Laser surface treatment of Ti-10Mo alloy under Ar and N2 environment for biomedical application

This is the authors' abstract. We don't add key points for this paper.

This paper evaluated the effects of laser beam irradiation based surface modifications of Ti-10Mo alloy samples under either Ar or N2 environment to the corrosion resistance and cell integration properties. The surface morphology and element distributions of Ti-10Mo samples after laser surface treatments were evaluated using a scanning electron microscope, energy-dispersive x-ray spectroscopy, and x-ray photoelectron spectroscopy. Phase analysis was performed with x-ray diffraction. The electrochemical behavior of the Ti-10Mo samples was evaluated in simulated body fluid maintained at 37 ± 0.5 °C, and a cell-material interaction test was conducted using the MLO-Y4 cells. Laser surface modification in the Ar environment enhanced corrosion behavior, but did not affect the surface roughness, element distribution, or cell behavior, compared to the untreated samples. Processing the Ti-10Mo alloy in N2 formed a much rougher TiN surface that improved both the corrosion resistance and cell-material integration compared with the other two conditions.