Direct-write 3D printing of NdFeB bonded magnets
Direct-write 3D printing of NdFeB bonded magnets
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DOI：
10.1080/10426914.2016.1221097
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发表时间：
2018-01-01
影响因子：
4.8
通讯作者：
Paranthaman, M. Parans
中科院分区：
文献类型：
--
作者：
Compton, Brett Gibson;Kemp, James William;Paranthaman, M. Parans
我们报道了一种通过基于挤压的增材制造（AM）（也称为3D打印）来制造复杂形状的Nd-Fe-B（NdFe B）粘结磁体的方法。我们已经成功地配制了一种用于直接写入AM的3D可打印环氧基墨水，其中具有可在室温下沉积的各向异性MQA NdFeB磁体颗粒。新原料的含量高达40体积% MQA各向异性NdFeB磁体颗粒，并且它们被示出在整个沉积过程中保持均匀地分散在热固性基质中。环形，条形和马蹄形3D磁体结构被打印并在100摄氏度的空气中固化，而不会降低磁性能。该研究为低温制备具有复杂几何形状的NdFeB粘结磁体提供了一条新的途径，为制备多功能混合结构和器件提供了新的机遇。
We report a method to fabricate Nd-Fe-B (NdFeB) bonded magnets of complex shape via extrusionbased additive manufacturing (AM), also known as 3D-printing. We have successfully formulated a 3D-printable epoxy-based ink for direct-write AM with anisotropic MQA NdFeB magnet particles that can be deposited at room temperature. The new feedstocks contain up to 40 vol.% MQA anisotropic NdFeB magnet particles, and they are shown to remain uniformly dispersed in the thermoset matrix throughout the deposition process. Ring, bar, and horseshoe-type 3D magnet structures were printed and cured in air at 100 degrees C without degrading the magnetic properties. This study provides a new pathway for fabricating NdFeB bonded magnets with complex geometry at low temperature, and presents new opportunities for fabricating multifunctional hybrid structures and devices.