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Notice of Removal: Study on Oxidation Process of Sm(Co 0.6 Cu 0.08 Fe 0.3 Zr 0.02 ) 8.35 Magnetic Powders

2022; IEEE Magnetics Society; Volume: 58; Issue: 6 Linguagem: Inglês

10.1109/tmag.2022.3156859

1941-0069

Kim Chung Song, Tal Hwan Kye, Hyok Chol U, Jong Hyok Rim,

Magnetic and transport properties of perovskites and related materials

In the atmosphere, R 2 Co 17 -type SmCo-based magnetic powders (Sm(Co 0.6 Cu 0.08 Fe 0.3 Zr 0.02 ) 8.35 ) a bit different in oxidation process as compared with bulk permanent magnet. This article describes investigation of the oxidation process of Sm(Co 0.6 Cu 0.08 Fe 0.3 Zr 0.02 ) 8.35 magnetic powders at up to 500 °C through thermogravimetric/differential thermal analysis (TG/DTA) and X-ray diffraction (XRD) technology. The result shows that oxides such as CuO, Co 3 O 4 , and CoFe 2 O 4 are firstly formed at 225 °C and then Sm 2 O 3 at 350 °C. At this point activation energy is 47 kJ/mol.