FeCo-based FeCoBPSiCr Amorphous Alloy and Powder with High Saturation Magnetic Flux Density and Corrosion Resistance
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- Kajiura Y.
- Materials Research Center, TDK Corporation
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- Hasegawa A.
- Materials Research Center, TDK Corporation
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- Hosono M.
- Materials Research Center, TDK Corporation
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- Yoshidome K.
- Materials Research Center, TDK Corporation
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- Otsuka S.
- Magnetics Business Group, TDK Corporation
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- Ohkubo H.
- Magnetics Business Group, TDK Corporation
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- Matsumoto H.
- Materials Research Center, TDK Corporation
抄録
<p> Soft magnetic materials are required to obtain high saturation magnetic flux density (Bs) and corrosion resistance for suppressing the magnetic saturation and supporting usage environments in power supplies of information and communication technology (ICT) devices with large current driving. This study investigated the magnetic characteristics, amorphous stability, and corrosion behavior of (Fe0.7Co0.3)88−x−yB11PxSiyCr1 and conventional Fe79Si6B13C2 amorphous alloys. A metallic ribbon comprising (Fe0.7Co0.3)82B11P4Si2Cr1 exhibited high Bs of 1.71 T and amorphous forming ability of 87 μm, sufficient to obtain a single amorphous phase even in powder morphology. The (Fe0.7Co0.3)82B11P4Si2Cr1 amorphous alloy ribbon with a high corrosion potential of −520 mV showed better corrosion resistance than conventional Fe79Si6B13C2 amorphous alloy with a low corrosion potential of −677 mV in water immersion tests. The (Fe0.7Co0.3)82B11P4Si2Cr1 amorphous alloy powder comprised a single amorphous phase and exhibited high Bs of 1.61 T, the same as that of the conventional Fe79Si6B13C2 amorphous alloy powder. Furthermore, an inductor using the (Fe0.7Co0.3)82B11P4Si2Cr1 amorphous alloy powder exhibited high DC-bias characteristics and excellent corrosion resistance compared to that using the conventional Fe79Si6B13C2 amorphous alloy powder. The results suggested that inductor using the (Fe0.7Co0.3)82B11P4Si2Cr1 amorphous alloy powder with high DC-bias characteristic and excellent corrosion resistance contribute to correspond to large current and high reliability of ICT devices.</p>
収録刊行物
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- 日本磁気学会論文特集号
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日本磁気学会論文特集号 8 (1), 1-5, 2024-05-01
公益社団法人 日本磁気学会
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詳細情報 詳細情報について
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- CRID
- 1390581468909347200
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- ISSN
- 24320471
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- 抄録ライセンスフラグ
- 使用不可