Effect of laser beam parameters on melt mobilization and LIBS analysis of a special aluminum alloy containing zeolite

Osama Mostafa Khalil; Agnes Nakimana

doi:10.1117/12.2230316

22 July 2016 Effect of laser beam parameters on melt mobilization and LIBS analysis of a special aluminum alloy containing zeolite

Osama Mostafa Khalil, Agnes Nakimana

Author Affiliations +

Proceedings Volume 9983, Pacific Rim Laser Damage 2016: Optical Materials for High-Power Lasers; 99831A (2016) https://doi.org/10.1117/12.2230316
Event: Pacific Rim Laser Damage 2016: Optical Materials for High Power Lasers, 2016, Yokohama, Japan

Abstract

Aluminum alloy containing zeolite was analyzed by using nanosecond and femtosecond laser-induced breakdown spectroscopy (ns and fs-LIBS). The results reveal that Laser parameters, target physical properties, and ambient conditions affect the laser ablation process. The aluminum silicate minerals present in the alloy under investigation enable material volume expansion under compression. In laser interaction with this alloy, it has been observed that the crater depth decreases with the increase of the surface hardness. In ns –LIBS, it is noted that the ablation speed decreases with time and suddenly decreases with less sharp slope and after that the ablation speed increases slightly. In additional the results show the vanishing and reform of the crater rim with the increase of ablation time. Furthermore, a comparison between ns and fs-LIBS analysis has been done. Ns-LIBS analysis reveals that both spectra intensity and lines detection are significantly influenced by the ambient conditions. However in fs-LIBS, the ambient conditions affect the presented lines amplitude and width with the same effect on all lines.

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Osama Mostafa Khalil and Agnes Nakimana "Effect of laser beam parameters on melt mobilization and LIBS analysis of a special aluminum alloy containing zeolite", Proc. SPIE 9983, Pacific Rim Laser Damage 2016: Optical Materials for High-Power Lasers, 99831A (22 July 2016); https://doi.org/10.1117/12.2230316

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KEYWORDS

Aluminum

Laser ablation

Laser induced breakdown spectroscopy

Plasma

Magnesium

Zeolites

Silicon

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