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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/821

Title: XPS and SIMS study of aluminium native oxide modifications induced by Q-switched Nd :YAG laser treatment
Authors: Barnier, V
Heintz, O
Roberts, DE
Oltra, R
Costil, S
Keywords: Laser cleaning
Aluminium
Surface modification
XPS
SIMS
MRI model
Issue Date: Apr-2006
Publisher: John Wiley & sons Ltd
Citation: Barnier, V, et al. 2006. XPS and SIMS study of aluminium native oxide modifications induced by Q-switched Nd :YAG laser treatment. Surface and Interface Analysis, Vol. 38(4), pp 406-409
Abstract: During laser cleaning of aluminium in ambient atmosphere, modifications of the metal surface can be induced by transient thermal effects. This work aims to characterize the modification of the aluminium oxide layer on pure aluminium for a wide range of power per area using a Q-switched Nd :YAG (1064 nm) laser with two pulse durations, 10 and 180 ns. Experiments were carried out with single laser shots in ambient air at fluences (e.g. energy per area) below the ablation regime. For 10-ns pulses with fluences between 0.7 and 1.7 J/cm2, X-ray photoelectron spectroscopy (XPS) and secondary ion mass spectroscopy (SIMS) revealed thermal oxidation with an increase of the oxide-layer thickness for 0.7–1.3 J/cm2. Above a threshold at about 1.3 J/cm2 the oxide thickness decreased. The Mixing Roughness Model was used for the SIMS depth profile. For 180-ns pulses with fluences between 2.1 and 4.3 J/cm2, and therefore much lower power per area than with the 10 ns pulses, XPS showed a variation of surface composition with a different behaviour for 2.1–2.9 J/cm2 compared to 3.1–4.3 J/cm2. However, no significant changes of the average thickness of the oxide layer were found.
Description: Copyright: 2006 John Wiley & Sons Ltd
URI: http://hdl.handle.net/10204/821
ISSN: 0142-2421
Appears in Collections:Laser physics and technology
General science, engineering & technology

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