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http://dx.doi.org/10.4283/JMAG.2004.9.4.105

Study on the Interaction of Compound Bonded Magnets

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

Publication Information

Journal of Magnetics / v.9, no.4, 2004 , pp. 105-108 More about this Journal

Abstract

The attempt for the addition of double-phase nanocomposite $Nd_2Fe_{14}BFe_3B$ powders, respectively, into several $RE_2Fe_{14}B$ (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 $Nd_2Fe_{14}BFe_3B$ -ferrite bonded magnets was detailed studied. The functional relation was revealed between magnetic properties and ferrite content. That is $Y = 5.42 x^2 -11.34x + 6.62$ . The variation of $_iH_c$ temperature coefficient ${\beta}_{iHc}$ with ferrite content was investigated. Following the ferrite content increased, ${\beta}_{iHc}$ and $h_{irr}$ were obviously decreased, compression-resistant strength was enhanced.

Keywords

Nanocomposite; Bonded magnets; $Nd_2Fe_{14}B$ ; $Fe_3B$ ; Rare earth;

Citations & Related Records

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