U.S.-Argentina Cooperative Research: Production of Exchange Enhanced Nd-Fe-B Based Permanent Magnets by Twin Roller Melt Spinning

这个美洲项目奖将资助爱荷华州立大学的R.William McCallum博士和阿根廷科尔多瓦国立大学的Luis Fabietti博士之间的合作研究项目。研究的重点将是交换增强型NdFeB基永磁体的加工和表征。这些磁体很有意义，因为它们是由具有高剩余磁化强度和中等矫直力的复合材料制成的。然而，它们在加工过程中的冶金障碍阻碍了它们的应用。合作者建议研究形核温度、过冷和再辉对微结构形成的影响，目的是开发有效的加工路线。改进的永磁体材料的开发是材料界非常感兴趣的话题，也是对高性能永磁体材料巨大的经济潜力的浓厚兴趣。研究团队将技能和经验以及各种设施完美地结合在一起。ISU的Ames实验室将能够进行阿根廷没有的微观结构表征，而美方将在阿根廷获得双辊熔融纺丝设备，从而使合作者能够扩大可以研究的材料范围。。***

9872792McCallumThis Americas Program award will fund a cooperative research project between Drs. R. William McCallum, Iowa State University (ISU), and Luis Fabietti, Universidad Nacional de Cordoba, Argentina. The focus of the research will be on the processing and characterization of exchanged-enhanced NdFeB-based permanent magnets. These magnets are of fundamental interest because they are made out of composites with high remnant magnetization and moderate coercivity. Yet, their application has been hindered by metallurgical obstacles in their processing. The collaborators propose to study the effect of nucleation temperature, undercooling and recalescence on the formation of microstructures, with the aim of developing effective processing routes. The development of improved permanent magnet materials is a topic of major interest to the materials community, and is also of strong interest in regards to the large economic potential of high performance permanent magnet materials. The team of researchers brings together an excellent combination of skills and experience, as well as of facilities. The Ames Laboratory in ISU will enable microstructural characterization not available in Argentina, while the US side will gain access to twin roller melt spinning apparatus in Argentina, thus enabling the collaborators to expand the range of materials that can be investigated. . ***