Electrochemical Corrosion Behavior and Mechanical Properties of Nanocrystalline Ti⁻6Al⁻4V Alloy Induced by Sliding Friction Treatment.

A nanograined (NG) layer with an average grain size of less than 100 nm has been successfully prepared on a Ti⁻6Al⁻4V sheet surface by sliding friction treatment (SFT). The electrochemical corrosion/passive behavior and mechanical properties of an NG Ti⁻6Al⁻4V sheet were examined in this study. A bi-layer passive film that consisted of an outer TiO₂-rich layer and an inner Al₂O₃-rich layer was formed on either an NG or coarse-grained (CG) surface.

A graded nano-TiN coating on biomedical Ti alloy: Low friction coefficient, good bonding and biocompatibility.

In order to solve wear resistance of Ti alloy biomaterials, the concept of a graded nano-TiN coating has been proposed. The coating was prepared on Ti-6Al-4V bio-alloy by DC reactive magnetron sputtering. The wear performance of the coated specimens was measured in Hank's solution under the load of 10N, and the biocompatibility was evaluated according to ISO-10993-4 standard.