About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Magnetic Materials for Sensors, Power, and Multifunctional Applications
|
Presentation Title |
High Saturation Magnetization of FeCoN Bulk Martensite |
Author(s) |
Tomohiro Tabata, Matahiro Komuro, Yusuke Asari, Shinya Tamura, Shohei Terada, Satoshi Sugimoto |
On-Site Speaker (Planned) |
Tomohiro Tabata |
Abstract Scope |
Fe16N2 with ordered nitrogen martensite has been reported to have a high saturation magnetization (μ0MS) of 2.80 T. On the other hand, according to the Slater-Pauling rule, the addition of Co to Fe is known to increase μ0MS. Based on these findings, it is expected that the μ0MS can be enhanced by introducing nitrogen-based martensite into the Fe-Co system. In this study, we report the enhancement of μ0MS by bulk Fe-Co-N martensite synthesized by gas nitriding method. The μ0MS of the fabricated foils was evaluated using a vibrating sample magnetometer and showed a high value of 2.43 T (241 A·m2/kg), which is about 3% higher than that of the raw material. The formation of martensite on the foil surface was confirmed by X-ray diffraction measurement. Therefore, it is considered that the formation of Fe-Co-N martensite by gas nitriding was successfully achieved and thereby the μ0MS was enhanced. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Magnetic Materials, Phase Transformations |