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Article

Influence of Aluminum Laser Ablation on Interfacial Thermal Transfer and Joint Quality of Laser Welded Aluminum–Polyamide Assemblies

1
Faculty of Science, Technology and Communication (FSTC), University of Luxembourg, L1359 Luxembourg, Luxembourg
2
Materials Research and Technology (MRT), Luxembourg Institute of Science and Technology, L4362 Esch-sur-Alzette, Luxembourg
3
Namur Institute of Structured Materials (NISM), LISE laboratory, University of Namur, 5000 Namur, Belgium
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(11), 768; https://doi.org/10.3390/coatings9110768
Received: 29 September 2019 / Revised: 30 October 2019 / Accepted: 12 November 2019 / Published: 19 November 2019
(This article belongs to the Special Issue Surface Treatment by Laser-Assisted Techniques)
Laser assisted metal–polymer joining (LAMP) is a novel assembly process for the development of hybrid lightweight products with customized properties. It was already demonstrated that laser ablation of aluminum alloy Al1050 (Al) prior to joining with polyamide 6.6 (PA) has significant influence on the joint quality, manifested in the joint area. However, profound understanding of the factors affecting the joint quality was missing. This work investigates the effects of laser ablation on the surface properties of Al, discusses their corresponding impact on the interfacial thermal transfer between the joining partners, and evaluates their effects on the joint quality. Samples ablated with different parameters, resulting in a range from low- to high-quality joints, were selected, and their surface properties were analyzed by using 2D profilometry, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive X-ray spectroscopy (EDX). In order to analyze the effects of laser ablation parameters on the interfacial thermal transfer between metal and polymer, a model two-layered system was analyzed, using laser flash analysis (LFA), and the thermal contact resistance (TCR) was quantified. Results indicate a strong influence of laser-ablation parameters on the surface structural and morphological properties, influencing the thermal transfer during the laser welding process, thus affecting the joint quality and its resistance to shear load. View Full-Text
Keywords: laser welding; metal–polymer; laser ablation; thermal contact resistance laser welding; metal–polymer; laser ablation; thermal contact resistance
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MDPI and ACS Style

Al-Sayyad, A.; Bardon, J.; Hirchenhahn, P.; Vaudémont, R.; Houssiau, L.; Plapper, P. Influence of Aluminum Laser Ablation on Interfacial Thermal Transfer and Joint Quality of Laser Welded Aluminum–Polyamide Assemblies. Coatings 2019, 9, 768. https://doi.org/10.3390/coatings9110768

AMA Style

Al-Sayyad A, Bardon J, Hirchenhahn P, Vaudémont R, Houssiau L, Plapper P. Influence of Aluminum Laser Ablation on Interfacial Thermal Transfer and Joint Quality of Laser Welded Aluminum–Polyamide Assemblies. Coatings. 2019; 9(11):768. https://doi.org/10.3390/coatings9110768

Chicago/Turabian Style

Al-Sayyad, Adham, Julien Bardon, Pierre Hirchenhahn, Regis Vaudémont, Laurent Houssiau, and Peter Plapper. 2019. "Influence of Aluminum Laser Ablation on Interfacial Thermal Transfer and Joint Quality of Laser Welded Aluminum–Polyamide Assemblies" Coatings 9, no. 11: 768. https://doi.org/10.3390/coatings9110768

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