High-Temperature Oxidation Behaviors of TA15 Titanium Alloy after Mechanical Grinding and Laser Cleaning

Abstract

This paper presents the results of a study on the high-temperature oxidation characteristics after mechanical and laser removal of TA15 titanium alloy oxide film. The morphology, components, and roughness of the surface were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and laser confocal microscope (OM). The oxide film can be effectively removed with mechanical grinding and laser cleaning, and the oxide film after mechanical grinding is thicker and looser than that of after laser cleaning. The oxide film is principally composed of TiO2, Ti2O3 and TiO. Besides, there is a small amount of aluminum oxide on the surface. The surface after mechanical grinding was rougher than that of after laser cleaning. Thus, this work indicates that laser can not only clean the oxide film completely, but also strengthen the surface, which is a promising way to favor the widespread application of laser cleaning technology.

激光清洗技术研究进展及挑战

“…Fig. 2 Cleaning methods and removal mechanisms for surface contaminants on typical components [25][26][27][28][29][30][31][32][33][34][35] 0402201 -4 3 Laser cleaning effect and mechanisms of oxide film on surface of aviation titanium alloy inlet [25][26][27] 4 Laser cleaning effect and mechanisms of paint on highspeed aluminum alloy car body surface [28][29] . (a) Surface morphologies after aluminum alloy cleaning; (b) main mechanism of laser dry cleaning of blue/red paint on aluminum alloy surface…”