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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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Rożniatowski, Krzysztof
Warsaw University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2022Comparison Study of PVD Coatings: TiN/AlTiN, TiN and TiAlSiN Used in Wood Machiningcitations
- 2022Mechanical Behavior of Nitrocarburised Austenitic Steel Coated with N-DLC by Means of DC and Pulsed Glow Dischargecitations
- 2021Improving the Properties of Composite Titanium Nitride Layers on the AZ91D Magnesium Alloy Using Hydrothermal Treatmentcitations
- 2020Influence of nitrided and nitrocarburised layers on the functional properties of nitrogen-doped soft carbon-based coatings deposited on 316L steel under DC glow-discharge conditionscitations
- 2020CORROSION RESISTANCE OF NITROGEN-DOPED DLC COATINGS PRODUCED IN GLOW DISCHARGE CONDITIONS ON NITRIDED AUSTENITIC STEELcitations
- 2018The Influence of Selective Laser Melting (SLM) Process Parameters on In-Vitro Cell Responsecitations
- 2017Microstructure and mechanical properties investigation of CP titanium processed by selective laser melting (SLM)citations
- 2017The effect of current types on the microstructure and corrosion properties of Ni/NANOAl2O3 composite coatings
- 2016Influence of Nitrided Layer on the Properties of Carbon Coatings Produced on X105CrMo17 Steel Under DC Glow-Discharge Conditionscitations
- 2016Synthesis and structural study of a self-organized MnTiO3-TiO2 eutecticcitations
- 2015Quantitative imaging of electrospun fibers by PeakForce Quantitative NanoMechanics Atomic Force Microscopy using etched scanning probescitations
- 2009Description of the homogeneity of material microstructures: using computer-aided analysiscitations
- 2008PrAlO3−PrAl11O18 Eutectic: Its Microstructure and Spectroscopic Propertiescitations
- 2006Self-Organized, Rodlike, Micrometer-Scale Microstructure of Tb3Sc2Al3O12−TbScO3:Pr Eutecticcitations
- 2001Free surface contribution to sensitization of an austenitic stainless steelcitations
Places of action
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article
The Influence of Selective Laser Melting (SLM) Process Parameters on In-Vitro Cell Response
Abstract
The use of laser 3D printers is very perspective in the fabrication of solid and porous implants made of various polymers, metals, and its alloys. The Selective Laser Melting (SLM) process, in which consolidated powders are fully melted on each layer, gives the possibility of fabrication personalized implants based on the Computer Aid Design (CAD) model. During SLM fabrication on a 3D printer, depending on the system applied, there is a possibility for setting the amount of energy density (J/mm3) transferred to the consolidated powders, thus controlling its porosity, contact angle and roughness. In this study, we have controlled energy density in a range 8–45 J/mm3 delivered to titanium powder by setting various levels of laser power (25–45 W), exposure time (20–80 µs) and distance between exposure points (20–60 µm). The growing energy density within studied range increased from 63 to 90% and decreased from 31 to 13 µm samples density and Ra parameter, respectively. The surface energy 55–466 mN/m was achieved with contact angles in range 72–128° and 53–105° for water and formamide, respectively. The human mesenchymal stem cells (hMSCs) adhesion after 4 h decreased with increasing energy density delivered during processing within each parameter group. The differences in cells proliferation were clearly seen after a 7-day incubation. We have observed that proliferation was decreasing with increasing density of energy delivered to the samples. This phenomenon was explained by chemical composition of oxide layers affecting surface energy and internal stresses. We have noticed that TiO2, which is the main oxide of raw titanium powder, disintegrated during selective laser melting process and oxygen was transferred into metallic titanium. The typical for 3D printed parts post-processing methods such as chemical polishing in hydrofluoric (HF) or hydrofluoric/nitric (HF/HNO3) acid solutions and thermal treatments were used to restore surface chemistry of raw powders and improve surface.