高饱和磁感应强度铁基非晶合金带材性能研究-中国材料进展

文章信息/Info

Title:: Study on Properties of High Saturation Magnetic Induction Fe-Based Amorphous Alloy Strips

作者:: 武兰民1; 吴雪2; 张燕秉1; 杨富尧2; 高洁2; 马光2; 陈新2; （1. 国家电网有限公司，北京 100031）（2. 全球能源互联网研究院有限公司，北京 102211）

Author(s):: WU Lanmin1; WU Xue2; ZHANG Yanbing1; YANG Fuyao2; GAO Jie2; MA Guang2; CHEN Xin2; (1. State Grid Co., Ltd., Beijing 100031, China) （2. Global Energy Interconnection Research Institute Co., Ltd., Beijing 102211, China)

Keywords:: high saturation magnetic induction; amorphous alloy; magnetostriction; soft magnetic performance

摘要:: 通过成分调整获得高饱和磁感应强度的铁基非晶合金带材，用差式扫描量热仪（DSC）分析其非晶形成能力和晶化行为，根据确定的两级起始晶化温度，选择合适的热处理工艺，并对退火后的非晶合金带材进行磁致伸缩性能测试。结果表明：适当提高Fe元素的含量、合理控制C和Si的比例，可得到饱和磁感应强度高、矩形度好、磁致伸缩低、噪音小的非晶合金带材，其饱和磁感应强度Bs>1.65 T，矫顽力<3 A/m，磁致伸缩振幅λp-p为836 nm/m，加权噪声值为59 dB，矫顽力与λp-p成正相关关系，软磁性能更好。高饱和磁感应强度非晶合金的磁化曲线矩形比高，从而使得磁畴壁移动区域更大，噪声更低。

Abstract:: The Fe-based amorphous alloy strip with high saturation magnetic induction was obtained through appropriate composition adjustment. The amorphous forming ability and crystallization behavior were analyzed by DSC, and the appropriate heat treatment process was selected according to the determined initial crystallization temperature of two stages, at the same time, the magnetostrictive properties of the annealed amorphous alloy strips were tested. The results show that the amorphous alloy with high saturation magnetic induction, good rectangular degree, low magnetostriction and low noise can be obtained by properly increasing the content of iron and reasonably controlling the content ratio of C and Si, its saturation magnetic induction Bs is higher than 1.65 T, coercivity is less than 3 A/m, magnetostrictive amplitude is 836 nm/m, weighted noise value is 59 dB. The coercivity is positively correlated with magnetostrictive amplitude, soft magnetic performance is better. Because of the higher rectangular ratio of magnetization curve of high saturation magnetic induction amorphous alloy, the domain wall moving region is larger and the noise is lower.