Research on Composite Powder and Magnet Properties of Bonded NdFeB Magnets

Wan Zhong Qin; Jie He; Jia Hong Meng

doi:10.4028/www.scientific.net/AMR.535-537.1314

Paper Titles

Effect of Nb Doping on Electronic and Magnetic Properties of Heusler Alloy Ti₂NiAl with Hg₂CuTi-Type Structure
p.1295

Temperature Dependent Characteristics of 1D Photonic Crystal with Defects
p.1299

A New Design of Photonic Crystal Fiber with Fattened Dispersion and Low Effective Mode Area
p.1304

Research on the Relationship between the Spray Overlap Width and the Photoresist Film Thickness and Uniformity
p.1308

Research on Composite Powder and Magnet Properties of Bonded NdFeB Magnets
p.1314

Giant Magnetoresistance in (Ni₆₀Co₃₀Fe₁₀/Cu) Trilayer Growth by Opposed Target Magnetron Sputtering
p.1319

Synthesis and Characters of Fe₃O₄/AMPS Magnetic Composite Material
p.1323

Synthesis and Luminescence Property of Poly(phenylenevinylene) with Alkoxyl Substituents under the Ultrasonic Irradiation
p.1328

Optimization of the Two Parameters of Classical Blaze Grating in Littrow Mount
p.1332

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Research on Composite Powder and Magnet Properties of Bonded NdFeB Magnets

Abstract:

The injection molding of magnetic powder could cost-effectively mass-produce net shape magnets. The manufacture technology and properties testing method of composite powder and bonded NdFeB magnets from injection molding were described in detail. The effects of content of binder, additives and magnetic powder on the magnetic property, mechanical property and fluidity of injection molding magnets were investigated. Furthermore, the effect mechanism was revealed microcosmically. The injection molding bonded magnets were prepared by using the MQP-B rapidly quenching NdFeB magnetic powder and polyamide 12. The magnetic properties are: Br=0.539T, Hcb=345.37kA/m, Hci=681.02kA/m, and (BH)max=47.37kJ/m3.