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- W2071840300 abstract "The oxidation of a Sm2(Fe0.5Co0.5)17 alloy in air leads to a complete destruction of the initial intermetallic phases in the superficial layers. Three successive oxide scales are formed with parabolic growth kinetics. The activation energies obtained for the three oxide scales are, respectively, 69, 136 and 62 kJ mol−1 from the surface to the core of the samples. Samarium sublimation occurs in the external scale, constituted of α-Fe2O3 haematite and CoFe2O4 spinel. The first subscale, composed of α-(Fe,Co) and Sm(Fe,Co)O3 perovskite, is evidenced only above 630°C. The second subscale microstructure is made up of alternate parallel platelets of α-(Fe,Co) ferrite and Sm2O3 sesquioxide. From the parabolic rate constants, the oxygen diffusion mechanism is investigated in these subscales." @default.
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- W2071840300 date "1997-08-01" @default.
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- W2071840300 title "A structural and kinetic study of the oxidation of the intermetallic Sm2(Fe,Co)17 compound for permanent magnets" @default.
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- W2071840300 doi "https://doi.org/10.1016/s0304-8853(97)00148-0" @default.
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