Nd-Fe-Co-V-B系交換スプリング磁石の磁気特性
Nd-Fe-Co-V-B系交換スプリング磁石の磁気特性
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Nd-Fe-Co-V-B 可交换弹簧磁铁的磁性能
DOI：
10.3379/jmsjmag.22.373
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
真季 塩澤
中科院分区：
文献类型：
--
作者：
洋 山元;真季 塩澤
采用单辊快淬法制备了NdxFe 86-xCo 8V 1B 5和NdxFe 85-xCo 8V 1B 6（x=6−9）合金带的交换弹簧磁体。研究了合金成分和退火处理对磁性能的影响。（BH）max和HcJ随Nd含量的增加而增加，而Br值略有下降。最佳制备工艺条件和部分性能如下：成分为Nd 9 Fe 76 Co 8V 1B 6，辊速为20 m/s，退火条件为675°C × 0 min，磁性能：（BH）max = 165.4 kJ/m3，HcJ = 455.4 kA/m，HcB = 423.3 kA/m，Br= 1.11 T，α（Br）= −0.067（%/°C），β（HcJ）= −0.33（%/°C），Hk/HcJ × 100 = 44.7%，Tc = 448°C。通过TEM观察，该带状物的粒径为20 ~ 30 nm。
Exchange-spring magnets of NdxFe86-xCo8V1B5 and NdxFe85-xCo8V1B6 (x=6−9) alloy ribbons were prepared by the single-roller rapid quenching method. The effects of the composition and annealing treatment on the magnetic properties were investigated. The values of (BH)max and HcJ were found to increase with the Nd content, while, the value of Br decreased slightly. The optimum preparation conditions and some properties were as follows: composition, Nd9Fe76Co8V1B6; roller speed, 20 m/s; annealing condition, 675°C × 0 min; magnetic properties: (BH)max = 165.4 kJ/m3, HcJ = 455.4 kA/m, HcB = 423.3 kA/m, Br= 1.11 T, α (Br)= −0.067 (%/°C), β (HcJ) = −0.33 (%/°C), Hk/HcJ × 100 = 44.7%, Tc = 448°C. From TEM observation, the particle size of this ribbon was determined to be 20 to 30 nm.