Barnier, VHeintz, ORoberts, DEOltra, RCostil, S2007-06-292007-06-292006-04Barnier, 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 406-4090142-2421http://hdl.handle.net/10204/821Copyright: 2006 John Wiley & Sons LtdDuring 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.enLaser cleaningAluminiumSurface modificationXPSSIMSMRI modelArticleBarnier, V., Heintz, O., Roberts, D., Oltra, R., & Costil, S. (2006). XPS and SIMS study of aluminium native oxide modifications induced by Q-switched Nd :YAG laser treatment. http://hdl.handle.net/10204/821Barnier, V, O Heintz, DE Roberts, R Oltra, and S Costil "XPS and SIMS study of aluminium native oxide modifications induced by Q-switched Nd :YAG laser treatment." (2006) http://hdl.handle.net/10204/821Barnier V, Heintz O, Roberts D, Oltra R, Costil S. XPS and SIMS study of aluminium native oxide modifications induced by Q-switched Nd :YAG laser treatment. 2006; http://hdl.handle.net/10204/821.TY - Article AU - Barnier, V AU - Heintz, O AU - Roberts, DE AU - Oltra, R AU - Costil, S AB - 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. DA - 2006-04 DB - ResearchSpace DP - CSIR KW - Laser cleaning KW - Aluminium KW - Surface modification KW - XPS KW - SIMS KW - MRI model LK - https://researchspace.csir.co.za PY - 2006 SM - 0142-2421 T1 - XPS and SIMS study of aluminium native oxide modifications induced by Q-switched Nd :YAG laser treatment TI - XPS and SIMS study of aluminium native oxide modifications induced by Q-switched Nd :YAG laser treatment UR - http://hdl.handle.net/10204/821 ER -