With the increasing miniaturization and stricter requirements of electronic devices, the traditional manufacturing methods of permanent magnets used in many different electrical applications from sensors to motors have been challenged.According to foreign media reports, researchers from the Technical University of Graz (TU Graz) have joined hands with the University of Vienna and the Friedrich-Alexander Universität Erlangen-Nürnberg (FAU).3D printingTechnology produced super magnets.
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According to reports, the laser3D printingThe shape of super magnets produced by technology is more flexible, and specific magnets can be produced according to specific application requirements. Specifically, this method mainly uses the powder form of magnetic materials to apply them in layers and melt them to bond particles, thereby obtaining pure metal s component. Researchers have now developed the process to a stage where a relatively high-density magnet is printed while still trying to control its microstructure.
Siegfried Arneitz and Mateusz Skalon of the Institute of Materials Science Research, Connection and Forming at the Graz University of Technology explained that the combination of these two functions allows the material to be used efficiently because it means that we can precisely adjust the magnetic properties according to the application.
It is understood that the initial focus of the research team is the production of neodymium (neodymium iron boron) magnets.Due to its chemical properties, the rare earth metal neodymium is used as the basis of many strong permanent magnets, of which permanent magnets are important applications (including computers and smartmobile phone) Key components. The researchers have published a detailed description of their work in the journal Materials. But in other applications, such as electric brakes, electromagnetic switches, and certain motor systems, the strength of NdFeB magnets is unnecessary.
Therefore, the Institute of Materials Science (joining and forming) of the Graz University of Technology is working on the development of Fe-Co (iron and cobalt) magnets.3D printingResearch has been carried out and from two perspectives, they are considered as promising alternatives to NdFeB magnets. The mining of rare earth metals is resource-intensive, and the recycling of such metals is still in its infancy. Rare earth metals also lose their magnetic properties at high temperatures, while special Fe-Co alloys can maintain their magnetic properties at temperatures ranging from 200° to 400°C and exhibit good temperature stability.
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