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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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Isotahdon, Elisa
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Penetration of corrosive species into copper exposed to simulated O2-free groundwater by time-of-flight secondary ion mass spectrometry (ToF-SIMS)citations
- 2023Characterization of surface films that develop on pre-oxidized copper in anoxic simulated groundwater with sulphidecitations
- 2023Reply to comment on “Penetration of corrosive species into copper exposed to simulated O 2 -free groundwater by time-of-flight secondary ion mass spectrometry (ToF-SIMS)”citations
- 2023Pitting corrosion on highly alloyed stainless steels in dilute sulphuric acid containing sodium chloridecitations
- 2021Corrosion of copper in sulphide containing environment: the role and properties of sulphide films – Annual report 2020
- 2021Corrosion-induced microstructure degradation of copper in sulfide-containing simulated anoxic groundwater studied by synchrotron high-energy X-ray diffraction and ab-initio density functional theory calculationcitations
- 2020Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environmentcitations
- 2019Tribocorrosion behaviour of two low-alloy steel grades in simulated waste solutioncitations
- 2019Tribocorrosion behaviour of non-passivating alloys
- 2019Behaviour of leaded tin bronze in simulated seawater in the absence and presence of tribological contact with alumina counterbodycitations
- 2019Tribocorrosion behaviour of non-passivating alloys:case examples and approaches to wear-corrosion synergy determination
- 2018Tribocorrosion behaviour of aluminium bronze in 3.5 wt.% NaCl solutioncitations
- 2017High temperature corrosion of gradient tubes for high temperature application
- 2017Corrosion Losses, Mechanisms and Protection Strategies for Sintered Nd-Fe-B Magnets
- 2016Development of Magnetic Losses During Accelerated Corrosion Tests for Nd-Fe-B Magnets Used in Permanent Magnet Generatorscitations
- 2015Enhanced photoactive and photoelectrochemical properties of TiO2 sol-gel coated steel by the application of SiO2 intermediate layercitations
Places of action
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report
Corrosion of copper in sulphide containing environment: the role and properties of sulphide films – Annual report 2020
Abstract
In COCOS project, the role and properties of sulphide films on copper surface are studied. OFP-copper samples were exposed to sulfide-containing anoxic simulat-ed groundwater for different durations. In 2020, the second year of the COCOS project, the work continued with characterization of previously exposed OFP-copper samples by new techniques. Also, new 9-month long exposure tests were started with sulphide concentrations ranging from 0 to 320 mg/L. The electrochemical measurements were conducted across the duration of the exposure test. As a result, trends in corrosion behaviour of copper was seen throughout the test. EIS results indicated the formation of the different corrosion product films on sample surfaces exposed. The protective effect of surface layers changes with time of exposure, and the behaviour is influenced by the amount of sulphide in the environment. A distinct and sharp increases in the open circuit po-tential values of copper samples were observed in some cases during the test. These were more common in environments with low sulphide amount and may be related to time when sulphide has been consumed by chemical reactions. The observation will be further studied in future. Corrosion rate of samples exposed to 0 mg/L, 32 mg/L and 320 mg/L of sulphide was determined also by measuring mass loss during 4-month test. One interest-ing finding was that the highest corrosion rates, ca. 0.4 µm/a, were obtained for samples exposed to sulphide content of 32 mg/L. Sample characterisation showed that the highest mass loss was most likely due to local defects on the samples, not uniform corrosion. HEXRD studies revealed significant lattice changes as deformation extending several hundreds of micrometers into the bulk. This is attributed to H infusion. The results demonstrate the risk for H-induced stress corrosion cracking of copper as canister material during long-term storage of nuclear fuel when exposed to sulfide-containing groundwater. The last year of the project is going on at the moment. Longer term experiments have been performed. Further analysis of new samples and data from electro-chemical measurements from longer exposures continues. Also, the last new ex-perimental tests will be conducted in 2021.