High throughput screening for novel low cost Fe-based permanent magnets

新型低成本铁基永磁体的高通量筛选

• 批准号: 261704-2013
• 负责人: Medraj, Mamoun
• 金额: $ 1.77万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=571123
• 关键词: throughput; screening; novel; low; cost

This project aims at identifying, characterizing and developing low-cost Fe-based permanent magnets for high temperature applications. Such magnets are needed for the automotive industry, mainly for the electric motors, and for the power generation industry. This research will also benefit a wide range of industries such as aeronautical, motor production, electronic equipment and wind energy. Permanent magnets are also necessary for components used in national defense activities. The magnets that satisfy to some extent the current technological demands contain significant amounts of expensive rare earth elements. More importantly, currently there is almost complete dependence on foreign sources to supply these rare earth metals. In this project, the use of these metals will be minimized and the expensive rare earths (Nd, Dy and Sm) will be replaced with a more abundant and less expensive element such as Ce. The search for new magnetic materials will be based on the high-throughput screening of multicomponent metallic systems. This method is a unique expertise of the applicant's group that has been used to discover new intermetallic phases with specific physical or mechanical properties. The method is based on combination of thermodynamic calculations and diffusion couples experiments. The preliminary thermodynamic calculations allow narrowing the area of interest that significantly reduces the number of experiments. The experimental part is based on the preparation and analysis of multicomponent diffusion couples and diffusion multiples combined with key alloys. Magnetic compounds will be identified using Magnetic Force Microscopy. The feasibility of this methodology has been demonstrated by our research group on a typical magnetic material system (Fe-Nd-B) and proved to provide the necessary information in an efficient and timely manner. In this project, these steps will be followed for a wide range of systems.

该项目旨在识别，表征和开发用于高温应用的低成本永久磁铁。汽车行业（主要用于电动机和发电行业）需要此类磁铁。这项研究还将受益于广泛的行业，例如航空，汽车生产，电子设备和风能。对于国防活动中使用的组件也需要永久性磁铁。在某种程度上满足当前技术需求的磁铁包含大量昂贵的稀土元素。更重要的是，目前几乎完全依赖外国来源来提供这些稀土金属。在这个项目中，将使用这些金属的使用最小化，而昂贵的稀土（ND，DY和SM）将被诸如CE等更丰富且较便宜的元素所取代。 对新磁性材料的搜索将基于多组分金属系统的高通量筛选。该方法是申请人组的独特专业知识，该专业知识已用于发现具有特定物理或机械特性的新的金属间阶段。该方法基于热力学计算和扩散夫妻实验的组合。初步的热力学计算允许缩小感兴趣的区域，从而大大减少了实验数量。实验部分是基于多组分扩散夫妻和扩散倍数与关键合金的扩散倍数的制备和分析。将使用磁力显微镜鉴定磁化合物。 我们的研究小组已经在典型的磁性材料系统（FE-ND-B）上证明了这种方法的可行性，并证明可以有效，及时地提供必要的信息。在这个项目中，将遵循各种系统的步骤。