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聚四氟乙烯含量、压制压力和退火处理对铁基软磁复合材料磁性能的影响

Influence of Polytetrafluoroethylene Content, Compaction Pressure, and Annealing Treatment on the Magnetic Properties of Iron-Based Soft Magnetic Composites.

作者信息

Song Mei, Luo Fan, Shang Yajing, Duan Zhongxia

机构信息

Key Laboratory of High Density Electromagnetic Power and Systems (Chinese Academy of Sciences), Institute of Electrical Engineering, Chinese Academy of Sciences, Haidian District, Beijing 100190, China.

Institute of Electrical Engineering and Advanced Electromagnetic Drive Technology, Qilu Zhongke, Jinan 250101, China.

出版信息

Molecules. 2024 Aug 25;29(17):4019. doi: 10.3390/molecules29174019.

DOI:10.3390/molecules29174019
PMID:39274867
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11396742/
Abstract

To improve the magnetic properties of iron-based soft magnetic composites (SMCs), polytetrafluoroethylene (PTFE) with excellent heat resistance, electrical insulation, and extremely high electrical resistivity was chosen as an insulating coating material for the preparation of iron-based SMCs. The effects of PTFE content, compaction pressure, and annealing treatment on the magnetic properties of Fe/PTFE SMCs were investigated in detail. The results demonstrate that the PTFE insulating layer is successfully coated on the surface of iron powders, which effectively reduces the core loss, increases the resistivity, and improves the frequency stability and the quality factor. Under the combined effect of optimal PTFE content, compaction pressure, and annealing treatment, the iron-based SMCs exhibit a high effective permeability of 56, high saturation magnetization of 192.9 emu/g, and low total core losses of 355 mW/cm and 1705 mW/cm at 50 kHz for B = 50 mT and 100 mT. This work provides a novel insulating coating layer that optimizes magnetic properties and is advantageous for the development of iron-based SMCs. In addition, it also provides a comprehensive understanding of the relationship between process parameters and magnetic properties, which is of great guiding significance for scientific research and industrial production.

摘要

为提高铁基软磁复合材料（SMC）的磁性能，选择具有优异耐热性、电绝缘性和极高电阻率的聚四氟乙烯（PTFE）作为绝缘涂层材料来制备铁基SMC。详细研究了PTFE含量、压制压力和退火处理对Fe/PTFE SMC磁性能的影响。结果表明，PTFE绝缘层成功包覆在铁粉表面，有效降低了磁芯损耗，提高了电阻率，改善了频率稳定性和品质因数。在最佳PTFE含量、压制压力和退火处理的共同作用下，铁基SMC在B = 50 mT和100 mT、50 kHz时表现出56的高有效磁导率、192.9 emu/g的高饱和磁化强度以及355 mW/cm和1705 mW/cm的低总磁芯损耗。这项工作提供了一种优化磁性能的新型绝缘涂层，有利于铁基SMC的发展。此外，它还提供了对工艺参数与磁性能之间关系的全面理解，对科研和工业生产具有重要的指导意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/2096deb43caa/molecules-29-04019-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/9109bbe6286e/molecules-29-04019-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/76568fc1149d/molecules-29-04019-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/af3b3a4b6a2c/molecules-29-04019-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/bc6be959fa42/molecules-29-04019-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/269d90b92b1c/molecules-29-04019-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/921c46aeca09/molecules-29-04019-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/6afe19d8a2ba/molecules-29-04019-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/5e719b33bf1d/molecules-29-04019-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/2096deb43caa/molecules-29-04019-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/9109bbe6286e/molecules-29-04019-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/76568fc1149d/molecules-29-04019-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/af3b3a4b6a2c/molecules-29-04019-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/bc6be959fa42/molecules-29-04019-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/269d90b92b1c/molecules-29-04019-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/921c46aeca09/molecules-29-04019-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/6afe19d8a2ba/molecules-29-04019-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/5e719b33bf1d/molecules-29-04019-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2317/11396742/2096deb43caa/molecules-29-04019-g009.jpg

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