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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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Molak, Rafał
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Topics
Publications (11/11 displayed)
- 2021Influence of an aluminizing process on the microstructure and tensile strength of the nickel superalloy IN 718 produced by the Selective Laser Meltingcitations
- 2019Microstructure and corrosion resistance of warm sprayed titanium coatings with polymer sealing for corrosion protection of AZ91E magnesium alloycitations
- 2019Corrosion Resistance of Aluminum Coatings Deposited by Warm Spraying on AZ91E Magnesium Alloycitations
- 2019Functional properties of the novel hybrid coatings combined of the oxide and DLC layer as a protective coating for AZ91E magnesium alloycitations
- 2018The effect of microstructure anisotropy on low temperature fracture of ultrafine-grained ironcitations
- 2017Fatigue crack growth rate and tensile strength of Re modified Inconel 718 produced by means of selective laser meltingcitations
- 2016Influence of the corrosive environment on the Portevin–Le Chatelier plastic instability phenomenon in Al–1Mg and Al–3Mg model alloys
- 2016The effect of specimen size and Surface conditions on the local mechanical properties of 14MoV6 ferritic–pearlitic steelcitations
- 2014Magnesium AZ91 alloy cast mechanical properties measured by the Miniaturized Disc-Bend Testcitations
- 2012Strength and thickness of the layer of materials used for ceramic veneers bonding
- 2010Studies of Cu after severe plastic deformationcitations
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article
Corrosion Resistance of Aluminum Coatings Deposited by Warm Spraying on AZ91E Magnesium Alloy
Abstract
The corrosion resistance of aluminum coatings on Mg alloy (AZ91E) substrate was investigated in 3.5% NaCl solution. The Al coatings weredeposited using a warm spraying (WS) method under three different nitrogen flow rates (NFR): 1.0 m3/min, 1.5 m3/min, and 2.0 m3/min. Thedecrease of NFR during WS led to a decrease in the porosity of WS coatings from about 2.0% down to 0.5% and an increase in oxygencontent from 0.24% up to 0.85%. The Al coating with the lowest porosity and the highest oxygen content exhibited the lowest current density inthe passive range, highest breakdown potential during anodic polarization, and repassivation behavior. The impedance measurementsrevealed that this Al coating effectively protected the Mg substrate during 14 d of immersion in the test solution as its resistance remained fourorders of magnitude higher (11,266 Ω·cm2) when compared to bare substrate (∼70 Ω·cm2). The microscopic observations confirmed that thecoating remained consistent and well bonded to the substrate, and no corrosion products layer on coating/substrate interface was formed,indicating that the electrolyte did not penetrate through the coating. The higher porosity leads to faster degradation of the coatings formedunder higher NFR.