Grain Refined Nanocomposites: A Study on the Effect of Additives on Microstructure and Magnetic Properties of Permanent Magnets

晶粒细化纳米复合材料：添加剂对永磁体微观结构和磁性能影响的研究

• 批准号: 1029780
• 负责人: Sanjay Mishra
• 金额: $ 29.85万
• 依托单位: University of Memphis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1029780&HistoricalAwards=false
• 关键词: Grain; Refined; Nanocomposites; Study; Effect

The research objective of this award is to develop understanding of the effect of grain refinement on the overall magnetic performance of composite permanent magnets. The research approach is to systematically add immiscible atoms in the composites and concomitantly evaluating the structural-magnetic property relationship in the magnets. The research will result in developing next generation high strength and high operating temperature magnets. Deliverables include identifying type of additives and understanding the fundamental mechanism governing the magnetic behavior of the magnets, evaluating synthesis process which can be adapted in the synthesis of other composite magnets, setting up synthesis and characterization instrumentation, modeling and analysis tools, documentation and dissemination of results, materials science education, and research experience to range of students including minority and underprivileged students.If successful, the understanding derived from this project will help create cost effective, light weight, high strength, and high operating temperature permanent magnets. Example applications of such magnets include light weight motors and generators for air and space vehicles and ground transpiration including cars and rails. This will also mitigate some of the ever-escalating power needs in both current and future technologies needing light weight and energy efficient devices. Unequivocally the power dense magnets will aid in minimizing carbon footprint as well. The results will be disseminated to allow research community to develop novel high performance magnets. The active collaboration with other institutions will broaden understanding and appreciation for the research subject. Graduate, undergraduate, minority, and REU students will benefit through classroom instruction and involvement in the research. Students from local colleges will have an opportunity to participate in high-end research activity.

该奖项的研究目标是了解晶粒细化对复合永磁体整体磁性能的影响。研究方法是系统地在复合材料中加入不混溶原子，并同时评估磁体的结构-磁性能关系。该研究将导致开发下一代高强度和高工作温度磁体。这些内容包括识别添加剂的类型和理解控制磁体磁行为的基本机制，评估可用于合成其他复合磁体的合成过程，建立合成和表征仪器，建模和分析工具，记录和传播结果，材料科学教育，和研究经验的范围内的学生，包括少数民族和贫困学生。如果成功，从这个项目中获得的理解将有助于创造成本效益，重量轻，高强度，高工作温度的永磁体。这种磁体的示例性应用包括用于航空和航天器的轻质电动机和发电机以及包括汽车和轨道的地面蒸发。这也将缓解当前和未来技术中不断升级的电力需求，这些技术需要重量轻且节能的设备。毫无疑问，功率密集的磁铁将有助于减少碳足迹以及。研究结果将被传播，以使研究界能够开发新型高性能磁体。与其他机构的积极合作将扩大对研究主题的理解和欣赏。研究生，本科生，少数民族和REU学生将受益于课堂教学和参与研究。来自当地大学的学生将有机会参加高端研究活动。