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Proceedings Paper

Surface structuring of titanium under pulsed Nd:YAG laser irradiation
Author(s): Eniko Gyorgy; A. Perez del Pino; P. Serra; Jose-Luis Morenza
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Paper Abstract

Multi-pulse Nd:YAG (λ = 1.064 μm, τ ~ 100-300 ns, ν = 1-30 kHz laser irradiation of titanium at low intensities, below or in some cases just above the single-pulse melting threshold of titanium led to the development of a large variety of surface structures. The morphology evolution was strongly influenced by the number of the subsequent laser pulses as well as the ambient gas. In air the formation of crown-, or dome-shaped micro-structures was evidenced. In vacuum the micro-relief is characterized by smooth polyhedral structures developing in the surface plane. In nitrogen the cumulative laser irradiation induced the growth of uniformly distributed micro-column arrays with a high aspect ratio, protruding above the non-irradiated target surface. Morphological, structural and chemical characterizations of the laser treated surface areas were performed by scanning electron microscopy, X-ray diffractometry, Raman spectroscopy, and wavelength dispersive X-ray spectroscopy. The growth mechanisms which lead to the formation of the specific structures are investigated. Moreover, the potential applications of the laser processed surfaces are discussed.

Paper Details

Date Published: 21 October 2004
PDF: 10 pages
Proc. SPIE 5581, ROMOPTO 2003: Seventh Conference on Optics, (21 October 2004); doi: 10.1117/12.582800
Show Author Affiliations
Eniko Gyorgy, Univ. de Barcelona (Spain)
A. Perez del Pino, Univ. de Barcelona (Spain)
P. Serra, Univ. de Barcelona (Spain)
Jose-Luis Morenza, Univ. de Barcelona (Spain)

Published in SPIE Proceedings Vol. 5581:
ROMOPTO 2003: Seventh Conference on Optics
Valentin I. Vlad, Editor(s)

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