Research on Compound Powder of Bonded NdFeB Magnets from Injection Molding

Wan Zhong Qin; Jie He; Wen Tong Zhao

doi:10.4028/www.scientific.net/AMR.228-229.841

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 228-229Research on Compound Powder of Bonded NdFeB...

Research on Compound Powder of Bonded NdFeB Magnets from Injection Molding

Abstract:

The injection molding of magnetic powder could cost-effectively mass-produce net shape magnets. In order to prepare the injection molding bonded NdFeB permanent magnet material with better combined properties, the effect of binder on the magnetic property, mechanical property and fluidity of injection molding magnets and its mechanism microcosmically were investigated. The effect of additives such as silicone coupling agent, compound lubricants and antioxidant on the properties of injection molding magnets are discussed. 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.

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Periodical:

Advanced Materials Research (Volumes 228-229)

Pages:

841-846

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.228-229.841

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Online since:

April 2011

Authors:

Wan Zhong Qin, Jie He, Wen Tong Zhao

Keywords:

Bonded Magnet, Composite Powder, Injection Molding, NdFeB

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