Nd-Fe-B
Thermodynamics of Oxygen in the Fe Nd O System for Production of Dy Free Nd Fe B Magnet
... sintered Nd-Fe-B magnet has the highest magnetic properties which meet the requirements in many commercial products such as voice coil motors for hard disk drives, industrial motors and generators, ...
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Mechanical Properties of Injection-Molded Nd-Fe-B Type Permanent Magnets
... A strong dependence on the concentration of particles, as well as the type of particles was observed as well. While the tensile strength of PPS compounds decreased in general with increasing volume percentage of ...
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Modification of the Interface Nanostructure and Magnetic Properties in Nd Fe B Thin Films
... the Nd overlayer and annealed at 500 °C ...the Nd oxide also in this ...sintered Nd-Fe-B magnets is that the Nd 2 Fe 14 B core is not ...
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Enhanced energy product in Y Co Fe magnets intermediate between Nd Fe B and ferrite
... There is increasing interest in finding oriented dense magnets with properties intermediate between sintered ferrite and sintered Nd-Fe-B, having reduced content of strategic rare earths. 1 ...
5
Evaluation of the Microstructural Contribution to the Coercivity of Fine Grained Nd Fe B Sintered Magnets
... Three types of NdFeB sintered magnets with different grain sizes were prepared by a novel pressless process 10) using 27.0 mass% Nd, 4.60 mass% Pr, 1.0 mass% Co, 0.10 mass% Cu, 0.25 mass% Al, 1.02 mass% ...
5
Micromagnetic Simulations of Magnetization Reversals in Nd Fe B Based Permanent Magnets
... of Nd-Fe-B permanent magnets such as grain size, grain shape, and grain boundary composition influence the magnetization reversals and ...hot-deformed Nd-Fe-B magnets leads to ...
9
Dynamic Mechanical Behaviour of Polymer Bonded Nd Fe B Composite Materials
... Magnetic composite materials with varied content of Nd Fe B particles in epoxy matrix are examined from a dynamic mechanical perspective. Structural, viscoelastic and magnetic properties of ...
6
Experimental study of the transport properties of Nd-Fe-B and Sm-Co magnets
... on Nd-Fe-B and Sm-Co compounds have to date the highest characteristics, such as coercive force, residual magnetic induction and maximum magnetic ...of Nd-Fe-B and Sm-Co systems ...
5
Effect of Annealing on Magnetic Properties of Ultrafine Jet Milled Nd Fe B Powders
... the Nd-rich phase is strongly related to the change in coercivity during annealing for the Nd-Fe-B ...the Nd-rich phase) in the jet-milled powders was analyzed by ...
5
Effect of Weak Magnetic Intergranular Phase on the Coercivity in the HDDR Nd Fe B Magnet
... phase. Thus, the intergranular phase is still magnetic phase. Here, assuming that the IP existing between adja- cent grains is a weak magnetic phase, and using cubic- grain anisotropy model, we study the effect of IP on ...
5
The thermal expansion coefficient of Nd-Fe-B and Sm-Co permanent magnets in the region of the Curie point
... Abstract. A dilatometric study results on the linear thermal expansion coefficient (LTEC) of Nd-Fe-B and Sm-Co permanent magnets are presented. The experimental data in the temperature range 200 − ...
5
Effect of Post-Sintering Annealing Treatment on Magnetic Properties of Some Nd Fe b Based Magnets
... A, B, and C, respectively, after annealing for 1 hr, in all the annealing ...the Nd-Fe-B based sintered magnets is almost independent of any post sintering annealing ...
10
Synthesis and Characterization of Directionally Solidified Nd- Fe-B alloys
... study of Directionally Solidified Nd-Fe-B Alloys. Synthesis is done via vacuum induction melting and casting and then by Directional Solidification furnace and characterized for structural and ...
7
Optimization and comparison of flux-concentrating Nd-Fe-B generator considering variable power factor and wind conditions for a 6MW offshore wind turbine
... of Nd-Fe-B has increased and fluctuated ...flux-concentrating Nd-Fe-B generator (where flux-concentrating characteristics helps to increase flux density in the air gap) and ...
5
Search for magnets with properties intermediate between Nd Fe B and Ferrite
... The rare-earth crisis peaked in the summer of 2011 with prices of both light and heavy rare earths reaching unprecedented levels (500 $/kg for Nd, 3000 /kg for Dy). Despite a reduction to prices of about 20% of ...
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Magnetic Domain Structure Analysis of Nd Fe B Sintered Magnets Using XMCD PEEM Technique
... A combination of X-Ray Magnetic Circular Dichroism and PhotoEmission Electron Microscopy (XMCD-PEEM) was applied to the magnetic domain analysis of Nd-Fe-B sintered magnets. The XMCD-PEEM ...
6
The thermal expansion of hard magnetic materials of the Nd-Fe-B system
... of Nd-Fe-B system, as well as to clarify the question about the influence of the residual magnetization by density and thermal expansion of the ...of Nd-Fe-B system are provided; ...
6
Transmission Electron Microscopy Study on the Grain Boundaries and Magnetic Domains in Nd–Fe–B Based Magnets
... As demonstrated in Fig. 1, the boundary structures of samples A and B appear to be different. The grain boundaries were not very smooth (actually, they were meandering when observed by high-resolution electron ...
8
Recovery of Dy from a Mixture of Nd, Fe, B and Dy by Electrolysis in Molten LiCl
... which Fe, B, Nd and Dy powders were added, then reducing the Dy ions, which were ionized from the dysprosium chloride, at the ...the Fe, B, Nd and Dy powders were added to the ...
5
Method of making permanent magnets
... an Nd--Fe--B alloy enriched in Nd and B) under conditions to produce protectively coated, rapidly solidified, generally spherical alloy particles wherein a majority of the particles are ...
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