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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 effect of current types on the microstructure and corrosion properties of Ni/NANOAl2O3 composite coatings
Abstract
Nickel matrix composite coatings with a ceramic disperse phase have been widely investigated due to their enhanced properties, such as higher hardness and wear resistance in comparison to pure nickel. This paper describes the research on nickel and nickel-alumina coatings. The coatings were obtained from a Watts bath with the presence of nickel grain-growth inhibitors by DC (direct current), PC (pulse current) and PRC (pulsed reverse current) plating. The study includes the composite coatings of microcrystalline and nanocrystalline Ni matrix and nanometric Al2O3 particles. In order to ensure uniform co-embedding of the disperse phase particles with a nickel matrix and producing a stable suspension, mechanical agitation was also used. It was proved in our previous investigations that mechanical agitation is the best way of embedding nano-alumina particles in a nickel matrix. The effect of the electroplating techniques on the microstructure (SEM - scanning electron microscopy, STEM - scanning transmission electron microscopy, XRD - X-ray diffraction, surface profile) of Ni and Ni/Al2O3 composite coatings was investigated. In order to evaluate the corrosion resistance of the produced coatings, the corrosion studies were carried out by electrochemical impedance spectroscopy and the potentiodynamic method in a 0.5-M NaCl solution. Bode diagrams obtained by impedance spectroscopy method were established. The equivalent electric circuit and its parameters were determined to interpret impedance spectra. The corrosion current and corrosion potential were determined. Investigations of the corrosion damage to the produced surface layers were performed by scanning microscope techniques. The completed studies have shown that the type of current significantly affects the structure of the nickel and composite coatings, as well as their corrosion properties.