Effect of C on Phase Evolution, Microstructure, and Magnetic Properties of Pr2Fe14B-Type Nanocomposites

Chiu, Chien‐Liang; Chang, H. W.; Chang, Chih‐Wen; Zhang, W.Y.; Chang, W.C.

doi:10.1016/s1006-706x(08)60171-5

Journal of Iron and Steel Research, International

2006

DOI: 10.1016/s1006-706x(08)60171-5

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Effect of C on Phase Evolution, Microstructure, and Magnetic Properties of Pr2Fe14B-Type Nanocomposites

Chien‐Liang Chiu

H. W. Chang

Chih‐Wen Chang

et al.

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“…It should be noted that less amount of Pr content in the nanocomposite PM could produce multiple metastable phases which can be suppressed by adding large amount of Titanium. [14] C H Chiu et al reported a coercivity value of 851 kA m À1 in the annealed Pr 9 Fe bal: B 11 Ti 2.5 ribbon with a large amount of refined Pr 2 Fe 14 B and α-Fe grains. [15]…”

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Ti‐Doped Nanocomposite Pr₂Fe₁₄B/α‐Fe Ribbons with High Coercivity

Alam,

Raza,

Han

et al. 2023

Physica Status Solidi (a)

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Nanocomposite permanent magnetic alloys are prepared by the melt‐spinning technique with wheel speed ranging from 21 to 33 ms−1. X‐ray diffraction results show that the as‐spun ribbon is rich of soft α‐Fe, hard Pr2Fe14B magnetic phases, and no other metastable phases are found in our alloy ribbon. Initial magnetization curves reveal that the coercivity mechanism of the ribbons vary with the content of Ti. For x = 2, coercivity is mainly determined by pure pinning; while for x = 1, 3, and 4, it is mainly controlled by the mixture of nucleation of domain and localized pinning at grain boundaries. The coercivity value of 1026 kA m−1, the highest value reported so far, is mainly generated from a pure pinning mechanism in the ribbon with x = 2. The recoil permeability shows a minimum value range from to for x = 2 alloy, suggesting strong exchange coupling between the magnetic grains and then leading to the concurrent reversal of soft and hard phase grains during the demagnetization process. The Henkel plots demonstrate only exchange interaction for x = 1 and exchange interaction with slightly magnetostatic interaction for x = 2, 3, and 4. The exchange interaction exhibits maximum strength for x = 2, which is the reason for high coercivity.

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mentioning

confidence: 99%

Ti‐Doped Nanocomposite Pr₂Fe₁₄B/α‐Fe Ribbons with High Coercivity

Alam,

Raza,

Han

et al. 2023

Physica Status Solidi (a)

View full text Add to dashboard Cite

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Magnetic Properties, Microstructure and Corrosion Resistance of Ce-doped Sm1-xCex(CobalFe0.14Cu0.07Zr0.05)7.5 Magnets

Zhou¹

2020

International Journal of Electrochemical Science

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The influence of the Ce content and the relation among the magnetic properties, corrosion resistance and microstructure of the Sm1-xCex(CobalFe0.14Cu0.07Zr0.05)7.5 magnets are systemically studied. The enhanced magnetic properties (Br = 11.01 kG, Hcj = 15.5 kOe, and (BH)max = 30.1 MGOe) have been obtained with the slight Ce-doped (x = 0.1). The lower values of the corrosion potential Ecorr and corrosion current density icorr for the Ce-doped magnet indicate that electrochemical corrosion rate of the Ce-doped magnet slows down and the corrosion resistance of the magnet is stronger. The microstructure results show that the Ce-doped magnet obtains a more uniform cellular structure with the smaller cell size and the homogeneous cell boundary phase, while the content of the Ce shows no observable difference between the cell and cell boundary.

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Effect of C on Phase Evolution, Microstructure, and Magnetic Properties of Pr2Fe14B-Type Nanocomposites

Cited by 2 publications

References 16 publications

Ti‐Doped Nanocomposite Pr₂Fe₁₄B/α‐Fe Ribbons with High Coercivity

Ti‐Doped Nanocomposite Pr₂Fe₁₄B/α‐Fe Ribbons with High Coercivity

Magnetic Properties, Microstructure and Corrosion Resistance of Ce-doped Sm1-xCex(CobalFe0.14Cu0.07Zr0.05)7.5 Magnets

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Effect of C on Phase Evolution, Microstructure, and Magnetic Properties of Pr2Fe14B-Type Nanocomposites

Cited by 2 publications

References 16 publications

Ti‐Doped Nanocomposite Pr2Fe14B/α‐Fe Ribbons with High Coercivity

Ti‐Doped Nanocomposite Pr2Fe14B/α‐Fe Ribbons with High Coercivity

Magnetic Properties, Microstructure and Corrosion Resistance of Ce-doped Sm1-xCex(CobalFe0.14Cu0.07Zr0.05)7.5 Magnets

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Product

Resources

About

Ti‐Doped Nanocomposite Pr₂Fe₁₄B/α‐Fe Ribbons with High Coercivity

Ti‐Doped Nanocomposite Pr₂Fe₁₄B/α‐Fe Ribbons with High Coercivity