1. Research groups
  2. Surface and Interface, Chemical Reactivity of Materials group

Surface and Interface, Chemical Reactivity of Materials group

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Corrosion test bench in water vapor conditions (2.5 kg/h ; 1000°C)
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 Corrosion test bench in water vapor conditions (2.5 kg/h ; 1000°C)

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Anodic film formed on an aluminium substrate by polarisation at 50 V in phosphoric acid
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 Anodic film formed on an aluminium substrate by polarisation at 50 V in phosphoric acid

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Nickel-base alloy in presence of sodium sulfate (1 mg/cm²) at 650°C in (air + 1000 ppm SO2) atmosphere
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Nickel-base alloy in presence of sodium sulfate (1 mg/cm²) at 650°C in (air + 1000 ppm SO2) atmosphere

Last publications

Presentation

The activities of the group focus on the study of the reactions affecting the surface of materials and on the development of innovative and controlled processes in order to provide solutions against corrosion.

The group specializes in the analysis of the corrosion behaviour and durability of metals and ceramics in various environments, especially in extreme conditions: high temperatures, aggressive chemical environments, thermal cycling conditions.

The research is carried out on the basis of thermodynamic modelling and a diversified range of instruments that enable the synthesis of solid materials or coatings (metallic alloys and ceramics). In this way, the characterization of the physicochemical properties (thermal, dilatometric, electrochemical) and the acquisition of the response of materials submitted to environmental stresses can be determined. This research aims on one hand to identify the influence of chemistry and microstructure on the oxidation and corrosion resistance, and on the other hand to functionalize the surfaces of metallic materials.

  • To limit the degradation of materials, three main methods are used, depending on the latitude offered by the application:
  • modification of the composition of materials
  • modification of the oxidizing nature of the environment (controlled atmosphere, reducing atmosphere, addition of a corrosion inhibitor)
  • modification of the surface by a conversion pre-treatment (anodizing, selective oxidation, etc.) or by a protective metal coating (thermochemical treatment, slurry)
Keywords
Interfaces
Corrosion
Electrochemistry
Multifunctional Coatings
Surface Treatments
Materials under Extreme Conditions
Accordéons

Research topics

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Oxidation rates and mechanisms for metallic materials at high temperatures

The development of new metallic materials (nickel-, cobalt- or niobium-based alloys, TiAl, skutterudites) or alloys produced by new methods such as additive manufacturing requires the identification of levers allowing to optimise their resistance to the environment and estimate their durability in conditions as close as possible to those encountered in service. The research involves the synthesis of model systems that are simplified in comparison with industrial alloys. This makes it possible to highlight the relationships that exist between the composition and microstructure of the materials and their reactivity.

Projects:

  • ANR ALUPLAT - LaSIE, IJL, Pprime, ICSM ( 2022-2026)
  • ANR DENICAM - IJL, Access Technology (2025-2028)
  • ANR DYNAMIC - CIRIMAT, IJL, LGC, Air Liquide, Safran (2022-2026)
  • Collaborations with Saint-Gobain SEVA, Saint-Gobain PAM
  • Collaborations with Safran Aircraft Engines, Safran Tech

Thesis:

  • Pauline SPAETER (2025-2028)
  • Bruno JACQUARD (2023-2026)
  • Louis HUNAULT (2022-2025)

Articles:

Study of the degradation mechanisms of metals and ceramics in the presence of a liquid phase by oxidation, corrosion, dissolution

The behaviour of materials in the presence of liquid phases is evaluated from room temperature to very high temperatures. Electrochemical techniques are implemented to identify the nature of the electroactive systems and the rate laws in extreme conditions. The treated subjects concern the degradation of waste incineration unit exchangers, the hot corrosion of aeronautical alloys by salt mixtures, the corrosion of chromino-forming alloys by silicate media (glass industry, waste vitrification) or the corrosion of thermal and environmental barriers by CMAS.

Projects:

  • Collaborations with Safran Tech, Safran Ceramics, Safran Aircraft Engines
  • Collaboration with CEA Saclay
  • Collaboration with IRT M2P
  • Collaboration with ONERA Chatillon
  • Collaboration with Institut Clément Ader
  • Collaboration with Centre des Matériaux Mines Paristech

Thesis:

  • Grégoire DUFOUR (2023-2026)
  • Elise PERUSE (2023-2026)
  • Louis SAINT-JEAN (2023-2026)
  • Thomas BRUNET (2024-2027)
  • André GERMAIN (2024-2027

Articles:

 

Development of protection solutions through the study of new materials and multifunctional coatings

