Performance boost of co-rich fe-co based alloy magnetostrictive sensors via nitrogen treatment

Nakajima, Kenya; Kurita, Hiroki; Narita, Fumio

doi:10.1016/j.sna.2019.05.033

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…The final FeCo/AlSi composite was processed into a cylinder with a diameter of 10 mm and a length of 40 mm. According to several previous studies, [ 20,24,27 ] a specific shape for magnetostrictive materials has the benefits to enhance the efficiency of energy conversion. Therefore, it should be noted here that the used FeCo wires are not the straight but twisted shape, as shown in Figure a.…”

Section: Methodsmentioning

confidence: 99%

Twisting and Reverse Magnetic Field Effects on Energy Conversion of Magnetostrictive Wire Metal Matrix Composites

Yang

Wang

Seino

et al. 2020

Physica Rapid Research Ltrs

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Lightweight metal matrix composites have attracted a great attention for their technological application in aerospace, automotive, or sporting goods, and the multifunctionality of these composites will further expand the range of applications. Herein, a kind of lightweight 1–3 magnetostrictive FeCo/AlSi composites is investigated to evaluate the effects of the specific structure design and reverse magnetic field on the energy conversion under compression. The microstructure of the FeCo/AlSi composite before compression was observed, and the results indicate that there is a large bonding interface, which has the benefits of strain/stress transfer. Compared with the FeCo/AlSi composite with straight FeCo wire, a design with twisted FeCo wire significantly enhances the output performance of the magnetostrictive FeCo/AlSi composite. Furthermore, comparison of the output voltage for the FeCo/AlSi composite in the N–S mode (forward magnetization) and N–N mode (reverse magnetization) reveals that the reverse magnetization can improve the efficiency of the energy conversion notably. In addition, the results of the output voltage in the theoretical calculation are virtually consistent with that in practical measurement.

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Section: Methodsmentioning

confidence: 99%

Twisting and Reverse Magnetic Field Effects on Energy Conversion of Magnetostrictive Wire Metal Matrix Composites

Yang

Wang

Seino

et al. 2020

Physica Rapid Research Ltrs

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“…The additive production of sandwich structures with two different metals is also possible. In recent years, bonded two-metal layers comprising an Fe-Co layer and a Ni or SUS 304 layer have been fabricated as high-performance magnetostrictive energy harvesters [34]. They are expected to provide a higher output voltage when fabricated via DED than when fabricated via thermal diffusion bonding.…”

Section: Introductionmentioning

confidence: 99%

“…In the present study, the magnetostriction characteristics and crystal structure of Fe-Co, bulk fabricated via DED, were investigated. Research and development related to magnetostrictive materials was carried out to date [2,[4][5][6][16][17][18][19][20]34], with the novelty of this work being that the magnetostrictive alloys were fabricated via additive manufacturing technology and the magnetostrictive characteristics clarified.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Magnetostrictive Fe–Co Alloys

et al. 2022

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Fe–Co alloys are attracting attention as magnetostrictive materials for energy harvesting and sensor applications. This work investigated the magnetostriction characteristics and crystal structure of additive-manufactured Fe–Co alloys using directed energy deposition. The additive-manufactured Fe–Co parts tended to exhibit better magnetostrictive performance than the hot-rolled Fe–Co alloy. The anisotropy energy ΔK1 for the Fe–Co bulk, prepared under a power of 300 W (referred to as bulk−300 W), was larger than for the rolled sample. For the bulk−300 W sample in a particular plane, the piezomagnetic constant d was large, irrespective of the direction of the magnetic field. Elongated voids that formed during additive manufacturing changed the magnetostrictive behavior in a direction perpendicular to these voids. Magnetic property measurements showed that the coercivity decreased. Since sensors should be highly responsive, Fe–Co three-dimensional parts produced via additive manufacturing can be applied as force sensors.

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“…されている．さらに，センサへの応用を目指し，Fe Ga/ Fe Co 積層材料 (8) ，AlN/Fe Co 積層材料 (9) ，Tb Dy Fe/ Fe Co 積層材料 (10) や Fe Co コーティング (11) が開発されている他，Fe Co 系マイクロワイヤの応力誘起磁壁移動に関する研究 (12) (13) ． e 33 ＝s 33 s 33 ＋( (13) ，引張残留応力 (16) ，初期バイアス磁場 (17) ，熱処理温度 (17) などに依存して変化する．最近，Fe Co ファイバーとポリエステルファイバーとの織物材を用いてエポキシ樹脂複合材料が作製され，圧縮・三点曲げ荷重による磁束密度変化が計測されている (18) ．Fe Co ファイバーは，磁気異方性が高い上，縦弾性係数がエポキシ樹脂と大きく異なるため，複合材料にすることで，外力を作用させると Fe Co ファイバーのみに大きな応力が生じる (13) (26) ，切欠き (27) および初期バイアス磁場方向 (28)…”

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Magnetostrictive Fe-Co Integrated Composites for Kinetic Energy Harvesting

Narita

2020

Materia Japan

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Performance boost of co-rich fe-co based alloy magnetostrictive sensors via nitrogen treatment

Cited by 6 publications

References 16 publications

Twisting and Reverse Magnetic Field Effects on Energy Conversion of Magnetostrictive Wire Metal Matrix Composites

Twisting and Reverse Magnetic Field Effects on Energy Conversion of Magnetostrictive Wire Metal Matrix Composites

Additive Manufacturing of Magnetostrictive Fe–Co Alloys

Magnetostrictive Fe-Co Integrated Composites for Kinetic Energy Harvesting

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