Development of novel permanent magnet designs for electric vehicle motors

在许多国家，汽油驱动的汽车将只被允许再使用几年，因此，人们强烈地推动汽车行业“电气化”。这带来了许多挑战，其中一个重要的挑战是如何有效地利用磁性材料，而磁性材料是大多数电机的核心。目前可用的这类材料是以Nd-Fe-B为基础，使用昂贵的添加剂，如Dy来提高磁稳定性。随着电气化变得越来越普遍，为了避免成本和供应问题，需要新的磁性材料，这个项目将通过指导实验来寻找这些材料。根据元素混合产生合金的可能性，以及利用目前对磁性行为的理解来排除某些系统，可以确定合适的成分。随后，高通量方法可以用来快速筛选许多不同的成分，在短时间内创建和评估许多材料。这种方法将使用谢菲尔德通过亨利·罗伊斯研究所提供的先进设备来开发，并应用于鉴定有希望的组合物。然后将对它们进行更详细的检查，以完善它们的组成和微观结构，工业合作伙伴将促进更大规模的测试和验证。

Petrol driven cars will only be permitted for a few more years in many countries, and as a result there is a strong drive to "electrify" the automotive sector. This presents many challenges, an important one of which is to be efficient in the magnetic materials which are the heart of most electric motors. Such materials as are available currently are based upon Nd-Fe-B, with expensive additives such as Dy used to improve the magnetic stability. To avoid problems of cost and supply as electrification becomes more widespread, new magnetic materials are required, and this project will seek to discover these through guided experiments.Candidate compositions can be identified based on the likelihood of elements to mix to produce an alloy and using current understanding of magnetic behaviour to exclude certain systems. Following this, high throughput methods can be used to screen many different compositions rapidly, creating and assessing many materials in a short space of time. Such methods will be developed using the advanced equipment available at Sheffield through the Henry Royce Institute, and applied to identify promising compositions. These will then be examined in greater detail to refine their composition and microstructure, with the industrial partner facilitating testing and validation at a larger scale.