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Static, in vitro electrochemical and gravimetric corrosion studies were conducted to evaluate the effectiveness of 0.5-μm ultralow-temperature-isotropic (ULTI) carbon coatings in reducing the metal-ion release rates of porous titanium and solid Ti-6Al-4V alloy. The results indicated significant reductions for both materials, with the corrosion rate of carbon-coated porous titanium being reduced to that of solid uncoated Ti-6Al-4V. Analyses of the results indicate a minimum expected carbon-film lifetime of approximately 38 years.
ultralow-temperature-isotropic (ULTI) carbon, porous titanium, corrosion, carbon coatings, biocorrosion, titanium alloy, porous implants
Professor, University of Tennessee, Knoxville, TN
Graduate research assistant, University of Alabama at Birmingham, Birmingham, AL
Head of engineering, Carbomedics, Inc., Austin, TX