雾化NdFeB合金粉末的组织结构与磁性能

详细信息

MICROSTRUCTURE AND HARD MAGNETIC PROPERTIES OF ATOMIZED Nd-Fe-B ALLOY POWDER

摘要: 用8MPa的Ar气雾化制取NdFeB合金粉末,光学金相观察和X射线衍射分析表明,粉末主要由Nd₂Fe₁₄B相组成。粉末具有一定的矫顽力,回火处理后矫顽力明显提高。不同粒度的粉末矫顽力存在差异,粉末越细其矫顽力越高。粉末初始磁化曲线与烧结NdFeB磁体相似。
- 气体雾化制粉 /
- 合金粉 /
- 磁学性能 /
- 显微组织
Abstract: Two alloys were atomized by 8. OMPa Argon gas. Optical microstructure observation and X-ray diffraction analysis authenticated that the obtained powder is mainly composed of a tetragonal Nd₂Fe₁₄B phase. The tHe value of the powder is relatively higher compared with that of the powder from pulverizing as-cast Nd-Fe-B alloy bulk,and gives rises after annealing at 973K for an hour, The iHc value varies with the rang of particle diameter, the more finer the powder particles are, the more higher the tHe value is. The initial magnetization behavion of the powder is analogous to that of conventional as-cast magnets.
- gas atomized powder /
- magnetic property /
- alloyed powder