Characterization of Melt-Spun NdFeB Magnets Prepared by Explosive Compaction
نویسندگان
چکیده
منابع مشابه
FIM-ATOM PROBE INVESTIGATION OF MELT-SPUN PERMANENT MAGNETS BASED ON NdFeB
The microstructure of Nd15Fe7,B8 in the optimum magnetic state is compared to that of overquenched and heat treated specimens using Field Ion Microscopy (FIM) and Atom Probe (AP) techniques. Apart from the hard magnetic Nd2FeI4B ( (P ) and the nonmagnetic Nd,,,Fe4B4 ( 11 ) a metastable Nd7Fe3 phase controls the magnetic properties of melt-spun NdFeB ribbons. Furthermore the influence of a parti...
متن کاملMAGNETIC VISCOSITY IN NdFeB MAGNETS
The relaxation of the magnetization is calculated for isotropic and anisotropic magnets. For NdFeB magnets, the dependence of Sv on texture, above room temperature, is roughly consistent with the model, while the NdDyFeB magnets show no dependence upon texture.
متن کاملExchange-coupled nanoscale SmCo/NdFeB hybrid magnets
Nanoscale hybrid magnets containing SmCo5 and Nd2Fe14B hard magnetic phases have been produced via a novel ‘‘in-one-pot’’ processing route. The grain size of the processed bulk composite materials is controlled below 20 nm. The refinement of the nanoscale morphology leads to effective inter-phase exchange coupling that results in single-phase like magnetic properties. Energy product of 14 MGOe ...
متن کاملMechanical response of melt-spun amorphous filaments
High-speed melt spinning of a cyclo-olefin polymer (COP) and a copolyamide (CoPA) have been performed. Differential scanning calorimetry curves of the resulting monofilaments show that they remain in an amorphous state even after hot drawing. Wide angle x-ray diffraction patterns of undrawn and drawn COP filaments show that although the material remains in an amorphous state, a degree of orient...
متن کاملCOERCIVITY MECHANISM OF MELT-SPUN Sm(Fel1Ti)
Hysteresis loops of randomly oriented grains with uniaxial anisotropy were computed on the basis of an array of 27 Wigner Seitz cells representing crystallites which interact by exchange coupling at the grain boundaries. The computed coercivity increases linearly with increasing interatomic exchange. Using the experimental anisotropy and exchange parameters for Sm(FellTi), we found 1.lo&=1.2 T ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: MATERIALS TRANSACTIONS
سال: 2003
ISSN: 1345-9678,1347-5320
DOI: 10.2320/matertrans.44.2094