Electrochemical Performance of UHMWPE Biocompatible Coatings on Ti6Al4V Alloy in Simulated Body Solutions: Influence of Immersion Time

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).

Heat Treatment’s Vital Role: Elevating Orthodontic Mini-Implants for Superior Performance and Longevity—Pilot Study

“…The mechanical properties of Ti6Al4V alloys and 316L are crucial for their tribological behavior, wear resistance, and corrosion resistance, which are essential factors for their biocompatibility and integration into adjacent tissues. Ti6Al4V alloys are widely used in orthopedic implants due to their adequate mechanical properties, corrosion resistance, and biocompatibility [23]. Additionally, Ti6Al4V has excellent me-chanical properties, corrosion resistance, and superplasticity, making it a favorable material for various applications [24].…”

Mechanical, morphological, and numerical evaluation of biocompatible ultra‐high molecular weight polyethylene/nano‐zeolite nanocomposites

“…The application of ultra-high molecular weight polyethylene (UHMWPE) has witnessed a substantial rise, driven by its exceptional attributes including remarkable chemical stability, robust tribological performance, biocompatibility, chemical inertness, and effective electrical insulation. [1][2][3][4][5] UHMWPE stands out as an effective coating material owing to its low cost, facile coating process, low friction coefficient, and exceptional wear resistance. 6 This versatile material finds its application across numerous domains, ranging from orthopedic implant replacements 7 and artificial transplantation 8 to the fishery industry, 9 climbing equipment, 10 piping, 11 and machine components.…”

“…The application of ultra‐high molecular weight polyethylene (UHMWPE) has witnessed a substantial rise, driven by its exceptional attributes including remarkable chemical stability, robust tribological performance, biocompatibility, chemical inertness, and effective electrical insulation 1–5 . UHMWPE stands out as an effective coating material owing to its low cost, facile coating process, low friction coefficient, and exceptional wear resistance 6 .…”