Enhancing corrosion resistance of biodegradable magnesium with dicalcium phosphate dihydrate and Chlorella sp. biomass
Lizeth del Carmen Gutierrez Pua,
Lily Margareth Arrieta,
Juan Carlos Rincon Montenegro,
Leonardo Antonio Di Mare Pareja,
Yaneth Pineda Triana,
Ana Fonseca Reyes,
Virginia Nathaly Paredes Mendez
Affiliations
Lizeth del Carmen Gutierrez Pua
Department of Mechanical Engineering, Universidad del Norte, Km 5 Via Puerto Colombia, Barranquilla, Colombia; Corresponding author
Lily Margareth Arrieta
Department of Mechanical Engineering, Universidad del Norte, Km 5 Via Puerto Colombia, Barranquilla, Colombia
Juan Carlos Rincon Montenegro
Department of Mechanical Engineering, Universidad del Norte, Km 5 Via Puerto Colombia, Barranquilla, Colombia
Leonardo Antonio Di Mare Pareja
Department of Mechanical Engineering, Universidad del Norte, Km 5 Via Puerto Colombia, Barranquilla, Colombia
Yaneth Pineda Triana
Department of Metallurgical Engineering, Universidad Pedagogica y Tecnologica de Colombia, Avenida Central del Norte 39-115, Tunja, Boyacá, Colombia
Ana Fonseca Reyes
Department of Mechanical Engineering, Universidad del Norte, Km 5 Via Puerto Colombia, Barranquilla, Colombia
Virginia Nathaly Paredes Mendez
Mechanical Engineering Department, Universidad del Norte, Km5 Vía Puerto Colombia, Barranquilla, Colombia; Biomedical Engineering Department, Universidad Simón Bolívar, Barranquilla, Colombia
Summary: Magnesium shows promise as a material for temporary fixation, yet its rapid corrosion poses health risks due to metal ion release. To mitigate these concerns, a biofunctionalization approach involving dicalcium phosphate dihydrate (DCPD) compounds and Chlorella sp. biomass was employed via electrodeposition, silanization, and dip-coating. Surface characterization using XRD, FTIR, and SEM confirmed successful deposition and immobilization. Corrosion behavior was assessed through electrochemical, immersion, and atomic absorption tests, revealing improved resistance and reduced Mg2+ ion release. The coatings demonstrated significant enhancement in corrosion resistance, guarding against pitting and cracks. The findings suggest the potential of Mg/DCPD and Mg/DCPD/microalgae coatings in addressing corrosion-related risks in temporary fixation applications, promising improved biocompatibility and longevity for medical implants.
