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No.4(pp.97-127)

Home > Issues > Volume 9 (2004) > No.4(pp.97-127)

Study on the Interaction of Compound Bonded Magnets

Journal of Magnetics, Volume 9, Number 4, 31 Dec 2004, Pages 105-108

Ying Chang*

(Central Iron and Steel Research Institute, School of materials and Metallurgy, Northeastern University), Nuo Ma(Central Iron and Steel Research Institute), Xiaojun Yu(Central Iron and Steel Research Institute), Fazeng Lian(School of materials and Metallurgy, Northeastern University), Wei Li(Central Iron and Steel Research Institute)

Abstract

The attempt for the addition of double-phase nanocomposite Nd₂Fe₁₄BFe₃B powders, respectively, into several RE₂Fe₁₄B (RE=Pr, Nd) powders with high magnetic properties was carried out. The powders were compounded and compressed to take shape bonded magnets. By means of investigating the variation of compound magnet B_r, the interaction between magnetic powders was revealed. The result shows that not chemical just but physical interaction exists between elements. The compound effect of Nd₂Fe₁₄BFe₃B-ferrite bonded magnets was detailed studied. The functional relation was revealed between magnetic properties and ferrite content. That is Y=5.42x²-11.34x+6.62. The variation of _iH_ctemperature coefficient β_iHcwith ferrite content was investigated. Following the ferrite content increased, β_iHcand h_irrwere obviously decreased, compression-resistant strength was enhanced.

Keywords: Nanocomposite; Bonded magnets; Nd_2Fe14B; Fe_3B; Rare earth

DOI:

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