| 通过添加Dy和Ga改善纳米复合永磁合金的磁性能 |
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| 引用本文： | 张敏刚,柴跃生,孙钢,郭东城,金志浩.通过添加Dy和Ga改善纳米复合永磁合金的磁性能[J].太原科技大学学报,2002,23(3):210-215. |
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| 作者姓名： | 张敏刚 柴跃生 孙钢 郭东城 金志浩 |
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| 作者单位： | 1. 太原重型机械学院材料科学与工程分院,太原,030024
2. 西安交通大学材料力学性能国家重点实验室,西安,710049 |
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| 基金项目： | 山西省自然科学基金资助项目 (2 0 0 2 10 6 7) |
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| 摘 要： | 采用快淬及热处理工艺 ,通过复合添加Dy和Ga ,制备了高磁性能的NdFeB纳米复合永磁合金。最佳条件下 ,添加Dy和Ga的合金磁性能为Jr =1.16T、Hci =5 80 .92kA/m和 (BH) max=16 2 .74kJ/m3;而不含Dy和Ga的NdFeB合金为Jr =1.18T、Hci =379.5kA/m和 (BH) max =119.5kJ/m3。X射线衍射和透射电子显微分析表明两种合金均由 2 :14 :1硬磁相和α -Fe软磁相组成。 2 :14 :1相晶粒尺寸在两合金中相当 ,但添加Dy和Ga的合金的α -Fe相晶粒尺寸和含量分别小于和低于不含Dy和Ga的NdFeB合金
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| 关 键 词： | 磁性材料 纳米结构 电子显微术 X射线衍射 显微组织 |
Improvement of Magnetic Properties of Nanocomposite Permanent Magnetic Alloys with Dy and Ga Substitutions |
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| ZHANG Min gan ,CHAI Yue sheng ,SUN Gang ,GUO Dong cheng ,JIN Zhi hao.Improvement of Magnetic Properties of Nanocomposite Permanent Magnetic Alloys with Dy and Ga Substitutions[J].Journal of Taiyuan University of Science and Technology,2002,23(3):210-215. |
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| Authors: | ZHANG Min gan CHAI Yue sheng SUN Gang GUO Dong cheng JIN Zhi hao |
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| Institution: | ZHANG Min gan 1,CHAI Yue sheng 1,SUN Gang 1,GUO Dong cheng 1,JIN Zhi hao 2 |
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| Abstract: | The Dy and Ga substituted NdFeB nanocomposite permanent magnetic alloys with high magnetic properties have been prepared by proper wheel speed of melt-spinning and post annealing treatment. Under optimal conditions, compared with the best magnetic properties of ternary NdFeB alloy of Jr = 1.18T, Hci = 379.5kA/m and ( BH) max = 119.5kJ/m3, the best magnetic properties of the alloy with Dy and Ga substitutions are Jr = 1.16T, Hci =580.5kA/m, and (BH) max = 162.7kJ/m3. The XRD and TEM results showed that each of two alloys consists of hard magnetic 2:14:1 phase and soft magnetic α-Fe phase. The grain size of 2:14:1 phase is about equal in two alloys. The grain size and content of α-Fe phase in Dy and Ga substituted alloy are finer and lower respectively. |
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| Keywords: | magnetic materials nanostructures electron microscopy X ray diffraction microstructure |
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