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首页> 外文会议>The 10th International Conference on Ferrites（2008中国国际铁氧体研讨会）论文集 >Effect of Mg Stearate Addition on Magnetic Properties of Ba-System W-Type Ferrite Magnets
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Effect of Mg Stearate Addition on Magnetic Properties of Ba-System W-Type Ferrite Magnets

机译：硬脂酸镁对Ba系W型铁氧体磁体磁性能的影响

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摘要

An experiment was carried out to investigate of the effect of Mg Stearate as a reducing agent on the magnetic and physical properties of anisotropic BaFe2-W type ferrite magnets. It was found that the magnetic properties of BaO-8.5Fe2O3 were improved by adding 0.3 wt% of Mg Stearate, 0.5 wt% of SiO2, and 0.5 wt% of CaO together. The optimum conditions for making magnets were as follows; semisintering condition: 1350 °C×4.0 h in nitrogen gas atmosphere, drying condition: 180 °C×2.0 h in air, sintering condition: 1180°C×1.5 h in nitrogen gas atmosphere. Magnetic and physical properties of a typical sample were Jm= 0.48 T, Jr=0.43 T,Hcj=172.2 kA/m, HcB= 162.7 kA/m, (BH)max=33.7 kJ/m3, and Tc= 496°C. The lattice constants of this compound were a=5.875×10-10 m, c=32.47×10-10 m, and c/a=5.527.
机译：进行了实验，以研究硬脂酸镁作为还原剂对各向异性BaFe2-W型铁氧体磁铁的磁性能和物理性能的影响。发现通过将0.3重量％的硬脂酸镁，0.5重量％的SiO 2和0.5重量％的CaO一起添加，改善了BaO-8.5Fe 2 O 3的磁性能。制作磁铁的最佳条件如下。半烧结条件：在氮气气氛中为1350°C×4.0 h，干燥条件：在空气中为180°C×2.0 h，烧结条件：在氮气气氛中为1180°C×1.5 h。典型样品的磁性能和物理性能为Jm = 0.48 T，Jr = 0.43 T，Hcj = 172.2 kA / m，HcB = 162.7 kA / m，（BH）max = 33.7 kJ / m3和Tc = 496°C。该化合物的晶格常数为a ＝ 5.875×10-10m，c ＝ 32.47×10-10m，c / a ＝ 5.527。

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