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  • 1.
    Bulidon, Nicolas
    et al.
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Pélissier, Krystel
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Boissy, Clément
    M.E.C.M Rond-point de l'échangeur, France.
    Mendibide, Christophe
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Maillot, Valérie
    Andra, France.
    Bourbon, Xavier
    Andra, France.
    Crusset, Didier
    Andra, France.
    Hydrogen production through aluminium corrosion in a cement-based matrix2023In: Materials and corrosion - Werkstoffe und Korrosion, ISSN 0947-5117, E-ISSN 1521-4176, Vol. 74, no 11-12, p. 1765-1776Article in journal (Refereed)
    Abstract [en]

    In France, deep geological disposal is considered for the storage of high and intermediate-level long-lived radioactive wastes. For aluminium, the possibility to encapsulate the wastes in a cement-based matrix is studied. However, cement being an alkaline environment, aluminium can lose its passivity, starts to corrode leading to hydrogen evolution in the infrastructures and generate a possible explosive hazard after decades of storage if hydrogen can accumulate somewhere in the facility. It is therefore necessary to study the corrosion behaviour of aluminium in the different cements considered for the encapsulation to estimate the possible amount of hydrogen that could be generated through corrosion and design the cement capsules accordingly. This work mainly focused on the reaction occurring at the aluminium-cement interface. Raman spectroscopy did not highlight significant differences in the nature of the corrosion products forming at the cement/aluminium interface, leading to the conclusion that it is not the chemistry of the cement that is the key factor controlling the corrosion rate but rather the physical properties of the cement matrix. 

  • 2.
    LeBozec, Nathalie
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, KIMAB.
    Thierry, Dominique
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, KIMAB.
    Pelissier, Krystel
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, KIMAB.
    A new accelerated corrosion test for marine paint systems used for ship's topsides and superstructures2018In: Materials and corrosion - Werkstoffe und Korrosion, ISSN 0947-5117, E-ISSN 1521-4176, Vol. 69, no 4, p. 447-459Article in journal (Refereed)
    Abstract [en]

    Several studies sponsored by the French Naval Authorities have been conducted during the last 10 years aiming to develop more reliable testing conditions than the conventional neutral salt spray test that should not be used for prediction of material performance. A satisfying correlation to atmospheric field exposure on a ship in service was observed using a 6 months cyclic test from the automotive industry (e.g., Volvo STD23-0014) with a deviation inferior to 25% and an acceleration factor of 4. The possibility to shorten the test duration with a target of 3 months without losing correlation to field exposures is investigated in the present study. A design of experiment is used to study key parameters such as NaCl concentration, the mode of salt application and its frequency as well as the temperature. Ten different marine paint systems used for shipbuilding have been selected. The results indicate an enhancement of the aggressiveness of the test when doubling the salt concentration from 1 to 2 wt%, increasing the number of salt spray per week (from 2 to 3), and the temperature from 35 to 45 °C. The data are compared to marine field exposures in tropical and temperate climates. The most reliable testing conditions to field exposure in marine sites of severity from low C5M to CX on steel include cyclic corrosion tests using 2 wt% of NaCl.

  • 3.
    Pélissier, Krystel
    et al.
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Diler, Erwan
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Dossot, Manuel
    Université de Lorraine, France.
    Carteret, Cédric
    Université de Lorraine, France.
    Vittonato, Jean
    TotalEnergies OneTech, France.
    Castillon, François
    Téréga, France.
    Fontaine, Sylvain
    GRTgaz, France.
    Kerzerho, Thierry
    GRTgaz, France.
    Larché, Nicolas
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Lucas, Patrice
    BS Coatings, France.
    Effects and Consequences of an Alkali-Induced Cathodic Environment on Coating Aging2023In: Coatings, ISSN 2079-6412, Vol. 13, no 11, article id 1949Article in journal (Refereed)
    Abstract [en]

    The use of organic coatings in conjunction with cathodic protection (CP) for buried structures is the usual method for protecting steel against corrosion. When the organic coating loses its protective ability, regardless of the reason, the CP becomes the active protection, leading to a specific local environment. This environment can be characterized by high alkalinity, which can be detrimental for the coated structure, either by weakening the steel–coating interface or by the chemical aging of the coating. Thus, the coating must be compatible with CP and able to sustain aging under an alkaline environment. In this study, the susceptibility to alkaline aging and its consequences in regards to coating performance have been investigated for two commercial coatings used for buried structures—fusion bonded epoxy (FBE) and liquid epoxy (LE)—in free membrane and coated steel configurations. The results showed a clear impact of alkaline aging on the studied LE, leading to a significant reduction in coating resistance and ultimately, failure of the steel–coating interface, whereas the studied FBE remained stable. The presented results relate to a precise formulation of LE and FBE; however, the proposed chemical method appears to be relevant and shows the necessity of considering such specific aging results for coating specifications and improvements.

