Author:
Anaya-Garza Karely,Domínguez-Crespo Miguel A.,Torres-Huerta A.M.,Palma-Ramírez D.,Rodríguez-Salazar A. E.,Ramírez-Meneses E.,Brachetti-Sibaja B.
Abstract
Ti6Al4V alloys are widely employed in the production of orthopedic implants due to their adequate mechanical properties, corrosion resistance, and biocompatibility. Nevertheless, these alloys present a high friction coefficient and low wear resistance limiting their half-life time. Then, once implanted, the interaction between the metal and the surrounding tissue can promote the corrosion process which in turn can ultimately trigger its rejection. In this work, ultra-high molecular weight polyethylene (UHMWPE) films were coated onto Ti6Al4V alloy substrates using the dip coating method to evaluate the influence of immersion time on the electrochemical performance in Simulated Body Solutions. The coating thickness was ranged from 11-20 µm changing the immersion time between 20 and 40 s. Structural characterization shows that an increase in the immersion time reduces the crystallinity of UHMWPE coatings and their porosity from 32 to 0.2%. The performance of the films as protective barriers against the corrosion process was enhanced with high immersion times, decreasing the corrosion rate up to 0.05 µm y-1 (40 s).
Publisher
The Electrochemical Society
Cited by
2 articles.
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