| Autor: |
Ramírez Reyes, José Luis, Gaytán-Macías, Deni, Galicia-Aguilar, Gonzalo, Tinoco-magaña, Julio Cesar, Martínez-López, Andrea, González-Mancera, Guillermina |
| Zdroj: |
ECS Transactions; January 2021, Vol. 101 Issue: 1 p147-158, 12p |
| Abstrakt: |
Magnesium and its alloys have been used as biodegradable materials with high potential in biomedical applications such as temporary and absorbable implants. A biodegradable coating system was evaluated here from a chitosan solution and a gelatin additive in acetic acid, which was applied by means of the electrospray procedure and another glutaraldehyde crosslinking additive was used. Magnesium and the coatings system in a Kokubo solution at 37°C to simulate body conditions and the Electrochemical Impedance Spectroscopy (EIS) technique for corrosion studies was studied. The obtained electrochemical response was analyzed using a proposed equivalent circuits, composed of circuit elements, such as resistors (R), capacitances (C), inductances (L), and considering the influence of the finite diffusion (O) and the Warburg type (W). The electrochemical parameters allow us to estimate the time constants of each studied corrosion system and the sought interpretation of the phenomenon with the physical processes that occur at the electrochemical interface of Mg and its anticorrosive protection. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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