PFI:AIR - TT: Sustainable Permanent Magnets For Advanced Applications

该PFI：AIR技术翻译项目专注于定向开发等原子FeNi（铁镍）的晶体结构，微观结构和磁性结构，以创建完全由易于获取的地球丰富元素组成的先进永磁体。先进的永磁体是无数设备和机器的基础，包括混合动力/电动汽车、直驱风力涡轮机、电动机和发电机，因此在技术和工业上都很重要。 目前，先进的永磁体需要稀土金属，在全球供应链的现状下，稀土金属供应有限。具有化学有序的四体结构的等原子FeNi，被称为四体，仅在经过非常长的冷却时间的选定陨石中自然发现，并已被证实具有优异的永磁性能。该PFI：AIR技术翻译项目将提供基于现有工业冶金技术的概念验证合成和处理协议，以大大加快四硫锑铅矿的形成，达到工业相关的时间尺度。由合成的四钛铁矿制成的末级磁体不仅具有接近最佳稀土基磁体特征的66%的最大理论能量积，而且还有望表现出超过最佳钕（Nd）基磁体的高温性能。此外，补充成本和供应链可用性方面的明显优势，这种磁体将表现出上级耐腐蚀性和相关的延长的技术寿命。 该项目将提供对有利于四斜磷铁矿形成所需的条件和过程的深入了解，并在该材料从研究实验室过渡到商业生产和应用时为该材料的微观结构方面提供信息。特别是，技术，同时适用于控制处理参数，如温度，应变和磁场，将被设计和实施。将进行运输测量协议的并行开发，以确定从母合金形成所需相的最早阶段。此外，参与该项目的人员（一名博士后助理，一名研究生和本科合作教育实习生）将获得永磁材料科学，工程和技术方面的经验，包括工业和全球供应链的观点。该项目由位于马萨诸塞州伯灵顿的罗杰斯创新中心的罗杰斯公司参与。在康涅狄格州罗杰斯的罗杰斯总部，在东北大学的学术研究，行业知识和研究的商业化之间建立更紧密的联系。通过这种方式，将寻求解决清洁能源和安全与保障全球挑战的材料解决方案，促进和加速从研究发现到商业现实的转化。

This PFI: AIR Technology Translation project focuses on directed development of the crystal structure, microstructure and magnetic structure of equiatomic FeNi (Iron-Nickel) to create an advanced permanent magnet entirely comprised of easily accessible, earth-abundant elements. Advanced permanent magnets underlie operation of myriad devices and machines, including hybrid/electric vehicles, direct-drive wind turbines, motors and generators and thus are technologically and industrially important. At present, advanced permanent magnets require rare-earth metals that are in limited supply in the current situation of the global supply chain. Equiatomic FeNi with the chemically ordered tetragonal structure, known as tetrataenite, is found naturally only in selected meteorites subjected to extraordinarily long cooling periods and has been confirmed to exhibit excellent permanent magnetic properties. This PFI: AIR Technology Translation project will deliver enabling proof-of-concept synthesis and processing protocols, based on existing industrial metallurgical techniques, to greatly accelerate the formation of tetrataenite to industrially-relevant timescales. The end-stage magnets made from the synthesized tetratenite will not only feature maximum theoretical energy products that approach 66% of those characterizing the best rare-earth-based magnets, but are also anticipated to exhibit high-temperature performance exceeding that of the best neodymium (Nd) based magnets. In addition, complementing clear advantages in cost and supply chain availability, such magnets would exhibit superior corrosion resistance and associated extended technological lifetimes. This project will provide enabling insight into the conditions and processes necessary to favor the formation of tetrataenite, as well as inform microstructural aspects of this material as it transitions from the research lab to commercial production and application. In particular, techniques to simultaneously apply controlled processing parameters, such as temperature, strain and magnetic field, will be designed and implemented. Parallel development of transport measurement protocols to identify the earliest stages of desired phase formation from the parent alloy will be conducted. In addition, personnel involved in this project (one post-doctoral associate, one graduate student and undergraduate cooperative education internship students) will receive experiences in the science, engineering and technology of permanent magnetic materials, including industrial and global supply chain perspectives.This project engages Rogers Corporation at the Rogers Innovation Center in Burlington, Mass. and at Rogers Headquarters in Rogers, Conn., to build closer linkages between academic research at Northeastern University, industry know-how, and commercialization of research. In this manner materials solutions to address global challenges for clean energy and safety and security will be pursued, facilitating and accelerating translation from research discovery toward commercial reality.