  • 4.
    Pélissier, Krystel
    et al.
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Le Bozec, Nathalie
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Thierry, Dominique
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Larché, Nicolas
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Evaluation of the Long-Term Performance of Marine and Offshore Coatings System Exposed on a Traditional Stationary Site and an Operating Ship and Its Correlation to Accelerated Test2022In: Coatings, ISSN 2079-6412, Vol. 12, no 11Article in journal (Refereed)
    Abstract [en]

    Anticorrosive coatings are widely used to protect steel against corrosion. Different standards exist to access the corrosion performance of anticorrosive paints. Among them, the so-called neutral salt spray test (NSST-ISO 9227) or cycling corrosion tests ISO 12944-6, ISO 12944-9, NACE TM0304, or NACE TM0404 can be named. It is well-known that some accelerated corrosion tests are not fully representative of the field exposure results. However, a lack in the literature exists correlating accelerated tests to field exposure, especially when long-term durations are considered. In this study, 11 different organic coatings have been investigated in terms of coating resistance to corrosion creep in two types of field exposure sites, namely a stationary site and an operating ship, and their performance was compared to two accelerated tests (ISO 12944-9 and modified ASTM D5894 standard). The results showed differences in the sites’ corrosivity and the coating systems’ performance as a function of the exposure sites. A lack of correlation exists between the ISO 12944-9 standard and the stationary site, due to the latter’s high corrosivity, while, to the contrary, a satisfying correlation with the operating ship was demonstrated; whereas, the modified ASTM D5894 standard showed a satisfying correlation with both types of sites.

  • 5.
    Pélissier, Krystel
    et al.
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Thierry, Dominique
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Multiscale and multi-technical approach to characterize the hot-dip galvanized steel surface and its consequence(S) on paint adhesion and tendency to blistering2021In: Coatings, ISSN 2079-6412, Vol. 11, no 6, article id 704Article in journal (Refereed)
    Abstract [en]

    It is well known that the surface state (cleanliness, composition) of galvanized steel prior to the application of an organic coating is an important parameter. The surface state will affect the adhesion properties of the complete system and therefore will also impact its corrosion resistance and its tendency to blistering. Before the application of a pretreatment layer, galvanized steel strips are normally alkaline cleaned. This step is known to remove the native oxide film formed on hot dip galvanized steel after processing and appears as one of the most important steps to study the impact of the surface properties on the performance of painted systems. This study focused on making use of the cleaning step to input a variability on the surface composition (mainly surface concentration of aluminum) and evaluate its consequence(s) on the performance of a complete paint system. The results showed that, a variability in terms of surface aluminum concentration could be achieved by the cleaning step and that signs of performance improvement in terms of adhesion and tendency to blistering were spotted with a low content of aluminum at the surface.

  • 6.
    Pélissier, Krystel
    et al.
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Thierry, Dominique
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Powder and high-solid coatings as anticorrosive solutions for marine and offshore applications?: A review2020In: Coatings, ISSN 2079-6412, Vol. 10, no 10, article id 16Article in journal (Refereed)
    Abstract [en]

    The constant change in coating technology and environmental regulations has led to the development of low-solvent to solvent-free organic coatings, such as powder and high-solid coatings. These two technologies are well developed, but are still not the preferred choice when considering anticorrosive coating for marine and offshore applications. This mostly arise from a lack of perspective in their long-term behavior and from the difficulty in their applications. This review's principal aim is to describe powder and high-solid technologies from their formulation and application to their use in marine and offshore applications while recalling and giving key notions needed when the field of anticorrosive coatings is considered. First, the requirement for coatings to be called anticorrosive will be given alongside with their protection and failure mechanisms. The formulation and application for high-solid and powder coatings will be exposed followed by the description of the type of coating chemistry used in harsh environment. Finally, high-solid and powder coatings behavior in these types of environment will be discussed. © 2020 by the authors.

  • 7.
    Vucko, Flavien
    et al.
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Prestat, Michel
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Holzer, L.
    Zurich University of Applied Sciences, Switzerland.
    Tribollet, B.
    Sorbonne Université, France.
    Pélissier, Krystel
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Thierry, Dominique
    RISE Research Institutes of Sweden, Materials and Production, Corrosion.
    Anodic degradation of Zn-Ni coatings in moderately alkaline NaCl solution2021In: Materials letters (General ed.), ISSN 0167-577X, E-ISSN 1873-4979, Vol. 293, article id 129701Article in journal (Refereed)
    Abstract [en]

    Carbon steel samples covered with initially crack-free zinc-nickel coatings were polarized with a small anodic overpotential in moderately alkaline NaCl solution. Along with zinc dissolution, the coatings developed a mud-crack pattern due to tensile stress release, allowing the electrolyte to access the underlying steel surface. Simonkolleite grew on both the zinc-nickel coating and the steel substrate. The resulting current density, that was first strongly anodic, switched to small cathodic values when the coating surface was almost fully covered by a compact simonkolleite layer. 

1 - 7 of 7
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