| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Schmidt, Michael
Friedrich-Alexander-Universität Erlangen-Nürnberg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (53/53 displayed)
- 2024Additive manufacturing of duplex stainless steel by DED-LB/M and PBF-LB/M – process-material-property relationshipscitations
- 2024Unveiling thermo‐fluid dynamic phenomena in laser beam welding
- 2024Quick Large‐Area Detection of Thin Silicone Films with Coherent Raman Scattering Imaging
- 2024Experimental Investigations in the Processing of AISI H11 Powder Blends Enriched with Tungsten Carbide Nanoparticles for the Additive Manufacturing of Tailored Hot Working Tools in the Directed Energy Deposition (DED-LB/M)—Impact of Tungsten Carbide Nanoparticles on Microstructural and Mechanical Characteristics
- 2024Experimental Investigations in the Processing of AISI H11 Powder Blends Enriched with Tungsten Carbide Nanoparticles for the Additive Manufacturing of Tailored Hot Working Tools in the Directed Energy Deposition (DED-LB/M)—Impact of Tungsten Carbide Nanoparticles on Microstructural and Mechanical Characteristics
- 2024Understanding the thermo-fluid-microstructural impact of beam shaping in Laser Powder Bed Fusion using high-fidelity multiphysics simulation
- 2024Exploring spatial beam shaping in laser powder bed fusion:High-fidelity simulation and in-situ monitoringcitations
- 2024Towards an Understanding of the Challenges in Laser Beam Welding of Copper - Observation of the Laser-Matter Interaction Zone in Laser Beam Welding of Copper and Steel Using in Situ Synchrotron X-Ray Imagingcitations
- 2024A Systematic Investigation of Laser Beam Shape Variation on the Thermal and Melt Pool Dynamics in Laser Powder Bed Fusion of 316l Stainless Steel
- 2024Geometrical and Optical Properties of Optical Components Manufactured by Means of Stereolithography
- 2023Geometrical Influence on Material Properties for Ti6Al4V Parts in Powder Bed Fusioncitations
- 2023Microstructure and Mechanical Properties of Hypereutectic Al-High Si Alloys up to 70 wt.% Si-Content Produced from Pre-Alloyed and Blended Powder via Laser Powder Bed Fusioncitations
- 2023Towards an Understanding of the Challenges in Laser Beam Welding of Copper – Observation of the Laser-Matter Interaction Zone in Laser Beam Welding of Copper and Steel Using in Situ Synchrotron X-Ray Imagingcitations
- 2023Development of a novel wear-resistant WC-reinforced coating based on the case-hardening steel Bainidur AM for the substitution of carburizing heat treatmentscitations
- 2023Seam Properties of Overlap Welding Strategies from Copper to Aluminum Using Green Laser Radiation for Battery Tab Connections in Electric Vehiclescitations
- 2023Processing of Carbon Nanoparticle-Enriched AISI H11 Tool Steel Powder Mixtures in DED-LB/M for the AM of Forging Tools with Tailored Properties (Part II): Influence of Nanoscale Carbon Additives on Microstructure and Mechanical Propertiescitations
- 2023Impact of Particle Size Distribution in the Preform on Thermal Conductivity, Vickers Hardness and Tensile Strength of Copper-Infiltrated AISI H11 Tool Steelcitations
- 2023Revealing bulk metallic glass crystallization kinetics during laser powder bed fusion by a combination of experimental and numerical methodscitations
- 2023Electrophotographic 3D printing of pharmaceutical films
- 2023Innovative Process Strategies in Powder-Based Multi-Material Additive Manufacturingcitations
- 2023Influence of the in-situ heat treatment during manufacturing on the microstructure and properties of DED-LB/M manufactured maraging tool steelcitations
- 2023Tick-borne encephalitis virus IgG antibody surveillance: vaccination- and infection-induced seroprevalences, south-western Germany, 2021citations
- 2023Evaluation of Additively-Manufactured Internal Geometrical Features Using X-ray-Computed Tomographycitations
- 2022Why Color Matters—Proposing a Quantitative Stability Criterion for Laser Beam Processing of Metals Based on Their Fundamental Optical Propertiescitations
- 2022Laser pyrolyzed organosilazane‐based Al/ZrO₂ composite coating on stainless steel : Resulting microstructure and mechanical propertiescitations
- 2022Biodegradable Polylactide Supraparticle Powders with Functional Additives for Biomedical Additive Manufacturingcitations
- 2022PBF-LB/M of Low-Alloyed Steels: Bainite-like Microstructures despite High Cooling Ratescitations
- 2022Generation of Polyamide 12 Coatings on Stainless Steel Substrates by Directed Energy Deposition with a Thulium-Doped Fiber Laser (DED-LB/P)citations
- 2021Chemical Vapor Deposition of MoS 2 for Back-End-of-Line Applicationscitations
- 2021In-Situ Alloy Formation of a WMoTaNbV Refractory Metal High Entropy Alloy by Laser Powder Bed Fusion (PBF-LB/M)citations
- 2021Consolidation of thermoplastic coatings by means of a thulium-doped fiber lasercitations
