Effect of Electrodeposition Parameters on the Microstructure and Corrosion Behavior of ‎DCPD Coatings on Biodegradable Mg–Ca–Zn Alloy

Abstract

In this study, DCPD (Brushite, CaHPO4.2H2O) coatings were prepared on the surface of a Mg–Ca–Zn alloy using different current density (0.15–1.2 mA/cm2) and deposition time (5–90 min). The results revealed that DCPD with needle‐like morphology was observed for the current density between 0.15 and 0.4 mA/cm2‎, whereas ‎plate‐like morphology was obtained at current density above 0.8 mA/cm2. The results showed that surface roughness increased with increasing current density. The lowest corrosion rate of 0.14 mm/year was obtained for the dense and uniform DCPD coating ‎at 0.4 mA/cm2, while further increase has deleterious effect on the corrosion resistance.

Design of tailored biodegradable implants: The effect of voltage on electrodeposited calcium phosphate coatings on pure magnesium

“…The produced CaO could expand during its formation, disintegrating the DCPD coating and generating craters. Bakhsheshi‐Rad et al also reported volcano‐like sites in a DCPD coating formed galvanostatically at current density of 0.8 mA/cm 2 . However, they did not reveal the composition and microstructure of the crater.…”

“…Current density is a key factor to influence the phase composition and microstructure of a CaP coating . Studies have shown that current density can affect the weight and thickness of the coating deposited by a galvanostatic electrodeposition process. Currently, most of the available studies are focused on the characterization and evaluation of coatings deposited under given conditions, either galvanostatically or potentiostatically, without considering the detailed coating process or the dependence of the process on coating conditions.…”

Comparison study of different coatings on degradation performance and cell response of Mg-Sr alloy

“…As mentioned above, the inner corrosion layer was formed and thought to be responsible for the deterioration of the corrosion. Comparatively, Wang et al [42] and Hamid Reza et al [43] fabricated the Ca-P coating on the as-cast Mg-Zn-Ca alloy via electrodeposition method and similar inner corrosion layer was also found between the coating and substrate. It was found that the corrosion products layer was thin and acted as a transition layer which was helpful for the improvement on the interfacial bonding strength.…”

Apatite‐forming ability, cytocompatibility, and mechanical properties enhancement of poly methyl methacrylate‐based bone cements by incorporating of baghdadite nanoparticles

“…4 For instance, in a study by Abdolrazek et al, 5 PMMA was blended with PCL as a biocompatible and cost-effective polymer through casting method to enhance its structural and physical properties. [13][14][15] In this respect, Chen et al 16 demonstrated that the addition of 10 to 50 wt.% silicate-based ceramic (akermanite; Ca 2 MgSi 2 O 7 ) to PMMA resulted in escalating apatite formation ability and mechanical properties of pure PMMA. However, PMMA-PCL-based cements suffer from low bioactivity which results in the formation of a fibrous layer between bone and cement, hence leading to implant failure.…”

“…Moreover, several studies [10][11][12] verified that the addition of glass-ceramics containing Si, Ca, and Mg and silicate-based ceramic to the PMMA bone cement increases their bioactivity owing to the release of the Mg, Si, and Ca ions in the surrounding environment. [13][14][15] In this respect, Chen et al 16 demonstrated that the addition of 10 to 50 wt.% silicate-based ceramic (akermanite; Ca 2 MgSi 2 O 7 ) to PMMA resulted in escalating apatite formation ability and mechanical properties of pure PMMA. Among the Si-based bioceramics, baghdadite (BAGH) (Ca 3 ZrSi 2 O 9 ) with mechanical characteristics close to cortical bone and greater osteogenic properties and bioactivity has presented higher capability compared to the Ca-P bioceramics for orthopedic applications.…”