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| 高压技术对烧结NdFeB性能和微观结构的影响 | |
| 引用本文： | 唐 杰,张 林,魏成富,杨梨容,赵导文.高压技术对烧结NdFeB性能和微观结构的影响[J].稀有金属材料与工程,2012,41(6):1060-1064. |
| 作者姓名： | 唐 杰 张 林 魏成富 杨梨容 赵导文 |
| 作者单位： | 1. 中国工程物理研究院,四川绵阳621900;绵阳师范学院,四川绵阳621000 2. 中国工程物理研究院,四川绵阳,621900 3. 绵阳师范学院,四川绵阳,621000 4. 绵阳西磁磁电有限公司,四川绵阳,621000 |
| 基金项目： | 四川省科技厅科技支撑计划 (2011SZZ029, 2012JY0045)；四川省教育厅重点项目 (10ZA060, 11ZA161)；绵阳市科技局重点项目(10Y002-4)；绵阳师范学院学科专项 (2011C02) |
| 摘 要： | 采用高压和常规压制方式制备了烧结(PrNd)33Al0.7Nb0.6Cu0.1B1.05Febal(质量分数)永磁体,利用扫描电镜、金相显微镜和振动样品磁强计及维氏硬度计对比研究了两种压制方式对样品微观组织和性能的影响。结果发现:与常规压制方式制备样品相比,1.8GPa压强成型制备样品的Hcj和(BH)max分别提高了133kA.m-1和0.6kJ.m-3;而3.6GPa压强成型制备样品的Hcj和(BH)max分别提高了120.3kA.m-1和3.2kJ.m-3。高压样品的主相晶粒较细小,富稀土相分布均匀合理,但过高的压强将使其维氏硬度降低。 |
| 关 键 词： | 烧结NdFeB磁体 高压技术 微观结构 性能 晶粒 |
| 收稿时间： | 6/8/2011 12:00:00 AM |
Effects of High Pressure Process on the Microstructure and Performances of NdFeB Magnets |
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| Tang Jie,Zhang Lin,Wei Chengfu,Yang Lirong and Zhao Daowen.Effects of High Pressure Process on the Microstructure and Performances of NdFeB Magnets[J].Rare Metal Materials and Engineering,2012,41(6):1060-1064. | |
| Authors: | Tang Jie Zhang Lin Wei Chengfu Yang Lirong and Zhao Daowen |
| Affiliation: | China Academy of Engineering Physics (CAEP), Mianyang 621900, China |
| Abstract: | The sintered permanent magnets of (PrNd)33Al0.7Nb0.6Cu0.1B1.05Febal (wt%) were prepared by the high pressure and conventional molding processes. The performances and microstructure were discussed by metalloscope, VSM, SEM and so on. The results show that the Hcj and (BH)max of the samples by high pressure process (1.8 and 3.6 GPa) are much higher (133 kA·m-1 and 0.6 kJ·m-3; 120.3 kA·m-1 and 3.2 kJ·m-3) than those by the conventional pressure process. On the other hand, the former crystalline grains of NdFeB phase are thin and small. In addition, the former Nd-rich phases are homogeneous and reasonable, but too high pressure will decrease Vickers hardness of samples |
| Keywords: | sintered NdFeB magnet high pressure process microstructure performance crystalline grains |
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