SBIR Phase I: Nanostructured High-Strength Magnet for Automotive Applications

SBIR 第一阶段：用于汽车应用的纳米结构高强度磁体

• 批准号: 1647943
• 负责人: Matthew Holcomb
• 金额: $ 21.82万
• 依托单位: Grid Logic Incorporated
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-12-15 至 2017-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1647943&HistoricalAwards=false
• 关键词: SBIR; Phase; Nanostructured; Strength; Magnet

The broader impact/commercial potential of this Small Business Innovation Research Phase I project is to develop an improved permanent magnet that will allow cost reduction and/or vehicle weight reduction in automotive applications. This permanent magnet product will be fabricated from samarium cobalt magnetic particles that are encapsulated with a nanometer scale coating of iron or cobalt metal. Bonded permanent magnets manufactured using these nanostructured powders will have energy products at least 30% greater than samarium cobalt alone. This increase in performance means that the same motor can use 20% less magnetic material resulting in cost savings, weight savings, and reduction in the use of the critical rare earth element samarium. In addition, compact high-performance permanent magnets will help the United States reduce petroleum consumption and greenhouse gas emission with no adverse effect on vehicle performance.The technical objective in this Phase I research project is to validate the feasibility of achieving a high energy product nanostructured permanent magnet powder by coating commercially available samarium cobalt particles with nanometer-scale shells of iron or cobalt. Nanostructured permanent magnet powders, comprised of micron-size hard magnetic core particles surrounded by nanometer-scale soft magnetic shells, show promise as a replacement for high energy product rare earth permanent magnets. Commercial production of these materials, however, has proved problematic due to the difficulty of handling and coating ultrafine powders while maintaining clean core-shell interfaces. In this Phase I project, magnetic nanostructured powders will be fabricated using powder encapsulation technology has been shown to enable the production of nanometer-scale metallic shell layers on micron-sized metallic core particles in an ultra-clean atmosphere controlled environment. Using these powders, proof-of-concept bonded permanent magnets will be manufactured and evaluated for potential use in simple motors that utilize bonded samarium cobalt or neodymium iron boron magnets. High performance magnetic core-shell powders produced with this particle encapsulation technology will demonstrate the possibility of achieving reduced rare-earth-content high energy product permanent magnets and lay the foundation for commercial-scale production of these materials.

这个小型企业创新研究第一阶段项目的更广泛的影响/商业潜力是开发一种改进的永磁体，可以降低汽车应用中的成本和/或减轻车辆重量。这种永磁体产品将由钐钴磁性颗粒制成，这些磁性颗粒用铁或钴金属的纳米级涂层封装。使用这些纳米结构粉末制造的粘结永磁体将具有比单独的钐钴高至少30%的能量积。性能的提高意味着相同的电机可以使用减少20%的磁性材料，从而节省成本，减轻重量，并减少关键稀土元素钐的使用。此外，紧凑型高性能永磁体将帮助美国减少石油消耗和温室气体排放，而不会对车辆性能产生不利影响。本研究项目第一阶段的技术目标是验证通过在市售钐钴颗粒上涂覆纳米级铁或钴壳来实现高能产品纳米结构永磁体粉末的可行性。纳米结构永磁体粉末由纳米级软磁壳包围的微米级硬磁芯颗粒组成，显示出作为高能产品稀土永磁体的替代品的前景。然而，这些材料的商业生产已经被证明是有问题的，这是由于难以处理和涂覆超细粉末，同时保持清洁的核-壳界面。在这个第一阶段项目中，磁性纳米结构粉末将使用粉末封装技术制造，该技术已被证明能够在超洁净的气氛控制环境中在微米级金属核颗粒上生产纳米级金属壳层。使用这些粉末，概念验证粘结永磁体将被制造和评估，用于利用粘结钐钴或钕铁硼磁体的简单电机的潜在用途。用这种颗粒包封技术生产的高性能磁性核壳粉末将证明实现降低稀土含量的高能产品永磁体的可能性，并为这些材料的商业规模生产奠定基础。