Improving the Performance of FINEMET Nanocrystalline Magnetic Powder Core by a Revamped Process and the Corresponding Mechanism
LI Qingda1, GUO Jianyong1, HU Jun1, WANG Hongli1, LIAN Fazeng2, LU Caowei3
1 College of Engineering,Heilongjiang August First Land Reclamation University, Daqing 163319; 2 Key Laboratory for Anisotropy and Texture of Materials of Ministry of Education, Northeastern University, Shenyang 110004; 3 Advance Technology and Materials Co., Ltd., Beijing 100081
Abstract: The magnetic property of FINEMET nanocrystalline magnetic powder core prepared by a revamped process was studied through comparative experiments, and the corresponding physical mechanism was observed. Scanning electron microscopy, transmission electron microscopy and X-ray diffraction were used to characterize the morphology, internal structure and lattice deformation of magnetic powders, B-H analyzer was used to characterize magnetic properties of magnetic powder core. The results showed that the revamped process could effectively reduce the loss of the magnetic powder core, and promote magnetic permeability and frequency range. The hysteresis loss and eddy current loss could be decreased by increasing milling time, and the optimum mil-ling time was 8 h. Our experiments found that the magnetic powders produced by the revamped process possess a relatively low lattice deformation, which means that the effective release of the remnant internal stress leads to the improve of magnetic powder core′s performance.
李庆达, 郭建永, 胡军, 王宏立, 连法增, 陆曹卫. 通过改进的制备工艺提高FINEMET纳米晶磁粉芯的磁性能及其机理*[J]. 《材料导报》期刊社, 2017, 31(16): 26-30.
LI Qingda, GUO Jianyong, HU Jun, WANG Hongli, LIAN Fazeng, LU Caowei. Improving the Performance of FINEMET Nanocrystalline Magnetic Powder Core by a Revamped Process and the Corresponding Mechanism. Materials Reports, 2017, 31(16): 26-30.
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2017, Vol. 31 
