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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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Hughes, Tony
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Interpretation of Complex X-ray Photoelectron Peak Shapes Part II: Case Study of Fe 2p3/2 fitting applied to Austenitic Stainless Steels 316 and 304.citations
- 2023Electrochemical and Surface Characterisation of Carbon Steel Exposed to Mixed Ce and Iodide Electrolytes
- 20203D characterization of material compositions with data-constrained modelling and quantitative X-ray CT
- 2018An examination of the composition and microstructure of coarse intermetallic particles in AA2099-T8, including Li detectioncitations
- 2017Probing corrosion initiation at interfacial nanostructures of AA2024-T3citations
- 2016Defect density associated with constituent particles in AA2024-T3 and its role in corrosioncitations
- 2016Using high throughput experimental data and in silico models to discover alternatives to toxic chromate corrosion inhibitorscitations
- 2016A closer look at constituent induced localised corrosion in Al-Cu-Mg alloyscitations
- 2015The influence of rare earth mercaptoacetate on the initiation of corrosion on AA2024-T3 Part II: The influence of intermetallic compositions within heavily attacked sitescitations
- 2015The influence of rare earth mercaptoacetate on the initiation of corrosion on AA2024-T3 Part I: Average statistics of each intermetallic compositioncitations
- 2014Towards chromate-free corrosion inhibitors: structure property models for organic alternativescitations
- 2014Microstructure characterisation and reconstruction of intermetallic particlescitations
- 2013A consistent description of intermetallic particle composition: An analysis of ten batches of AA2024-T3citations
- 2013Investigation into the influence of carbon contamination on the corrosion behavior of aluminum microelectrodes and AA2024-T3citations
- 2012A combinatorial matrix of rare earth chloride mixtures as corrosion inhibitors of AA2024-T3: Optimisation using potentiodynamic polarisation and EIScitations
- 2012FIB/SEM study of AA2024 corrosion under a seawater drop. Part IIcitations
- 2011Self-healing anticorrosive organic coating based on an encapsulated water reactive silyl ester: Synthesis and proof of concept
- 2011FIB/SEM study of AA2024 corrosion under a seawater drop: Part Icitations
- 2010Combining green self-healing coatings for metal protectioncitations
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article
A combinatorial matrix of rare earth chloride mixtures as corrosion inhibitors of AA2024-T3: Optimisation using potentiodynamic polarisation and EIS
Abstract
A combinatorial matrix of four rare earth chlorides (cerium, lanthanum, neodymium and praseodymium) has been evaluated to investigate their corrosion inhibition of aluminium alloy AA2024-T3.Two electrochemical techniques, potentiodynamic polarisation (PP) and electrochemical impedance spectroscopy (EIS), were used to evaluate the reactivity of AA2024-T3 substrates in 0.1M NaCl with the addition of 10-3 M of the 21 rare earth chloride mixtures at time periods of 1, 3, 6, 12 and 18 hours.PP experiments showed rare earth inhibition of up to 98 % within the first hour and thereafter slow increases in corrosion efficiency were observed. EIS experiments revealed that the surface processes occurring on AA2024-T3 within the first 6-hours of immersion could be analysed using a single time constant.On this basis the polarisation resistances after 6-hour immersion were determined from both PP and EIS experiments and the datasets from the two techniques were compared.PP and EIS results were in good agreement for systems exhibiting a low polarisation resistance, whereas polarisation resistances estimated by PP were larger than those estimated using EIS for solutions with increased inhibition.The open-circuit potential (OCP) of AA2024-T3 was observed to decrease as a function of time for all solutions, which is indicative of a cathodic inhibition mechanism.However, differing trends in the OCP were observed during PP and EIS experiments. The trends observed for the combinatorial matrix have been discussed in terms of likely mechanisms of corrosion inhibition with time.Whilst 10-3 M cerium chloride with no other rare earth addition was found to be the best inhibitor for AA2024-T3 in 0.1 M NaCl, this study developed four polarisation resistance datasets for the further analysis for synergistic effects in part II of this series.