The functionalization of the surfaces of metal alloys is often necessary to adapt the properties of structural materials to the physico-chemical characteristics of the environment or to the conditions of use. In this context, the research covers both aspects related to the inhibition of corrosion phenomena and the development of functional coatings. The group concentrates on chemical (in aqueous and gaseous phases) and electrochemical methods. Especially methods of high-potential (micro-arc oxidation) are used to propose new and multiple use properties (anti-oxidants and anti-fuels; anti-oxidants and wear-resistance; anti-oxidants and lubricants; self-healing coatings; etc.):

-    Study of the growth and sealing of anodized coatings
-    Functionalization by wet process of internal surfaces of complex 3D printed components
-    Vapor deposition of coatings

Project:

  • ANR C.ADER - IJL, Institut de Soudure, Musée de l’Air et de l’Espace, C2RMF (2023-2027)
  • AAP Région PIMP (cofinancement C2RMF)
  • Collaboration BASF
  • Collaboration Safran Landing Systems
    Thesis:
  • Roua KADDAH (2023-2026)
  • Yasser RASSIF (2023-2026)
  • Dorian LEPESANT (2024-2027)

Articles:

Kinetic and thermodynamic modelling

The study of degradation processes and the implementation of thermochemical treatments require thermodynamic data. When these are available, they make it possible to identify the present species and the nature of the expected phases. When they are not available, they must be determined experimentally and the corresponding equilibrium diagrams modelled. Modelling is also carried out to predict the lifetime of materials. The durability of a protective oxide layer, e.g. in a liquid silicate medium at high temperature, depends on the competition between growth and dissolution. Analytical models must then be established to predict the behaviour of these oxides as a function of the system parameters (T, P(O2), basic nature, viscosity).

  • Projects:

    COFECUB

Articles:

Know-how

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The group has its own fleet of equipment and the associated specific know-how enabling to perform degradation studies and to evaluate the potential of different coating solutions:

Methods for the development of structural materials and coatings

  • Arc melting
  • Induction melting
  • Sintering of powders
  • Chemical conversion
  • Anodizing and oxidation by electrolytic plasma
  • Pack-cementation (chemical vapor deposition)
  • "Slurry" method (Liquid metal-substrate reaction)

Thermal analysis methods

  • Differential thermal analysis
  • Thermogravimetric analysis
  • Dilatometry
  • Calorimetry
  • Predictive calculations (ThermoCalc, FactSage)

Specific electrochemical characterisations

  • Stationary methods for the determination of kinetics and corrosion processes
  • Electrochemical impedance spectroscopy
  • Electrochemistry in molten salts and molten silicate media (up to 1300°C)
  • Pulsed electrochemistry up to 700 V

Environmental demands

  • Treatment furnaces in controlled atmosphere up to 1700°C
  • Thermogravimetry in corrosive atmosphere (SO2, HCl)
  • Thermal cycling devices
  • Climatic chambers: salt fog tests, VDA, etc.

Technological transfer

  • Patent: Method for depositing an anti-corrosion coating, N. Ramenatte et al. (Université de Lorraine, CNRS, Air Liquide) (2015) WO2015044559 A1
     
  • Patent: Method for manufacturing a part coated with a protective coating, S. Knittel et al. (Université de Lorraine, SNECMA, SAFRAN) (2018) WO2016087766 – 2016
     
  • Patent: Turbine engine part covered with a protective ceramic coating, Method for manufacturing and for using such a part, L. Portebois, S. Mathieu, P. Berthod, M. Vilasi, M. Podgorski (Université de Lorraine, SAFRAN) (2019) EP 3359707 B1
     
  • Patent: Process for depositing a corrosion-protection coating on at least one portion of the surfaces of a metallic substrate having at least one cavity , N. Ramenatte et al. (Université de Lorraine, CNRS, AIR LIQUIDE), Accepted n° US10053780

Members

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Professors, assistant professors

Technical and support staff

PhD students

  • Thomas BRUNET
  • Grégoire DUFOUR
  • Bruno JACQUARD
  • Roua KADDAH
  • Dorian LEPESANT
  • Elise PERUSE
  • Yasser RASSIF
  • Louis SAINT-JEAN
Contact équipe

Publications

Articles

Thesis

HAL Collection

 

 

 

 

 

 

 

Contact

Head of the group
Stéphane MATHIEU
stephane.mathieu@univ-lorraine.fr
+33 (0) 3 72 74 26 46

Administrative contact

Adresse

Nancy-Artem

Adresse

Institut Jean Lamour
Campus Artem
2 allée André Guinier - BP 50840
54011 NANCY Cedex