Electrochemical corrosion and anisotropic tribological properties of bioinspired hierarchical morphologies on Ti-6Al-4V fabricated by laser texturing
2019
Abstract Biomimetic texture could widen the application of titanium alloys materials in biological fields. In this work, the electrochemical corrosion and unidirectional tribological properties of Ti-6Al-4V substrate textured with three types of bionic hierarchical morphologies in the modified simulated body fluids ( m -SBF) have been evaluated. The experimental results reveal that the corrosion resistance of textured surfaces is improved by reducing the β phase /α phase volume ratio on the substrate and increasing the texture density. Moreover, the effect of friction-reducing of 79% and friction-increasing of 47% in unidirectional sliding can be easily tuned with laser processing parameters. Interestingly, the textured surface displays anisotropic tribological behaviour in m -SBF solution, with reducing friction along the stacked ring direction and increasing friction in other directions.
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