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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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Moore, Stacy R.
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Microstructural Analysis of Ex-Service Neutron Irradiated Stainless Steel Nuclear Fuel Cladding by High-Speed AFM
- 2024The Transient Thermal Ageing of Eurofer 97 by Mitigated Plasma Disruptions
- 2024A correlative approach to evaluating the links between local microstructural parameters and creep initiated cavitiescitations
- 2023Microstructural modelling and characterisation of laser-keyhole welded Eurofer 97citations
- 2022Stress Corrosion Cracking in Stainless Steelscitations
- 2021Sample Preparation Methods for Optimal HS-AFM Analysiscitations
- 2019Development of Fatigue Testing System for in-situ Observation of Stainless Steel 316 by HS-AFM & SEMcitations
- 2018A study of dynamic nanoscale corrosion initiation events by HS-AFMcitations
- 2018Development of an adapted electrochemical noise technique for in-situ corrosion monitoring of spent nuclear fuel aqueous storage environments
- 2017Investigating corrosion using high-speed AFM
- 2017In situ imaging of corrosion processes in nuclear fuel claddingcitations
Places of action
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article
A study of dynamic nanoscale corrosion initiation events by HS-AFM
Abstract
Atomic force microscopes (AFMs) are capable of high-resolution mapping of structures and the measurement of mechanical properties at nanometre scales within gaseous, liquid and vacuum environments. The contact mode high-speed AFM (HS-AFM) developed at Bristol Nano Dynamics Ltd. operates at speeds orders of magnitude faster than conventional AFMs, and is capable of capturing multiple frames per second. This allows for direct observation of dynamic events in realtime, with nanometre lateral resolution and subatomic height resolution. HS-AFM is a valuable tool for the imaging of nanoscale corrosion initiation events, such as metastable pitting, grain boundary (GB) dissolution and short crack formation during stress corrosion cracking (SCC). Within this study HS-AFM was combined with SEM and FIB milling to produce a multifaceted picture of localised corrosion events occurring on thermally sensitised AISI 304 stainless steel in an aqueous solution of 1% sodium chloride (NaCl). HS-AFM measurements were performed in situ by imaging within a custom built liquid cell with parallel electrochemical control. The high resolution of the HS-AFM allowed for measurements to be performed at individual reaction sites, i.e. at specific GB carbide surfaces. Topographic maps of the sample surface allowed for accurate measurements of the dimensions of pits formed. Using these measurements it was possible to calculate, and subsequently model, the volumes of metal reacting with respect to time, and so the current densities and ionic fluxes at work. In this manner, the local electrochemistry at nanoscale reaction sites may be reconstructed.