CHENNABASAPPA, Madhu; LAHAYE, Michel; CHEVALIER, Bernard; LABRUGÈRE, Christine; TOULEMONDE, Olivier

doi:10.1016/j.jallcom.2020.156554

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CHENNABASAPPA, Madhu
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

LAHAYE, Michel
Plateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]

CHEVALIER, Bernard
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

Ce document a été publié dans

Journal of Alloys and Compounds. 2021, vol. 850, p. 156554

Elsevier

Résumé en anglais

When the heat transport processes occur in a magnetic refrigeration device, there is possibility of corrosion thereforth, insight on the magnetocaloric regenerator corrosion could be shed in light. Our work mimicks this phenomenon by subjecting the magnetocaloric material Gd6Co1.67Si3 to controlled water flow. The corrosion is first explained based on the elemental electrochemical oxidation thereby allowing a new test by the exposing material in passive fluid (KOH) up to 1 year. The neglected degradation of the material was justified by X-Ray photoelectron spectroscopy (XPS) and depth profile Auger spectroscopy, and thus the control of its corrosion is reported. The effective control of the corrosion when material is exposed to KOH could be a universal procedure in magnetic refrigeration prototype.< Réduire

Mots clés en anglais

Magnetocaloric

Intermetallics

Corrosion

Photoelectron spectroscopies

magnetocaloric

intermetallics

corrosion

photoelectron spectroscopies

DOI

http://dx.doi.org/10.1016/j.jallcom.2020.156554

Project ANR

Nouveaux matériaux à effet magnétocalorique géant autour de la température ambiante et applications à la réfrigération magnétique - ANR-10-STKE-0008

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026