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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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Pagot, Gioele
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Publications (8/8 displayed)
- 2024Mechanism of alteration in passivity of additively manufactured Ni-Fe-Cr Alloy 718 caused by minor carbon variationcitations
- 2024Role of the Microstructure in the Li-Storage Performance of Spinel-Structured High-Entropy (Mn,Fe,Co,Ni,Zn) Oxide Nanofiberscitations
- 2023Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni Foamscitations
- 2023Charge Storage Mechanism in Electrospun Spinel‐Structured High‐Entropy (Mn<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>Zn<sub>0.2</sub>)<sub>3</sub>O<sub>4</sub> Oxide Nanofibers as Anode Material for Li‐Ion Batteriescitations
- 2022Effect of Relaxations on the Conductivity of La1/2+1/2xLi1/2–1/2xTi1–xAlxO3 Fast Ion Conductorscitations
- 2022Effect of relaxations on the conductivity of La1/2+1/2xLi1/2-1/2 xTi1-xAlxO3 fast ion conductorscitations
- 2020Magnesium batteries: Current picture and missing pieces of the puzzlecitations
- 2018Interplay between chemical composition, synthetic parameters and ORR performance of “Pt-free” electrocatalysts for the ORR Including graphene-based “cores” and a carbon nitride “shell”citations
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article
Mechanism of alteration in passivity of additively manufactured Ni-Fe-Cr Alloy 718 caused by minor carbon variation
Abstract
Unlike conventional alloys, where carbon content typically promotes carbide compound formation and reduces localized corrosion resistance, the impact of carbon in additively manufactured materials remains largely unexplored due to rapid cooling rates inhibiting carbide formation. This study addresses the novel question of whether reducing carbon content benefits corrosion performance and its underlying mechanisms in Ni-Fe-Cr-based alloy 718. Employing high-resolution techniques and microcapillary electrochemical methods, it was revealed that higher carbon content increases dislocation density at cell boundaries. This increased dislocation density facilitates the enhanced ejection of nickel and iron from the protective chromium oxide layer on the surface, leading to the formation of a defective outer Ni-Fe oxide layer. This compromised layer subsequently diminishes the alloy's corrosion resistance, particularly under tensile stress conditions.