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

9872792 mccallum美洲计划奖将资助博士之间的合作研究项目。R. William McCallum，爱荷华州立大学（ISU）和Luis Fabietti，阿根廷国立科尔多瓦大学。研究的重点将放在交换增强钕铁硼基永磁体的加工和表征上。这些磁体是基本的兴趣，因为它们是由高残余磁化和中等矫顽力的复合材料制成的。然而，它们的应用一直受到冶金工艺障碍的阻碍。作者建议研究成核温度、过冷和再回对微观组织形成的影响，以开发有效的加工路线。改进永磁材料的发展是材料界非常感兴趣的话题，高性能永磁材料的巨大经济潜力也引起了人们的强烈兴趣。研究人员团队汇集了技能和经验以及设施的优秀组合。ISU的Ames实验室将实现阿根廷无法实现的微观结构表征，而美国方面将获得阿根廷的双辊熔融纺丝设备，从而使合作者能够扩大可研究的材料范围。＊＊＊

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. . ***