研究ers at the U.S. Department of Energy (DoE)Critical Materials Institute(CMI) are using metal additive manufacturing in the hunt for a new material with “exceptional magnetic properties.”
Using Optomec’s激光工程网塑形（镜头）过程，该团队能够通过无数的铜合金组合物进行分类，以寻找更便宜，更丰富的替代品，替代了稀土近去型铁硼（NDFEB）磁铁。
该项目的最新结果现已在线发布TheJournal of The Minerals, Metals & Materials Society (JOM).
Clip from “Super-strong neodymium magnets destroying everyday items in slow motion” by磁铁的专家on YouTube.
Finding an alternative to the strongest magnets on the market
CMI是由Ames Laboratory，爱荷华州，一个与公共安全和资源管理有关的国家母鹿实验室，包括synthesis of new metals for additive manufacturing.
Under this current research directive, the purpose of the CMI is to discover “ways to eliminate and reduce reliance on rare-earth metals and other materials critical to the success of clean energy technologies.”
Neodymium is currently the most widely used, and strongest type of commercial available magnet. It has also been used before in3D printed magnet development科学家的项目National Research Council of Canada(NRC) and橡树岭国家实验室.
然而，作为一种稀土金属，DOE表示有兴趣找到一种替代霓虹灯的替代品，并且在该项目中，CMI正在重新访问已知的磁铁材料，以释放新的潜力。
在小时内确定潜力
LENS, a type of directed energy deposition (DED) technology, is used by CMI to speed screen samples of new cerium alloy compositions. On average, a range of samples (around 30 small alloy rods) could be 3D printed in around two hours instead of weeks when compared to traditional manufacturing methods.
To verify the results, the most promising 3D printed samples were manufactured in a second run using traditional manufacturing methods, and confirmed the CMI’s initial findings.
“这是非常具有挑战性的我使用激光打印dentify potential permanent magnet phases for bulk materials because of the need to develop the necessary microstructure,”解释CMI scientist Ikenna Nlebedim, “But this research shows that additive manufacturing can be used as an effective tool for rapidly and economically identifying promising permanent magnet alloys.”
“快速评估用于永久磁应用的CE-CO-FE-CU系统”在线发布乔姆。It is co-authored by F. Meng, R. P. Chaudhary, K. Gandha, I. C. Nlebedim, A. Palasyuk, E. Simsek, M. J. Kramer and R. T. Ott.
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特色图显示了基于Optomec Ded的镜头技术，3D打印到预制金属表面上。通过Optomec摄影
