金属热处理 ›› 2021, Vol. 46 ›› Issue (12): 119-123.DOI: 10.13251/j.issn.0254-6051.2021.12.019

• 材料研究 • 上一篇    下一篇

Ni合金化对Finemet合金热稳定性及软磁性能的影响

张超汉, 陶平均, 朱坤森, 黄文豪, 杨元政   

  1. 广东工业大学 材料与能源学院, 广东 广州 510006
  • 收稿日期:2021-07-04 出版日期:2021-12-25 发布日期:2022-02-18
  • 通讯作者: 陶平均,教授,博士,E-mail:pjtao@gdut.edu.cn
  • 作者简介:张超汉(1996—),男,硕士研究生,主要研究方向为新型铁基非晶/纳米晶磁性材料及器件,E-mail:1163922713@qq.com。
  • 基金资助:
    广东省协同创新与环境平台能力建设项目(2017B090901035);广东省公益研究与能力建设项目(2016A010103033)

Effect of Ni alloying on thermal stability and soft magnetic properties of Finemet alloy

Zhang Chaohan, Tao Pingjun, Zhu Kunsen, Huang Wenhao, Yang Yuanzheng   

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou Guangdong 510006, China
  • Received:2021-07-04 Online:2021-12-25 Published:2022-02-18

摘要: 通过铜辊甩带法制备了成分为Fe73.5-xSi13.5B9Cu1Nb3Nix(x=0、1、2、3)的非晶带材,并对其进行退火处理。利用XRD、DSC、VSM和软磁直流测试仪等对带材的相结构、热稳定性以及软磁性能进行测试分析。结果表明,所制备合金带材淬火态下均为完全非晶结构,经560 ℃保温60 min退火处理后,合金中形成了非晶和α-Fe(Si)纳米晶双相共存结构。随着Ni含量的增加,整体上非晶带材的一级起始晶化温度Ts1和二级起始晶化温度Ts2先减小后增大,两级起始晶化温度之差ΔTs整体呈下降的趋势,由166.0 ℃下降至132.8 ℃,热稳定性降低。淬火态下,Ni元素的添加使得非晶带材的软磁性能有所恶化。经退火处理后,带材的软磁性能明显提升,当Ni含量x=1时,具有较好的软磁性能,其饱和磁化强度为157.7 emu/g,矫顽力为6.8 Oe。

关键词: Finemet非晶合金, Ni合金化, 退火, 热稳定性, 软磁性能

Abstract: Fe73.5-xSi13.5B9Cu1Nb3Nix (x=0, 1, 2, 3) alloy strips were prepared by copper roller melt-spinning method and then treated by annealing. The phase structure, thermal stability and soft magnetic properties of the strips were tested by XRD, DSC, VSM and soft magnetic DC tester. The results show that the alloy strips are completely amorphous in the quenched state, and the two-phase coexistence structure of amorphous and α-Fe nanocrystalline are formed in the alloy after annealing at 560 ℃ for 60 min. With the increase of Ni content, the first initial crystallization temperature (Ts1) and the second initial crystallization temperature (Ts2) of the alloy strips decrease first and then increase on the whole. The difference value between the two initial crystallization temperatures (ΔTs) shows a downward trend as a whole, from 166.0 ℃ to 132.8 ℃, and the thermal stability decreases. In the quenched state, the addition of Ni makes the soft magnetic properties of the amorphous strips deteriorate. After annealing, the soft magnetic properties of the strips are obviously improved. When the Ni content is x=1, the strip has better soft magnetic properties: saturation magnetization of 157.7 emu/g and the coercive force of 6.8 Oe.

Key words: Finemet amorphous alloy, Ni alloying, annealing, thermal stability, soft magnetic properties

中图分类号: