Thermally-stable high coercivity Ce-substituted hot-deformed magnets with 20% Nd reduction
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DOI: 10.1016/j.actamat.2020.03.017
Abstract: Abstract We demonstrate a 20% Ce-substituted Nd-Fe-B hot-deformed magnet with a large coercivity (µ0Hc) of 1.69 T and a remanent magnetization of 1.32 T, which are comparable to those for Nd-Fe-B sintered magnets. The temperature… read more here.
Keywords: hot deformed; deformed magnets; coercivity substituted; magnet ... See more keywords
Direct detection and stochastic analysis on thermally activated domain-wall depinning events in micropatterned Nd-Fe-B hot-deformed magnets
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DOI: 10.1016/j.actamat.2020.09.074
Abstract: Abstract Although the magnetization reversal process in the permanent magnets has long been studied, it has not been fully revealed. The recent progress of the computational science realizes the atomistic calculations for the thermally activated… read more here.
Keywords: domain wall; hot deformed; deformed magnets; wall depinning ... See more keywords
Effect of Tb-Fe diffusion on magnetic properties and thermal stability of hot-deformed magnets
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2018.09.205
Abstract: Abstract Hot-deformed Nd-Fe-B magnets co-doped with and without Tb-Fe addition are prepared to study the effect of Tb-Fe particles on the magnetic properties and thermal stability. With the addition of 2 wt. % Tb-Fe particles, the… read more here.
Keywords: hot deformed; thermal stability; deformed magnets; properties thermal ... See more keywords
Origins of inhomogeneous microstructure of hot-deformed nanocrystalline cylindrical Nd-Fe-B magnets and its effects on magnetization behaviors
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2019.04.076
Abstract: Abstract To apply bulk hot-deformed magnets into commercial fields, it is quite necessary to deeply understand the origins and evolution of their inhomogeneous microstructure. In this work, the microstructure of hot-deformed nanocrystalline cylindrical Nd-Fe-B magnets… read more here.
Keywords: hot deformed; microscopy; inhomogeneous microstructure; deformed nanocrystalline ... See more keywords
Lattice distortion and anisotropic thermoelectric properties in hot-deformed CuI-doped Bi2Te2·7Se0.3
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2019.152649
Abstract: Abstract We investigated anisotropic thermoelectric properties of (CuI)xBi2Te2·7Se0.3 (x = 0.0, 0.3, 0.6, and 0.9 mol.%) compounds, synthesized by the hot-press and hot-deformation process. In spite of polycrystalline compound, the hot-deformed compounds exhibit preferred orientation along the c-axis,… read more here.
Keywords: thermoelectric properties; hot deformed; anisotropic thermoelectric; lattice distortion ... See more keywords
Grain boundary diffusion behaviors in hot-deformed Nd2Fe14B magnets by PrNd-Cu low eutectic alloys
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2017.08.085
Abstract: Abstract High coercivity of hot-deformed Nd 2 Fe 14 B magnets was obtained by grain boundary diffusion. Comparable squareness and similar magnetic properties for samples diffusing from side and pole surfaces show little discrepancies if… read more here.
Keywords: grain boundary; hot deformed; diffusion; low eutectic ... See more keywords
Effect of pressless heat treatment on the magnetic performance and microstructure of hot-deformed Nd-Fe-B magnet
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2019.03.045
Abstract: Abstract Pressless heat treatment (PHT) at different temperatures was carried out on the samples cut off from the hot-deformed (HD) Nd-Fe-B magnets. It showed remarkably influence on both the remanence and coercivity of the HD… read more here.
Keywords: pressless heat; hot deformed; heat treatment; coercivity ... See more keywords
Effects of hot pressing temperature on the alignment and phase composition of hot-deformed nanocrystalline Nd-Fe-B magnets
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2019.165353
Abstract: Abstract The magnetic properties, alignment and phase composition of nanocrystalline Nd-Fe-B magnets hot deformed (HD) at 830 °C employing different hot-pressed precursors fabricated at various hot pressing (HP) temperatures were investigated. Both the remanence and coercivity… read more here.
Keywords: phase; nanocrystalline magnets; temperature; hot deformed ... See more keywords
Coercivity enhancement of nanocrystalline hot-deformed Nd-Fe-B magnets by low-melting eutectic MM-Cu (MM=La, Ce, Pr, Nd) alloys addition
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Rare Earths"
DOI: 10.1016/j.jre.2019.04.024
Abstract: Abstract MM85Cu15 (MM = La, Ce, Pr, Nd) eutectic alloys were added into the hot-deformed Nd-Fe-B magnets to enhance the coercivity. It is found that three endothermic peaks occur on the differential scanning calorimetry curve of the… read more here.
Keywords: deformed magnets; hot deformed; addition; coercivity ... See more keywords
Anisotropic behavior of grain boundary diffusion in hot-deformed Nd-Fe-B magnet
Sign Up to like & getrecommendations! Published in 2017 at "Scripta Materialia"
DOI: 10.1016/j.scriptamat.2016.10.017
Abstract: Abstract Grain boundary diffusion process using Nd70Cu30 was applied to the c-plane and ab-plane of hot-deformed Nd-Fe-B magnet. The coercivity was increased from 1.38 T to 2.44 and 2.20 T for the ab-plane and c-plane diffused specimens,… read more here.
Keywords: grain boundary; diffusion; hot deformed; deformed magnet ... See more keywords
Suppression of non-oriented grains in Nd-Fe-B hot-deformed magnets by Nb doping
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DOI: 10.1016/j.scriptamat.2017.12.032
Abstract: Abstract 0.2 at.%Nb doping to a Nd 12.83 Fe 76.7 Co 4.50 Ga 0.53 B 5.44 alloy suppress the surface crystallization in melt-spun ribbon, thereby suppressing the formation of non-oriented grains during the hot-deformation process to… read more here.
Keywords: hot deformed; deformed magnets; non oriented; suppression non ... See more keywords