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Open AccessArticle

Effect of Metal Surface Topography on the Interlaminar Shear and Tensile Strength of Aluminum/Polyamide 6 Polymer-Metal-Hybrids

1
Materials and Surface Engineering Group, Faculty of Mechanical Engineering, Chemnitz University of Technology, D-09107 Chemnitz, Germany
2
Micromanufacturing Technology Group, Faculty of Mechanical Engineering, Chemnitz University of Technology, D-09107 Chemnitz, Germany
*
Author to whom correspondence should be addressed.
Materials 2019, 12(18), 2963; https://doi.org/10.3390/ma12182963
Received: 26 August 2019 / Revised: 6 September 2019 / Accepted: 10 September 2019 / Published: 12 September 2019
Mechanical interlocking has been proven to be an effective bonding mechanism for dissimilar material groups like polymers and metals. Therefore, this contribution assesses several surface pretreatments for the metallic adherent. Blasting, etching, combined blasting and etching, thermal spraying, and laser structuring processes are investigated with regard to the achievable interlaminar strength and the corresponding surface roughness parameters. The experiments are carried out on EN AW-6082/polyamide 6 polymer-metal-hybrids, utilizing a novel butt-bonded hollow cylinder specimen geometry for determining the shear and tensile strength. The experimental results indicate that the surface roughness slope has a major impact on the interlaminar strength. A laser-generated pin structure is found to provide the best mechanical performance as well as the highest surface slope of all investigated structuring methods. View Full-Text
Keywords: polymer-metal-hybrid; surface pretreatment; mechanical interlocking; roughness evaluation; interlaminar shear strength; interlaminar tensile strength polymer-metal-hybrid; surface pretreatment; mechanical interlocking; roughness evaluation; interlaminar shear strength; interlaminar tensile strength
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MDPI and ACS Style

Saborowski, E.; Dittes, A.; Steinert, P.; Lindner, T.; Scharf, I.; Schubert, A.; Lampke, T. Effect of Metal Surface Topography on the Interlaminar Shear and Tensile Strength of Aluminum/Polyamide 6 Polymer-Metal-Hybrids. Materials 2019, 12, 2963.

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