Functionalisation of titanium alloy surface through oxygen gas jet-assisted gliding arc discharge plasma

摘要

A modified surface layer was fabricated on Ti-6Al-4V samples by gliding arc discharge plasma assisted with an oxygen jet gas under atmospheric conditions. The oxidation reaction on the sample surface was promoted by active species with strong oxidising performance, such as oxygen and hydroxyl radicals. An amorphous titanium oxide layer was detected on the generated surface. The oxygen diffusion layer penetrated the substrate to an approximate depth of 500 nm. The generated surface exhibited higher biological cell adhesiveness and a lower elution amount of metal ions than the untreated sample surface. (C) 2019 Published by Elsevier Ltd on behalf of CIRP.