Electrophoretically deposited graphene oxide on La(Fe, Si)₁₃ magnetocaloric alloys for improved corrosion resistance
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
The durability of La(Fe, Si)13-based magnetocaloric alloys in magnetic cooling devices present challenges mainly due to the material's susceptibility to corrosion in water-related heat transfer fluids. This study proposes an electrophoretic deposition method to deposit graphene oxide coatings on LaFe13.9Si1.4 thin plates under various applied voltages. The results show that the coating prepared at 5 V significantly enhanced corrosion resistance, achieving an inhibition efficiency of 36 %. Additionally, the LaFe13.9Si1.4-GO sample exhibited no reduction in the maximum magnetic entropy change. This study demonstrates that graphene oxide coatings can serve as effective corrosion-resistant coatings for La-Fe-Si magnetocaloric alloys, offering guidance to ensure the integrity of magnetic cooling devices over long term.
Date Issued
2025-12-15
Date Acceptance
2025-11-10
Citation
Journal of Magnetism and Magnetic Materials, 2025, 636
ISSN
0304-8853
Publisher
Elsevier
Journal / Book Title
Journal of Magnetism and Magnetic Materials
Volume
636
Copyright Statement
Copyright © 2025 Elsevier. This is the author’s accepted manuscript made available under a CC-BY licence in accordance with Imperial’s Research Publications Open Access policy (www.imperial.ac.uk/oa-policy)
License URL
Publication Status
Published
Article Number
173669
Date Publish Online
2025-11-11