Permanent NdFeBCo magnets are produced by resistance sintering, which is a recent approach in the field of powder metallurgy. Classified as an electrical current assisted sintering (ECAS) process, its ultrafast characteristics enable quick densification, in the order of hundreds of milliseconds, which is considerably shorter than in conventional sintering, where up to several hours are required. Furthermore, no admixed powder lubricant is required, thus reducing contaminations and increasing effective density. By optimization of the electrical current density, sintering time and compaction pressure, magnetic discs with up to 97% relative density are presented. High-energy impact ball milling of the particular powder is shown to be important for subsequent magnetization. Sieve analysis shows the influence of the ball milling on the starting powder before sintering. Final properties are evaluated by hardness indentation, SEM and XRD analyses. The magnetic properties are evaluated and compared to both sintered and bonded commercial Nd magnets. The obtained magnetic properties are furthermore in accordance with the technical datasheet of the original powder, meaning that optimal properties are achieved by resistance sintering and magnetization. Finally, for the magnets to be suitable for commercial use, nickel plating of the magnets for enhancing corrosion resistance is shown to be possible by electroplating.

永磁钕铁硼永磁体是通过电阻烧结生产的，这是粉末冶金领域的一种新方法。它被归类为电流辅助烧结（ECAS）工艺，其超快特性可实现数百毫秒量级的快速致密化，这比传统的烧结要短得多，而传统的烧结需要多达几个小时。此外，不需要混合的粉末润滑剂，从而减少了污染并增加了有效密度。通过优化电流密度，烧结时间和压制压力，提出了相对密度高达97％的磁盘。特定粉末的高能冲击球磨被证明对于随后的磁化很重要。筛分分析显示了球磨对烧结前原料粉末的影响。最终性能通过硬度压痕，SEM和XRD分析进行评估。评估磁性能并将其与烧结和粘结的商用Nd磁体进行比较。此外，所获得的磁性能符合原始粉末的技术数据表，这意味着通过电阻烧结和磁化可获得最佳性能。最后，对于适用于商业用途的磁体，显示出可以通过电镀对磁体进行镀镍以增强耐腐蚀性。此外，所获得的磁性能符合原始粉末的技术数据表，这意味着通过电阻烧结和磁化可获得最佳性能。最后，对于适用于商业用途的磁体，显示出可以通过电镀对磁体进行镀镍以增强耐腐蚀性。此外，所获得的磁性能符合原始粉末的技术数据表，这意味着通过电阻烧结和磁化可获得最佳性能。最后，对于适用于商业用途的磁体，显示出可以通过电镀对磁体进行镀镍以增强耐腐蚀性。