| Review of melt-spun RE-Fe-B powders and their bonded and fully-dense magnets for automotive applications Zhongmin Chen1; 1NEO PERFORMANCE MATERIALS (SINGAPORE) PTE LTD, Singapore, Singapore; PAPER: 156/SISAM/Regular (Oral) SCHEDULED: 16:45/Thu. 24 Oct. 2019/Dr. Christian Bernard ABSTRACT: RE-Fe-B permanent magnets have been increasingly used for motor applications in automotive industry. Higher performance magnets are always in demand as they enable the motor to achieve high efficiency, high power density and smaller size. It is well known that rapid solidification technology has the advantage of producing nanoscale fine-grained RE-Fe-B material and therefore enabling higher magnetic performance. For past several years, melt-spun RE-Fe-B powders and their bonded magnets and fully-dense magnets have found more and more applications in the automotive industry. In this presentation, we will review Magnequench’s latest R&D efforts in RE-Fe-B product development for automotive applications. These include isotropic melt-spun MQP and MQU powders, and anisotropic MQA powders. MQ1 bonded magnets made from MQP or MQA powders, and fully-dense MQ2 and MQ3 magnets made from MQU powders will also be discussed. An emphasis will be put on their processing-microstructure-performance relationships, especially microstructure uniformity and its importance on magnetic performance. |
