Biomimetic synthesis and characterization of hydroxyapatite/graphene oxide hybrid coating on Mg alloy with enhanced corrosion resistance

Preparation of Hydroxyapatite/Tannic Acid Coating to Enhance the Corrosion Resistance and Cytocompatibility of AZ31 Magnesium Alloys

“…However, due to a lack of nucleation centers for hydroxyapatite growth, direct biomimetic deposition of hydroxyapatite on untreated AZ31 magnesium alloy is very difficult [17]. Furthermore, the mechanical properties and chemical stability of the directly-prepared coating are deficient [18].…”

Silane/TiO2 coating to control the corrosion rate of magnesium alloys in simulated body fluid

“…Considering that these coatings must interact in a favourable manner with bone cells, many of the current approaches incorporate hydroxyapatite particles resulting in hybrid/composite layers [15][16][17]. Alternative options rely on the deposition of bioactive layers that favour hydroxyapatite precipitation from simulated body fluids (SBFs) [18,19]. Those containing TiO2, a recognized biocompatible oxide, have high potential for surface functionalization of Mg alloys [20].…”

Preparation and characterization of dopamine-induced biomimetic hydroxyapatite coatings on the AZ31 magnesium alloy

“…Recent investigation by Shadanbaz et al utilized an immersion technique to achieve brushite or monetite coatings, which showed a good corrosion protection under physiological conditions [15]. In support of this, Gao et al [16] prepared bioactive hydroxyapatite/graphene oxide (HA/GO) hybrid coatings on Mg alloys using the biomimetic method and results showed that the as-formed HA/GO biocoating was able to dramatically improve the corrosion resistance of Mg alloys. Ramazanoglu's group demonstrated that the combined delivery of bone morphogenetic protein-2 (BMP-2) and vascular endothelial growth factor (VEGF) from biomimetic octacalcium phosphate implant coatings enhanced bone mineralization around implants [17].…”