Efecto de las Características Superficiales en el Comportamiento Mecánico y Electroquímico de Aleaciones Bioabsorbibles de Magnesio Procesadas por Deformación Plástica Severa

Bioabsorbable magnesium (Mg) alloys are attractive candidates for temporary orthopedic implants due to their biocompatibility and elastic modulus close to that of bone, although their clinical application is limited by rapid degradation in physiological environments that compromises structural stability before bone consolidation. In this context, the present project focuses on the systematic analysis of the surface characteristics of Mg alloys processed by severe plastic deformation (SPD), considering parameters such as roughness, crystallographic texture, morphology, and the chemical composition of oxide/hydroxide layers. The aim is to evaluate how these surface features influence the overall material response, correlating their effect with mechanical properties (microhardness, tensile strength, fatigue), electrochemical behavior (EIS, Tafel, immersion tests), and degradation in simulated physiological solutions. In addition, biofunctional coatings will be explored to stabilize the surface and control corrosion kinetics without compromising bioabsorption or mechanical performance. Advanced characterization techniques (SEM, TEM, XRD, EBSD, AFM, XPS, Raman) will be employed to establish direct links between surface condition, microstructure, and functional performance, providing critical insights for the design of Mg-based implants with an improved balance between strength and controlled degradation.

Evaluar la influencia de la superficie de aleaciones bioabsorbibles de magnesio nanoestructuradas por deformación plástica severa (SPD) en el desempeño mecánico, electroquímico y bajo fatiga en medios fisiológicos simulados, incluyendo la aplicación de recubrimientos para optimizar su uso en implantes ortopédicos.

(1) Tecnologías Avanzadas para el Desarrollo y Aplicación de Materiales
(2) Caracterización de Materiales y Ensayos no Destructivos (END)
(3) Degradación y Protección de Materiales.