添加La对PrFeB薄带的结构与磁性能影响
The Effects of La-Doping on Structure and Magnetic Properties of PrFeB Ribbons
DOI: 10.12677/MS.2017.79097, PDF,    国家自然科学基金支持
作者: 姚小玉, 杨鹏程, 姚青荣：桂林电子科技大学材料科学与工程学院，广西 桂林
关键词: 快淬薄带；磁性能；微观组织；Melt-Spun Ribbon； Magnetic Property； Microstructure
摘要: 采用熔体快淬和热处理工艺制备了(Pr1−xLax)2Fe14B (x = 0.0~0.25)合金薄带，其晶体结构为四方结构(P42/mnm空间群)，晶胞参数随着La添加量的增加而增大。在不同退火温度、不同退火时间，通过VSM、SEM对薄带的磁性能和微观组织进行研究。结果发现，未掺杂La的薄带剩磁最高，为1.05 T。其中，(Pr0.9La0.1)2Fe14B合金在25 m/s快淬速度且在温度873 K下保温时间5 min时，测得的合金薄带综合性能最好。过高的晶化温度和过久的晶化时间均会影响薄带的磁性能。
Abstract: (Pr1−xLax)2Fe14B (x = 0.0 - 0.25) alloy ribbons were prepared by melt quenching and heat treatment, and its crystal structure was tetragonal structure with P42/mnm space group. And the lattice parameters increase with an increase of La concentration. The magnetic properties and mi-crostructure of the ribbons with annealed different time and temperature were studied by methods of VSM and SEM. The results show that the undoped La thin strip has the highest remanence, which is 1.05 T. Moreover, the (Pr0.9La0.1)2Fe14B alloy at the rapid quenching speed of 25m/s and the temperature at 873 K for 5 min has a best comprehensive performance. Excessive crystallization temperature and prolonged crystallization time will affect the magnetic properties of the ribbons.
文章引用：姚小玉, 杨鹏程, 姚青荣. 添加La对PrFeB薄带的结构与磁性能影响[J]. 材料科学, 2017, 7(9): 745-751. https://doi.org/10.12677/MS.2017.79097

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