| People | Locations | Statistics |
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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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Legat, Andraž
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Susceptibility of X17CrNi16-2 martensitic stainless steel to hydrogen embrittlement after conventional and deep cryogenic heat treatmentcitations
- 2023Application of electrochemical methods for studying steel corrosion in alkali-activated materialscitations
- 2023Effect of surface machining on the environmentally-assisted cracking of Alloy 182 and 316L stainless steel in light water reactor environmentscitations
- 2023Characterization of steel corrosion processes in various blended cements by means of coupled multi-electrode arrayscitations
- 2023Application of electrochemical methods for studying steel corrosion in alkali‐activated materialscitations
- 2023Monitoring the galvanic corrosion of copper–steel coupling in bentonite slurry during the early oxic phase using coupled multielectrode arrayscitations
- 2021Sensor development for corrosion monitoring of stainless steels in H 2 SO 4 solutionscitations
- 2021Characterizing Steel Corrosion in Different Alkali-Activated Mortarscitations
- 2021Effects of blended cements and carbonation on chloride-induced corrosion propagationcitations
- 2021Stress corrosion crack initiation testing with tapered specimens in high-temperature water:Results of a collaborative research projectcitations
- 2021Characterizing steel corrosion in different alkali-activated mortarscitations
- 2021Sensor Development for Corrosion Monitoring of Stainless Steels in H2SO4 Solutionscitations
- 2021Stress corrosion crack initiation testing with tapered specimens in high-temperature water–results of a collaborative research projectcitations
- 2021Electrochemical corrosion tests on steel in alkali-activated materials
- 2021Influence of laser colour marking on the corrosion properties of low alloyed Ticitations
- 2021Sensor development for corrosion monitoring of stainless steels in H2SO4 solutionscitations
- 2021Stress corrosion crack initiation testing with tapered specimens in high-temperature watercitations
- 2020Depassivation and repassivation of stainless steels by stepwise pH changecitations
- 2020Tribocorrosive Study of New and In Vivo Exposed Nickel Titanium and Stainless Steel Orthodontic Archwirescitations
- 2020Monitoring the corrosion of steel in concrete exposed to a marine environmentcitations
- 2020Monitoring the Corrosion of Steel in Concrete Exposed to a Marine Environmentcitations
- 2020Stress corrosion crack initiation testing with tapered specimens in high-temperature water - results of a collaborative research projectcitations
- 2019Hydrothermal Synthesis of Rare-Earth Modified Titania: Influence on Phase Composition, Optical Properties, and Photocatalytic Activitycitations
- 2019Activation and Repassivation of Stainless Steels in Artificial Brines as a Function of pHcitations
- 2019Influence of Laser Colour Marking on the Corrosion Properties of Low Alloyed Ticitations
- 2019Activation and repassivation of stainless steels in artificial brines as a function of pHcitations
- 2019Hydrothermal synthesis of rare-earth modified titaniacitations
- 2019Elucidating nucleation stages of transgranular stress corrosion cracking in austenitic stainless steel by in situ electrochemical and optical methodscitations
- 2019Influence of laser colour marking on the corrosion properties of low alloyed Ticitations
- 2018Copper corrosion monitoring by electrical resistance probes in anoxic groundwater environment in the presence and absence of sulfate reducing bacteriacitations
- 2018Detection and characterization of stainless steel SCC by the analysis of crack related acoustic emissioncitations
- 2012Detection and characterisation of intergranular stress-corrosion cracking on austenitic stainless steelcitations
Places of action
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article
Activation and Repassivation of Stainless Steels in Artificial Brines as a Function of pH
Abstract
<jats:p>When planning oil wells with stainless steel components, two possible reasons for depassivation have to be considered—chemical depassivation caused by acidizing jobs and mechanical depassivation caused by various tools and hard particles. The study explores conditions causing chemical activation of investigated steels and circumstances under which repassivation occurs after activation. The main focus of the study is to determine, how quickly various steels can repassivate under different conditions and to find pH values where repassivation will occur after depassivation. The investigated steels were ferritic (martensitic or bainitic) in the cases of 13Cr, 13Cr6Ni2Mo, and 17Cr4Ni2Mo, austenitic in the case of 17Cr12Ni2Mo, and duplex (austenitic and ferritic) in the case of 22Cr5Ni3Mo. Potentiodynamic experiments were employed to obtain electrochemical properties of investigated steels, followed by immersion tests to find ultimate conditions, where the steels still retain their passivity. After obtaining this information, scratch tests were performed to study the repassivation kinetics. It was found that repassivation times are similar for nearly all investigated steels independent of their chemical composition and microstructure.</jats:p>