arc Oxidized ZK60 Magnesium Alloy in a Simulated Body Fluid

“…Mg alloys have a good biocompatibility and no cytotoxicity [10][11][12], and can degrade in vivo which obviates the need for a second surgery [13,14]. Furthermore, they can induce the formation of bone [15], and thus the damaged bone can be healed more quickly [16][17][18][19]. Therefore, Mg and its alloys have gained extensive attention as biomedical materials.…”

“…A number of researchers have investigated the corrosion behavior of Mg alloys. Gu et al [19] studied the corrosion product layer formed on the AZ31 alloy surface during immersion in SBF, and found that it enhanced the alloy's corrosion resistance. A corrosion model proposed by Gu et al [35] indicated that the corrosion resistance of a coating depends on the thickness of the compact layer and the compactness of the MAO coating.…”

Silicate-based Plasma Electrolytic Oxidation (PEO) coatings with incorporated CeO2 particles on AM50 magnesium alloy

“…Focused on the last strategy, plasma electrolytic oxidation is receiving interest as one of the most effective ways to coat Mg materials using an environmentally friendly process that confers the required improved corrosion and wear properties in one step [6,7]. This technique is based on anodizing process with polarization of the material to relatively high voltages in an appropriate electrolyte.…”