Rare Earth Dispute and Trend in Development of NdFeB Anisotropic Bonded Magnets
نویسندگان
چکیده
منابع مشابه
Big Area Additive Manufacturing of High Performance Bonded NdFeB Magnets
Additive manufacturing allows for the production of complex parts with minimum material waste, offering an effective technique for fabricating permanent magnets which frequently involve critical rare earth elements. In this report, we demonstrate a novel method - Big Area Additive Manufacturing (BAAM) - to fabricate isotropic near-net-shape NdFeB bonded magnets with magnetic and mechanical prop...
متن کاملPowder Alignment System for Anisotropic Bonded NdFeB Halbach Cylinders
A Halbach cylinder, fabricated from pre-magnetized sintered NdFeB magnet segments, is proposed for the powder aligning system during the compression or injection moulding of anisotropic bonded Halbach oriented NdFeB ring magnets. The influence of leading design parameters of the powder aligning system, viz. the number of magnet segments per pole, their axial length and radial thickness, and the...
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 کاملRare earth elements and permanent magnets (invited)
Rare earth (RE) magnets have become virtually indispensible in a wide variety of industries such as aerospace, automotive, electronics, medical, and military. RE elements are essential ingredients in these high performance magnets based on intermetallic compounds RECo5, RE2TM17 (TM: transition metal), and RE2TM14B. Rare earth magnets are known for their superior magnetic properties—high inducti...
متن کاملAnalysis of Anisotropic Bonded NdFeB Halbach Cylinders Accounting for Partial Powder Alignment
An analytical technique is developed for predicting the performance of a bonded Halbach oriented anisotropic magnet, with due account of partial alignment of the NdFeB powder during injection molding. The predicted performance of a 12-pole injection molded, Halbach oriented magnet is compared with measurement.
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ژورنال
عنوان ژورنال: Journal of the Korean Magnetics Society
سال: 2012
ISSN: 1598-5385
DOI: 10.4283/jkms.2012.22.3.109