Nd-Fe-B magnet
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 ...
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Effect of Weak Magnetic Intergranular Phase on the Coercivity in the HDDR Nd Fe B Magnet
... consistent well with the experimental data (IP’s thickness of the HDDR Nd-Fe-B magnet is around 1 nm, and its coercivity is 1058 kA/m) reported by Nakayama et al [8]. In summary, the weak ...
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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 ...
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Optimization and comparison of flux-concentrating Nd-Fe-B generator considering variable power factor and wind conditions for a 6MW offshore wind turbine
... permanent magnet synchronous generators using rare earth ...of Nd-Fe-B has increased and fluctuated ...flux-concentrating Nd-Fe-B generator (where flux-concentrating ...
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Effects of Grain Boundary Phase on Coercivity of Dysprosium Free Rare Earth Magnet
... 17.3 at% R(Nd, Pr) showed magnetic properties of Br = 1181 mT and HcJ = 1998 kA/m. Coercivity of higher than 1990 kA/m (25 kOe) without using heavy rare-earth ele- ments is remarkably good, considering the fact ...
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Search for magnets with properties intermediate between Nd Fe B and Ferrite
... for Nd, 3000 /kg for ...relocating magnet manufacturing to China, thereby increasing the costs of raw materials for magnet manufacturers in ...novel magnet aimed at intermediate energy ...
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In situ TEM study of Nd rich phase in NdFeB magnet
... of Nd-rich phases is a HCP structure with the lattice parameters a ¼ 0:383 nm and c ¼ 0:600 nm [8], which was proposed arising from the decomposi- tion of matrix phase (Nd 2 Fe l4 B) due to ...
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Effect of Post-Sintering Annealing Treatment on Magnetic Properties of Some Nd Fe b Based Magnets
... the Nd- rich phase(s) ...the Nd-rich grain boundary phase by Ramesh et ...f.c.c. Nd-rich phase, Knoch et ...a Nd 15 Fe 77 B 8 type sintered magnet and found that the ...
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Enhanced energy product in Y Co Fe magnets intermediate between Nd Fe B and ferrite
... pressed magnet with 78% of theoretical density has an energy product of 65 kJ/m 3 ...This magnet could fill the gap between oriented ferrite (34 kJ/m 3 ) and oriented Nd-Fe-B (350 kJ/m ...
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Experimental study of the transport properties of Nd-Fe-B and Sm-Co magnets
... of magnet of brand N35M obtained in different thermal cycles are shown in Figure ...for Nd-Fe-B and Sm-Co systems, ...each magnet the results of all the heatings are fully reproduced ...
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Mössbauer Study on the Crystallization Process of α Fe/Nd2Fe14B type Nanocomposite Magnet Alloy
... A practically amorphous alloy as quenched starts to crys- tallize at 600 ◦ C in the heat-treating process, but the crystal- lized grains are too fine to be observed with the X-ray diffrac- tion method and M¨ossbauer ...
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Liquid metal extraction of Nd from NdFeB magnet scrap
... the Fe, Nd, and Mg x-rays collected from the sample. B could not be detected reliably, and the Pr and Dy known to be in the sample were ignored for this ...of Nd in the scrap, when normalized ...
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Microstructure of Nd Rich Grain Boundary Phase in Die Upset Nd Fe Co Ga B Magnet
... A schematic illustration and a low magnified SEM image of a vertical plane in the die-upset Nd-Fe-Co-Ga-B magnet are shown in Fig. 1(a) and (b), respectively. One can see that there are ...
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Method of making permanent magnets
... permanent magnet comprises atomizing a melt of a rare earth-transition metal alloy ...an Nd--Fe--B alloy enriched in Nd and B) under conditions to produce protectively coated, ...
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Application of Rotating Arms Type Permanent Magnet Motor
... permanent magnet motor to save energy and reduce energy ...permanent magnet direct current (DC) motor by using a super-capacitor rather than a ...permanent magnet synchronous motor (PMSM), permanent ...
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Synthesis and Characterization of Directionally Solidified Nd- Fe-B alloys
... permanent magnet properties. Therefore, composition richer in Nd can be studied for suppressing the formation of -Fe phase ...in Nd concentration may aid in promoting desired grain ...
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Phase Stability of an Amorphous Phase Against Electron Irradiation Induced Crystallization in Fe Based Metallic Glasses
... in Fe-Zr-B alloys is not stable under electron irradiation and electron irradi- ation induced crystallization ...in Fe-Zr-B alloys with high boron ...increasing B concentration, ...
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A Thermodynamic Modeling of the Fe Nd Sb System
... Figure 9(a) represents the predicted projection of the liquidus surfaces in the composition range 90100 at% Sb (i.e. Sb-rich corner) in the FeNdSb system, calculated using the present thermodynamic description. Figure ...
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Electron Irradiation Induced Phase Transformation in Nd2Fe14B Alloy
... compound at 104 K was different from that at 298 K. Only -Fe solid solution was formed at 104 K, while at 298 K not only it but also other compounds precipitated from an amorphous phase. As described in chapter ...
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The thermal expansion coefficient of Nd-Fe-B and Sm-Co permanent magnets in the region of the Curie point
... The experimental data on the linear thermal expansion coefficient of permanent magnets are obtained with high accuracy for the first time. The regions of magnetic phase transitions in detail are studied and the critical ...
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