新型Fe72.7Si17B6.8Nb2.6Cu0.9纳米晶铁芯的磁场热处理工艺与软磁性能

doi:10.13251/j.issn.0254-6051.2022.07.014

金属热处理 ›› 2022, Vol. 47 ›› Issue (7): 81-85.DOI: 10.13251/j.issn.0254-6051.2022.07.014

新型Fe_72.7Si₁₇B_6.8Nb_2.6Cu_0.9纳米晶铁芯的磁场热处理工艺与软磁性能

孙浩¹, 宋文乐², 王磊², 薛志勇¹, 詹花茂³

1.华北电力大学能源动力与机械工程学院, 北京 102206;
2.国网河北省电力有限公司沧州供电分公司, 河北沧州 061001;
3.华北电力大学电气与电子工程学院, 北京 102206

收稿日期:2022-02-17 修回日期:2022-05-26 出版日期:2022-07-25 发布日期:2022-08-12
通讯作者: 薛志勇,教授,E-mail:xuezy@ncepu.edu.cn
作者简介:孙浩(1994—),男,硕士研究生,主要研究方向为纳米晶铁芯材料成分开发与热处理研究,E-mail:l5vansh@163.com。
基金资助:
国家电网重点研发项目(kjgw2020-002)

Magnetic field heat treatment process and soft magnetic properties of new Fe_72.7Si₁₇B_6.8Nb_2.6Cu_0.9 nanocrystalline iron core

Sun Hao¹, Song Wenle², Wang Lei², Xue Zhiyong¹, Zhan Huamao³

1. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China;
2. Cangzhou Power Supply Branch, State Grid Hebei Electric Power Co., Ltd., Cangzhou Hebei 061001, China;
3. School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China

Received:2022-02-17 Revised:2022-05-26 Online:2022-07-25 Published:2022-08-12

摘要/Abstract

摘要： 为满足高频变压器对铁芯低损耗的需求,研究了新型Fe_72.7Si₁₇B_6.8Nb_2.6Cu_0.9纳米晶铁芯的热处理工艺,探讨了铁芯动态、静态软磁性能随无磁场退火保温时间与施加不同磁场强度的横磁磁场退火时的变化规律。结果表明,不加磁场时,保温时间为60 min时铁芯的损耗最低,为P_{20 kHz/0.5 T}=11.82 W/kg,而其静态软磁性能在保温30 min处于最优状态,H_{c30 min}=1.86 A/m。施加横向磁场后,其直流磁性能剩磁和矫顽力显著降低,H_c40 _mT=0.64 A/m,而其损耗在磁场强度为50 mT达到最低,为P_{20 kHz/0.5 T}=10.53 W/kg。高频范围内涡流损耗在铁芯损耗中起主导作用,新型纳米晶铁芯经横向磁场热处理后高频损耗大幅降低,同时磁导率表现优异。

关键词: 纳米晶铁芯, 热处理, 铁损, 软磁性能

Abstract: In order to meet the requirement of low loss of iron core for high-frequency transformer, the heat treatment process of Fe_72.7Si₁₇B_6.8Nb_2.6Cu_0.9 nanocrystalline iron core was studied, and the variation of dynamic and static soft magnetic properties of the iron core annealed without magnetic field for different time and with different magnetic field intensity was discussed. The results show that when no magnetic field is applied, the core loss is the lowest when the holding time is 60 min, which is P_{20 kHz/0.5 T}=11.82 W/kg, and its static soft magnetic properties is in the optimal state when the holding time is 30 min, which is H_{c30 min}=1.86 A/m. After the transverse magnetic field is applied, the remanence and coercivity of the DC magnetic properties are significantly reduced, H_c40 _mT=0.64 A/m, and the loss reaches the lowest when the applied magnetic field intensity is 50 mT, which is P_{20 kHz/0.5 T}=10.53 W/kg. Eddy current loss plays a leading role in the core loss in the high frequency range. The high frequency loss of the new nanocrystalline iron core is greatly reduced after transverse magnetic field heat treatment, and its permeability is excellent.

Key words: nanocrystalline iron core, heat treatment, iron loss, soft magnetic properties

中图分类号:

TG139⁺.8

孙浩, 宋文乐, 王磊, 薛志勇, 詹花茂. 新型Fe_72.7Si₁₇B_6.8Nb_2.6Cu_0.9纳米晶铁芯的磁场热处理工艺与软磁性能[J]. 金属热处理, 2022, 47(7): 81-85.

Sun Hao, Song Wenle, Wang Lei, Xue Zhiyong, Zhan Huamao. Magnetic field heat treatment process and soft magnetic properties of new Fe_72.7Si₁₇B_6.8Nb_2.6Cu_0.9 nanocrystalline iron core[J]. Heat Treatment of Metals, 2022, 47(7): 81-85.

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新型Fe_72.7Si₁₇B_6.8Nb_2.6Cu_0.9纳米晶铁芯的磁场热处理工艺与软磁性能

Magnetic field heat treatment process and soft magnetic properties of new Fe_72.7Si₁₇B_6.8Nb_2.6Cu_0.9 nanocrystalline iron core

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