Ferrite Paste Cured With Ultraviolet Light for Additive Manufacturing of Magnetic Components for Power Electronics

被引：25
|
作者：
Liu, Lanbing [1 ]
Ge, Ting [2 ,3 ]
Ngo, Khai D. T. [2 ,3 ]
Mei, Yunhui [4 ]
Lu, Guo-Quan [1 ,2 ,3 ,4 ]
机构：
[1] Virginia Polytech Inst & State Univ, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA
[2] Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Blacksburg, VA 24061 USA
[3] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA
[4] Tianjin Univ, Dept Mat Sci & Engn, Tianjin 300072, Peoples R China
来源：
IEEE MAGNETICS LETTERS | 2018年 / 9卷
基金：
美国国家科学基金会;
关键词：
Soft magnetic materials; additive manufacturing; high-performance feedstock; ultraviolet-curable ferrite; COLLOIDAL INKS; INDUCTOR; CORE;
D O I：
10.1109/LMAG.2018.2822622
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Additive manufacturing (AM) has the potential to rapidly prototype innovative designs of magnetic components aimed at improving power density and efficiency of switch-mode power converters. However, only a few magnetic feedstocks are available for AM, and the fabricated parts have significantly poorer magnetic properties. Our previous studies showed the promise of an extrusion-based AM platform for making high-performance power magnetics. But, the magnetic paste feedstock developed in these studies suffered from the "slumping" problem, thus not suitable for building large or tall core structures. To improve the AM capability, a ferrite paste was developed that is cured upon ultraviolet (UV) illumination. Core structures with large aspect ratios were fabricated by retrofitting the printer with a UV-light-emitting diode module. By varying the magnetic composition of the paste and sintering the printed parts at and below 1000 degrees C, we made tall (> 4 mm) ferrite cores with relative permeability ranging from 63 to 103 and resonance frequency higher than 30 MHz.
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页数：5
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