The Improvement of Durability of Biodegradable Magnesium Alloy by Using Bio-Inspired Coating

Abstract:

The observation of the natural world is increasingly inspiring the field of material science. A coating based on dopamine, the principle origin of the extraordinarily robust adhesion of the mussel to the solid surface, was used as an intermediate layer to decrease the degradation rate of a biodegradable device made of AZ31 magnesium alloy covered with an external organic coating. The dopamine-based film entailed a hydrophobic character to the sample, as confirmed by water contact angle test. The electrochemical analysis, made in Hank’s solution, showed that the bio-inspired film could improve the corrosion resistance of AZ31 when used together with an external organic coating.

• Periodical: Materials Science Forum (Volume 941)
• Pages: 2477-2482
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.2477
• Online since: December 2018
• Authors: Annalisa Acquesta*, Anna Carangelo, Tullio Monetta
• Keywords: Biodegradable Device, Bio-Inspired Coating, Corrosion, Surface Treatment, Wettability

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