高磁性能铁氧体的3D打印及其应用研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (6): 1972-1978.

高磁性能铁氧体的3D打印及其应用研究

魏相霞¹, 解娅男²

1.青岛大学未来研究院自动化学院,山东省工业控制技术重点实验室,青岛 266071;
2.齐鲁理工学院化学与生物工程学院,济南 250200

收稿日期:2021-03-07 修回日期:2021-04-07 出版日期:2021-06-15 发布日期:2021-07-08
作者简介:魏相霞(1989—),女,博士,讲师。主要从事3D打印陶瓷的研究。E-mail:xxweizju@126.com
基金资助:
山东省自然科学基金(ZR2020QE040)

3D Printing of Ferrite with High Magnetic Performance and Its Applications

WEI Xiangxia¹, XIE Yanan²

1. Shandong Key Laboratory of Industrial Control Technology, Institute for Future (IFF), School of Automation, Qingdao University,Qingdao 266071, China;
2. School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China

Received:2021-03-07 Revised:2021-04-07 Online:2021-06-15 Published:2021-07-08

摘要/Abstract

摘要： 针对传统陶瓷成型方式难以甚至无法制备高性能复杂结构的不足和局限性,采用一种直写陶瓷3D打印技术,通过配制可打印的陶瓷浆料实现陶瓷结构近净尺寸成型。研究了锌含量对镍锌铁氧体微观形貌、结晶结构及磁性能的影响,结果表明,锌含量x=0.4(Ni_1-xZn_xFe₂O₄)时,由于阳离子分布效应,铁氧体饱和磁场强度(M_s)可达到76.3 emu/g。此外还研究了陶瓷浆料的配制,并利用直写3D打印技术得到复杂三维网状结构,结果表明,烧结后可制备软磁性镍锌铁氧体三维网状致密结构。最后研究了该结构在低磁场下分离磁性颗粒的效果,结果表明,3D打印铁氧体网状结构能够作为导磁介质增强磁通密度,可有效提高磁性颗粒的分离效率,并通过有限元数值仿真进行验证。

关键词: 镍锌铁氧体, 3D打印, 网状结构, 烧结温度, 磁分离

Abstract: It is difficult or even unable for traditional ceramic processing methods to prepare complex structures with high performance. To overcome this, a direct ink writing based three-dimensional (3D) printing technology was used to near net-shape ceramic structures by the preparation of printable ceramic pastes. In this work, the influence of zinc content on the properties of nickel zinc ferrite was investigated in terms of microstructures, crystal structures, and magnetic properties. The results show that the saturation magnetization (M_s) of nickel zinc ferrite reaches 76.3 emu/g, when zinc content x is 0.4 in Ni_1-xZn_xFe₂O₄, because Zn²⁺ occupies the tetrahedral (A) position due to the cation distribution effect. Moreover, through the preparation of ceramic pastes, nickel zinc ferrite with complex mesh structures can be shaped using the direct writing 3D printing approach. The results show that 3D printed soft magnetic nickel zinc ferrite with a dense mesh structure is obtained after sintering. In the following, the 3D printed magnetic mesh is used to separate magnetic particles under a relatively low magnetic field. Overall, the ferrite mesh structures can be served as a magnetic medium to significantly enhance the magnetic flux density and magnetic field gradient, and therefore is capable of effectively improving the separation efficiency of magnetic particles. Finally, the high gradient magnetic separation is simulated and verified by finite element numerical COMSOL simulation.

Key words: NiZn ferrite, 3D printing, mesh structure, sintering temperature, magnetic separation

中图分类号:

TB321

魏相霞, 解娅男. 高磁性能铁氧体的3D打印及其应用研究[J]. 硅酸盐通报, 2021, 40(6): 1972-1978.

WEI Xiangxia, XIE Yanan. 3D Printing of Ferrite with High Magnetic Performance and Its Applications[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(6): 1972-1978.

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