LEPMI - Rubrique EIP Physicochimie 2022

Corrosion

Work in the field of corrosion focuses on studying dissolution/degradation mechanisms at metal/solution interfaces. The study of corrosion in applied systems (e.g. nanostructured, multi-element, high entropy alloys, etc.) or battery/electrolyser components is a major focus of our research, particularly in collaboration with our industrial partners. Professor Virginie Roche has been conducting studies on titanium and magnesium alloys for biomedical applications and, more specifically since 2021, for applications as biodegradable stents. The electrochemical characterisation of different coated and uncoated alloys (mineral or organic coatings) for biomedical applications is also a major area of research. The detailed study of interface mechanisms using electrochemical impedance spectroscopy is a key focus of the corrosion research programme.

More details
Stentn en alliage de Mg Relation microstructure et densité de courant       Caractéristiques électrochimiques et mécaniques des alliages pseudo hautes entropies de composition Fe61Cr11Mo8Nb4B16 and Fe61Cr11Mo8Ni4B16    
Selected publications:
  • Passive film formation on the new biocompatible non-equiatomicTi21Nb24Mo23Hf17Ta15 high entropy alloy before and after resting in simulated body fluid, Virginie Roche, Yannick Champion, Ivan A. Bataev, Alberto Moreira Jorge Junior, Corrosion Science 207 (2022) 110607
  • Electrochemical Impedance Spectroscopy (EIS) of parylene coated magnesium stents in organic solvent to study early corrosion control, Margarita Diaz-Ramos, Virginie Roche, Ran Song, Hongtao Fan, Christophe Bureau, Jean-Claude Lepretre, Corrosion Science 213 (2023) 110932
  • The study of passive film's resistivity distribution to crystalline Fe-based pseudo high entropy alloys: The use of measurement model and Cole-Cole regression, Weverson C Batalha, Alberto M. Jorge Junior, Marc Mantel, Yannick Champion, Virginie Roche, Corrosion Science Volume 230, 15 April 2024, 111905
  • Fe–Ni-based alloys as highly active and low-cost oxygen evolution reaction catalyst in alkaline media, Lucile Magnier, Garance Cossard, Vincent Martin, Céline Pascal, Virginie Roche, Eric Sibert, Irina Shchedrina, Richard Bousquet, Valérie Parry, Marian Chatenet, Nature Materials volume 23, pages 252–261 (2024)
Contrat :
  • IRP « International research Project » on the topics of « corrosion, hydrogen (storage), coating» , INPCHEM