Corrosion behavior of magnetic refrigeration material La-Fe-Co-Si in distilled water

▶ In this paper, we study the corrosion behavior of La(Fe0.94Co0.06)11.7Si1.3 compound in distilled water and report an unexpected discovery that corrosion occurs at matrix phase rather than rare earth rich phase, which is different from other rare earth materials. The corrosion has decreased the maximum magnetic entropy change of the compound.