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- W4282011876 abstract "• Electrochemical degradation behavior of new Ca-Sr-Mg alloy is studied in Hanks’ solution. • Silicate anodized surface increases the alloy total resistance ( R t ) in the blank (H0) solution. • Addition of 4.0 g L −1 BSA (H4.0 solution) accelerates the corrosion rate and decreases R t . • Compared to H4.0, in the H6.0 solution R t value of the pristine surface is improved. • Anodization can slow down the corrosion rate in H4.0 solution after 24 h immersion. Recently, magnesium alloys have been intensively studied for their potential usage as bioabsorbable medical implants. Herein, in vitro degradation behavior of a new Mg alloy (AXJ530) was investigated under different conditions in Hanks' solution at 37 °C and pH 7.4 using open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP). Scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques were also applied to characterize the morphological and chemical composition of the alloy surface immersed in different solutions. The alloy was first examined as abraded surface, and after it was anodized in 0.1 mol L −1 Na 2 SiO 3 at a controlled potential of 1.0 V (vs. SCE) for 10 min. The results confirmed that anodization is sufficient to obtain a protective biocompatible thin film from silicate coating with better corrosion resistance of 0.67 ± 0.03 kΩ cm 2 , almost twice higher than of the pristine surface after 24 h immersion. Secondly, the influence of bovine serum albumin (BSA) at two different doses on the degradation behavior of the bare alloy surface was also studied. The results revealed a decrease in the degradation rate with raising the protein content from 4.0 g L −1 to 6.0 g L −1 . Finally, the synergetic influence of the thin silicate anodic coating on the degradation behavior of the alloy was scrutinized in Hanks' solution containing the lower BSA dose. The results suggested that silicate coating could be effective in suppressing the high degradation rate of AXJ530 Mg alloy as an absorbable implant." @default.
- W4282011876 created "2022-06-13" @default.
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- W4282011876 date "2022-08-01" @default.
- W4282011876 modified "2023-09-29" @default.
- W4282011876 title "Influence of anodization and bovine serum albumin on the degradation of new AXJ-magnesium alloy system as a bioabsorbable orthopedic implant" @default.
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- W4282011876 doi "https://doi.org/10.1016/j.jelechem.2022.116458" @default.
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