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

美阿根廷合作研究：双辊熔融纺丝生产交换增强型Nd-Fe-B基永磁体

• 批准号: 9872792
• 负责人: R. William McCallum
• 金额: $ 1.06万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-11-01 至 2001-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9872792&HistoricalAwards=false
• 关键词: U.S.; Argentina; Cooperative; Research; Production

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. . ***

9872792麦卡勒姆这个美洲计划奖项将资助R. William McCallum，爱荷华州州立大学（ISU），Luis Fabietti，阿根廷科尔多瓦国立大学。 研究的重点将是交换增强NdFeB基永磁体的加工和表征。 这些磁体具有根本的意义，因为它们由具有高剩余磁化强度和中等矫顽力的复合材料制成。 然而，它们的应用受到其加工中的冶金障碍的阻碍。 合作者建议研究成核温度、过冷度和吸热对微结构形成的影响，目的是开发有效的加工路线。 改进的永磁材料的开发是材料界主要感兴趣的主题，并且对于高性能永磁材料的巨大经济潜力也具有强烈的兴趣。 研究人员团队汇集了技能和经验以及设施的优秀组合。 ISU的艾姆斯实验室将能够进行阿根廷没有的微观结构表征，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以研究的材料范围。. ***