The attempt for the addition of double-phase nanocomposite Nd_2Fe_ 14B/Fe_3B powders into several RE_2Fe_ 14B (RE=Pr, Nd) powders with high magnetic properties was carried out. The powders were compounded and compress...The attempt for the addition of double-phase nanocomposite Nd_2Fe_ 14B/Fe_3B powders into several RE_2Fe_ 14B (RE=Pr, Nd) powders with high magnetic properties was carried out. The powders were compounded and compressed to take shape of 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 but physical interaction exists between elements. The compound effect of Nd_2Fe_ 14B/Fe_3B-ferrite bonded magnets was detailedly studied. The functional relation was revealed between magnetic properties and ferrite content. That is Y=5.42x2-11.34x+6.62(x: ferrite content, Y: (BH)_m). The variation of _jH_c temperature coefficient β_ jHc with ferrite content was investigated. Following the ferrite content increase, β_ jHc and h_ irr are obviously decreased, and compression-resistant strength is enhanced.展开更多
文摘The attempt for the addition of double-phase nanocomposite Nd_2Fe_ 14B/Fe_3B powders into several RE_2Fe_ 14B (RE=Pr, Nd) powders with high magnetic properties was carried out. The powders were compounded and compressed to take shape of 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 but physical interaction exists between elements. The compound effect of Nd_2Fe_ 14B/Fe_3B-ferrite bonded magnets was detailedly studied. The functional relation was revealed between magnetic properties and ferrite content. That is Y=5.42x2-11.34x+6.62(x: ferrite content, Y: (BH)_m). The variation of _jH_c temperature coefficient β_ jHc with ferrite content was investigated. Following the ferrite content increase, β_ jHc and h_ irr are obviously decreased, and compression-resistant strength is enhanced.