- 2021Nanoparticle Additivation Effects on Laser Powder Bed Fusion of Metals and Polymers: A Theoretical Concept for an Inter-Laboratory Study Design All Along the Process Chain, Including Research Data Managementcitations
- 2021Laser Powder Bed Fusion (PBF-LB/M) Process Strategies for In-Situ Alloy Formation with High-Melting Elementscitations
- 2021In-Situ Process Monitoring during Laser Transmission Welding of PA6-GF30citations
- 2021Coupling Raman, Brillouin and Nd3+ Photo Luminescence Spectroscopy to Distinguish the Effect of Uniaxial Stress from Cooling Rate on Soda−Lime Silicate Glasscitations
- 2020Bottom‐Up Design of Composite Supraparticles for Powder‐Based Additive Manufacturingcitations
- 2020Investigation on the Case-Hardening Behavior of Additively Manufactured 16MnCr5citations
- 2020Lubricant free forming with tailored tribological conditions
- 2018Modeling of Laser Beam Absorption in a Polymer Powder Bedcitations
- 2018Analysis of the Weld Seam Morphology of Polypropylene in Laser Transmission Weldingcitations
- 2018A Round Robin study for selective laser sintering of polymers: Back tracing of the pore morphology to the process parameterscitations
- 2017Experimental investigations on Laser-based hot-melt bonding; Injection molding for Laser-structured metal plastic hybrids
- 2017Investigations on Laser-based Hot-melt Bonding of Additive Manufactured Plastic Parts to Metal Sheets for Strong and Tight Multi-material Joints
- 2017Stencil lithography of superconducting contacts on MBE-grown topological insulator thin filmscitations
- 2017Experimental Investigations on Laser-based Hot-melt Bonding and Injection Molding for Laser-structured Metal Plastic Hybrids
- 2017Investigation on Laser assisted wire bonding by means of droplet joining of novel thermoplastic-compatiple piezoceramic modules
- 2017Integration of piezoceramic composites in aluminium die casting structures and their functional characterization
- 2016Process-structure-property relationship of laser-joined thermoplastic metal hybridscitations
- 2016Self-healing thermal annealingcitations
- 2014Gas bubble formation in fused silica generated by ultra-short laser pulses
- 20143D polymer weld seam characterization based on optical coherence tomography for laser transmission welding applicationscitations
- 2013Impact of Surface Nano-textured Stainless Steel Prepared by Focused Ion Beam on Endothelial Cell Growthcitations
- 2011Laser soldering and laser droplet joining for mechanical and electrical contacting of LTCC/PZT laminatescitations
Places of action
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article
Consolidation of thermoplastic coatings by means of a thulium-doped fiber laser
Abstract
Thermoplastic polymers such as polyamide 12 (PA12) are of great interest for functional coatings in industry due to their good material properties (e.g., chemical and wear resistance and biocompatibility). In order to provide a high local selectivity of polymer deposition and to shorten the process chain, a laser-based coating process represents a promising approach for generating functional coatings. In this work, a laser-based coating process for PA12 powder on stainless steel substrates is investigated experimentally by using a thulium-doped fiber laser with a wavelength of 1.94 μm. Due to the higher inherent absorption of the laser radiation in the powder material, a thulium-doped fiber laser is more appropriate for processing PA12 powder in comparison to more common near-infrared laser beam sources with wavelengths around 1 μm. The influence of the main process parameters (laser power, scanning speed, hatch distance, and substrate temperature) on the resulting coatings was evaluated. For this purpose, optical microscopic analyses were performed to characterize the coating surfaces and cross sections in terms of possible defects. In order to assess the adhesion between the coating and the substrate, cross-cutting values were determined. On the basis of the quality characteristics regarding the coating surface, a process window was determined to produce a closed melting film, which fully covers the metallic substrate. By an adjustment of the scanning speed (5 mm/s) and line overlap (50%/62.5%), a broadening of the process window could be achieved. An additional substrate heating (T ≥ 90°C) is an appropriate strategy, which enlarges the size of the process window significantly. Optical microscopy analyses and cross-cutting tests verified the suitability of a thulium-doped fiber laser for processing dense PA12 coatings with an adequate adhesion to the stainless steel substrate. The substrate temperature is a decisive process parameter to obtain a homogeneous morphology and to further improve the adhesion between the metallic substrate and PA12 layer.