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- W4225257918 abstract "Plasma electrolytic oxidation (PEO) is widely used as a surface modification method to enhance the corrosion resistance of Mg alloy, the most likely applied biodegradable material used in orthopedic implants. However, the pores and cracks easily formed on the PEO surface are unfavorable for long-term corrosion resistance. In this study, to solve this problem, we used simple immersion processes to construct Mn and Fe oxyhydroxide duplex layers on the PEO-treated AZ31 (PEO-Mn/Fe). As control groups, single Mn and Fe oxyhydroxide layers were also fabricated on PEO (denoted as PEO-Mn and PEO-Fe, respectively). PEO-Mn showed a similar porous morphology to the PEO sample. However, the PEO-Fe and PEO-Mn/Fe films completely sealed the pores on the PEO surfaces, and no cracks were observed even after the samples were immersed in water for 7 days. Compared with PEO, PEO-Mn, and PEO-Fe, PEO-Mn/Fe exhibited a significantly lower self-corrosion current, suggesting better corrosion resistance. In vitro C3H10T1/2 cell culture showed that PEO-Fe/Mn promoted the best cell growth, alkaline phosphatase activity, and bone-related gene expression. Furthermore, the rat femur implantation experiment showed that PEO-Fe/Mn-coated Mg showed the best bone regeneration and osteointegration abilities. Owing to enhanced corrosion resistance and osteogenesis, the PEO-Fe/Mn film on Mg alloy is promising for orthopedic applications." @default.
- W4225257918 created "2022-05-04" @default.
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- W4225257918 date "2022-05-01" @default.
- W4225257918 modified "2023-10-16" @default.
- W4225257918 title "Oxyhydroxide-Coated PEO–Treated Mg Alloy for Enhanced Corrosion Resistance and Bone Regeneration" @default.
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- W4225257918 doi "https://doi.org/10.3390/jfb13020050" @default.
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