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ALT'23 The 30th International Conference on Advanced Laser Technologies
LS-P-9
Peculiarities of titanium surface morphology after oxidation with the "Laser paintbrush" hand tool
Veiko V.P., Morozova A.A., Sinev D.A., Odintsova G.V.
ITMO University, Saint-Petersburg, Russia Main author email address: aamorozova@itmo. ru
Local surface oxidation is a well-known method for imparting new functional properties to metals. This processing method can be used to protect products from external factors, increase antibacterial activity, change surface wettability, optical properties, etc. The last application is realized by color laser marking technology. Laser patterning, in addition to the usual methods, can be implemented using the "Laser paintbrush". However, when using this tool, we noticed that the surface morphology is different, which is investigated in this paper.
The fundamental difference between the "Laser paintbrush" tool under consideration and laser systems used in color laser marking technology is the manual type of control of the trajectory and scanning speed of the laser beam. The development of this device was aimed at integrating laser technologies into the field of artistic metal processing. It is of interest to compare the physical processes occurring during the transition from an electronic control method to an analogue (manual) one.
The objects of study were single laser tracks created by laser action with continuous laser sources with stationary and manual control. The surface morphology was studied by optical microscopy, spectrophotometry, scanning electron microscopy, and energy-dispersive X-ray microanalysis. The surface was studied perpendicular to the direction of the laser beam. Despite the similar principles of the formation of a colored oxide film on the surface, a comparative analysis of the surface morphology showed differences. On the surface modified with the "Laser Brush", periodic structures of the submicron order were found, as well as cellular structures presented in different sizes. In this work, we analyze each of the zones, which are different in morphological character, and put forward hypotheses about the reasons for their occurrence.
This research was supported by Priority 2030 Federal Academic Leadership Program
