Study of surface layers and ejected powder formed by oxidation of titanium substrates with a pulsed Nd:YAG laser beam

• Published in: Applied surface science Vol. 255; no. 10; pp. 5574 - 5578
• Main Authors: Shupyk, I., Lavisse, L., Jouvard, J.-M., Marco de Lucas, M.C., Bourgeois, S., Herbst, F., Piquemal, J.-Y., Bozon-Verduraz, F., Pilloz, M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01-03-2009; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Laser treatments; Nanoparticles; Physics; Plasma; Titanium dioxide; Nanoparticles; Plasma; Laser treatments; Titanium dioxide; Inorganic compounds; YAG laser; Transition element compounds; Pulsed lasers; Laser radiation; Transition elements; Titanium; Oxidation; Titanium oxide; Surface layers
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2008.08.108

Laser treatment of a titanium surface at certain conditions initiates the formation of titanium oxide layers as well as micro (nano) scale powder ejected from the surface of the substrate. The resultant morphology of the surface as well as the size and the structure of the particles are all strongly dependent on the treatment parameters (laser fluence, pulse frequency, overlap parameter, etc.). In this study, titanium substrates were treated with an industrial pulsed Nd:YAG laser in air, with varying parameters. Surface layers and ejected materials were compared using scanning and transmission electron microscopy, X-ray diffraction and Raman spectroscopy. The rutile phase of TiO
2 dominates in the surface layers, while the ejected powder is mainly formed of anatase nanoparticles.