| 3D printing is an eclectic technique used in almost every application you can think of, from simply using plastic or pure metal. However, materials used to produce special properties such as electrical and magnetic properties may be very long The way to go. Many researchers have developed different methods for 3D printed magnets. The most recent organization that has contributed to this field is the US Department of Energy's Critical Materials Institute (CMI), which uses 3D laser metal printing technology to optimize permanent magnet materials. The Institute believes that the material may be a more economical alternative to the expensive rare earth neodymium-iron-boron (NdFeB) magnets used in certain applications. The alloy used by CMI consists of niobium, which is a relatively inexpensive and rare material. Rare earth elements, as well as cobalt, iron and copper. The researchers 3D printed a variety of samples, showing a series of ingredients.  'This is a known magnet material, but we want to re-examine it to see if we can find even better magnetism.' CMI scientist Ryan Ott said. 'With four elements, there is a lot of work For your choice. Using 3D printing greatly speeds up the search process. 'The production of magnets using traditional production methods may take several weeks, but 3D printing takes only two hours. The researchers identified the most promising samples and then used traditional ones. The second set of samples was made by the casting method and compared with the original sample to see the difference between them. CMI scientist Ikenna Nlebedim said: 'Because of the need to develop the necessary microstructures, the use of laser printing to identify potential permanent magnet phases of bulk materials is very challenging. 'But this study shows that additive manufacturing can be used as a rapid economy. Made of permanent magnet alloy effective tool. '  The study was documented in a paper entitled "Rapid Evaluation of Ce-Co-Fe-Cu Systems for Permanent Magnet Applications" by F. Meng, RP Chaudhary, K. Ganhda, IC Nlebedim, A. Palasyuk, E Simsek, MJ Kramer, and RTOtt. 'Synthesis of large sample arrays with controlled composition by Laser Engineered Network Forming (LENS)' by adding different proportions of alloy powders to a laser-generated bath.' Said. 'Based on the magnetic evaluation of LENS printed samples, arc melting and ingots with different composition of Fe (5-20 at. %) and Co (60-45 at. %) were prepared while maintaining a constant Ce (16 atomic %). ) and Cu (19 atomic %) content. The evolution of microstructures and phases of different chemical compositions and their dependence on magnetic properties were analyzed in as-cast and heat treated samples. In the LENS printing and casting samples, we found the best The magnetic properties correspond to the main single-phase Ce (CoFeCu) 5 microstructures, where high coercivity (Hc > 10 kOe) can be achieved without any microstructure refinement. The Key Materials Institute is an energy innovation center led by the US Department of Energy Ames Laboratory, supported by the Advanced Manufacturing Office of the Office of Energy Efficiency and Renewable Energy. CMI is studying how to reduce or eliminate rare earth metals and is currently critical to clean energy. The dependence of other materials. Source: China 3D Printing Network |
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