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Showing 1 to 11 of 11 for “"NdFeB"”.
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The effect of Zr and ZrB2 additions to NdFeB alloys
… the excessive ZrB2-type needles formed in the NdFeB alloy may have a deleterious effect on the magnetic properties. However, the coercivity of the NdFeB sintered magnets can be improved to some extent by addition of Zr or ZrB2 to the composition Nd12.68Fe77.91-80.91B6.41-8.41Zr0-1 (at%) due to …
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The computer-aided design and analysis of impulse magnetizing fixtures.
… relative merits of magnetizing the anisotropic NdFeB magnet of a brushless D.0 motor at various stages during the motor production. A further case study on the magnetization of an isotropic bonded NdFeB multipole rotor highlights the additional considerations that arise in the design of …
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Radiation Damage in Permanent Magnet Lenses
… and should be used as a replacement for NdFeB in magnetic lenses for high-dose proton radiography.
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Análisis y optimización de modelos de rotor de motor síncrono para vehículos híbridos con la incorporación de nuevos materiales magnéticos
… determinar una alternativa viable a los imanes NdFeB sinterizados, monopolizados por China, y por otro lado se estudian los distintos tipos de motores eléctricos más idóneos para su aplicación en vehículos eléctricos. Una vez determinado que los motores síncronos de imanes permanentes son …
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AI-based hybrid optimisation of multi-megawatt scale permanent magnet synchronous generators for offshore wind energy capture
… material mass ('()$"*+) in the generator, i.e. NdFeB PM mass (',-), copper mass (').), and active steel in the stator lamination and rotor core ('/0$%&1$++&), while maintaining a pmsg efficiency (23456 ≥ 97%). The initial stage saw a reduction in initial cost by 25.5%, while maintaining an …
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Hybrid Induction Drive for a Magnetically Levitated Control Moment Gyroscope
… diameter, diametrically magnetized grade N42 NdFeB rotor. A permanent magnet drive is used for vertical translation control, and an induction drive is used to spin the magnet about its axis of magnetization. Future work can then add more axes of permanent magnet drives to enable control about …
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A Magneto-Gravitational Neutron Trap for the Measurement of the Neutron Lifetime
… an experiment that uses a bowl-shaped array of NdFeB magnets to confine neutrons without material wall interactions. The trap shape is designed to rapidly remove higher energy UCN that might slowly leak from the top of the trap, and can facilitate new techniques to count surviving UCN within the …
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Porous Carbon Fiber Functionalization and Thermochemical Degradation of Polystyrene-based Plastics for Resource Recovery
… PCF was developed. To dissolve REE in NdFeB magnets, citrate-assisted leaching was developed and achieved over 90% leaching efficiency, reducing the use of mineral acid. A block copolymer-based PCF with high surface area and well-controlled porous structure was synthesized and …
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Effect of melt convection on microstructure evolution of peritectic Nd-Fe-B and Ti-Al alloys
In dieser Arbeit wurde der Einfluss der Schmelzkonvektion auf das erstarrende Gefüge von peritektischen Nd-Fe-B – und TiAl-Legierungen mit Hilfe neuartiger Methoden untersucht. Da die magnetischen und mechanischen Eigenschaften dieser technisch relevanten Legierungen stark vom Gefüge und …
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Mikrotextur und magnetische Mikrostruktur in Hartmagneten aus (Nd,Pr)2Fe14B-Verbindungen
In der vorliegenden Arbeit werden die Zusammenhänge zwischen der magnetischen Mikrostruktur und der Ausrichtung der Kristallite, sowohl in Sintermagneten als auch in feinkristallinen, warmumgeformten Magneten auf Nd2Fe14B- und Pr2Fe14B-Basis, untersucht. Die EBSD-Technik (electron backscatter …
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A Permanent Magnetic Dipole Reaction Sphere Actuator for Spacecraft Attitude Control
… in) diameter, permanently axially magnetized, NdFeB (Grade 42) sphere (K&J Magnetics SX8) with a mass of 0.22 kg and a remanence of 1.22 T. The rotor can translate up to 1.0 mm from center and rotate about the 2 axes orthogonal to its magnetization axis as the coils cannot generate torque about …