当前位置:首页>南昌>南昌航空大学吉丽团队研究成果:不同元素掺杂对FeSiBY合金非晶形成能力与软磁性能的影响

南昌航空大学吉丽团队研究成果:不同元素掺杂对FeSiBY合金非晶形成能力与软磁性能的影响

  • 2026-05-17 07:50:16
南昌航空大学吉丽团队研究成果:不同元素掺杂对FeSiBY合金非晶形成能力与软磁性能的影响

引言

Fe基非晶软磁材料因其高磁导率、高饱和磁化强度、高电阻率和低磁致伸缩系数等优异特性,在电子设备小型化、轻量化、高频化、长续航的发展需求中占据重要地位。然而,不同元素的掺杂对Fe基非晶合金的非晶形成能力、热稳定性及软磁性能有显著影响。本文系统研究了微量掺杂元素P、Ti、Cu和C对Fe₇₈Si₇B₁₂.₄Y₀.₆合金非晶形成能力、热稳定性及软磁性能的影响,旨在为开发高性能Fe基非晶软磁材料提供理论依据和成分设计策略。文章基于南昌航空大学吉丽团队研究成果及国家自然科学基金(地区)项目支持。

01

研究背景

Fe基非晶合金的研究始于Fe-P-C系非晶软磁合金的制备,随后Fe-Si-B基非晶合金因其优异的软磁性能成为研究热点。近年来,随着电子器件向小型化、低损耗和高效率方向发展,提高铁芯的饱和磁感应强度(Bs)和软磁性能显得尤为重要。Fe-Si-B是常见的基体,Y对合金的非晶形成能力和热稳定性有积极作用,而P、Ti、Cu、C等元素的掺杂则可能进一步优化合金性能。然而,不同元素对FeSiBY系合金性能的影响机制尚不完全明确,因此,探讨这些元素的掺杂效应对合金性能优化具有重要意义。

02

创新亮点

(1)多元素系统研究

本文系统研究了P、Ti、Cu、C这4种元素对Fe₇₈Si₇B₁₂.₄Y₀.₆合金性能的影响,覆盖了不同元素类别(金属与非金属)和不同原子尺寸效应,为全面理解元素掺杂效应提供了丰富数据。

(2)非晶形成能力调控

通过XRD分析发现,P和C元素因其与Fe原子的大尺寸差异,显著增强了合金的拓扑混乱程度,成功制备出完全非晶态薄带;而Ti和Cu元素则因诱发α-Fe晶相析出,损害了非晶形成能力。这一发现为非晶合金的成分设计提供了新思路。

(3)热稳定性优化

DSC分析显示,Cu掺杂合金表现出最优的热稳定性,其过冷液相区宽度ΔTx高达126.2 ℃,源于其独特的相变过程;而C掺杂合金的ΔTx最窄,热稳定性较差。这一结果为通过元素掺杂调控合金热稳定性提供了实验依据。

(4)软磁性能平衡

软磁性能测试表明,P掺杂合金在保持较高饱和磁感应强度(Bs=1.50 T)的同时,具有最低的矫顽力(Hc=29.96 A/m),展现了最佳的综合软磁性能。这一发现为开发高性能Fe基非晶软磁材料提供了关键元素选择。

03

图文展示

图1. Fe₇₈Si₇B₁₂.₄Y₀.₆M₂(M=P、Ti、Cu、C)合金条带的X射线衍射图谱

Fig.1 X-ray diffraction patterns of as-spun Fe₇₈Si₇B₁₂.₄Y₀.₆M₂ (M=P, Ti, Cu, C) alloy ribbons 

图2 Fe₇₈Si₇B₁₂.₄Y₀.₆M₂(M=P、Ti、Cu、C)合金的(a)DSC曲线,(b)特征温度△Tx

Fig.2 (a) DSC curves and (b) characteristic temperature△Tx of Fe₇₈Si₇B₁₂.₄Y₀.₆M₂ (M=P, Ti, Cu, C) alloys 

图3. Fe₇₈Si₇B₁₂.₄Y₀.₆M₂(M=P、Ti、Cu、C)合金条带的(a)磁滞回线图,(b)BsHc数据图

Fig.3 (a) Hysteresis curves and (b) Bs and Hc of Fe₇₈Si₇B₁₂.₄Y₀.₆M₂ (M=P, Ti, Cu, C) alloy ribbons

04

结论

本文通过系统研究P、Ti、Cu、C这4种元素对Fe₇₈Si₇B₁₂.₄Y₀.₆合金非晶形成能力、热稳定性及软磁性能的影响,得出以下结论:

(1)非晶形成能力:P和C元素因其与Fe原子的大尺寸差异,成功制备出完全非晶态薄带;Ti和Cu元素则因诱发晶相析出,损害了非晶形成能力。

(2)热稳定性:Cu掺杂合金表现出最优的热稳定性,C掺杂合金热稳定性较差。

(3)软磁性能:P掺杂合金在保持高Bs的同时具有最低的Hc,展现了最佳的综合软磁性能;C掺杂合金虽Bs最高,但Hc过大;Ti和Cu掺杂合金因晶化相存在,软磁性能恶化。

总体而言,P元素在非晶形成能力、热稳定性和软磁性能三者之间取得了最佳平衡,是优化FeSiBY系非晶合金性能的理想微合金化元素。本研究为开发高性能Fe基非晶软磁材料提供了关键理论依据和成分设计策略。

引用本文

文章发表于《功能材料》2026年第57卷第4期,欢迎引用本文:    

屈永佳, 吉丽, 杨军,等.不同元素掺杂对FeSiBY合金非晶形成能力与软磁性能的影响[J].功能材料,2026,57(4):24-29.

QU Y J, JI L, YANG J,et al.Influence of different element doping on the amorphous formation ability and soft magnetic properties of FeSiBY alloy[J].Journal of functional materials,2026,57(4):24-29.

END

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  1. CONNECT:[ UseTime:0.000526s ] mysql:host=127.0.0.1;port=3306;dbname=aa460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000671s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000332s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000289s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000549s ]
  6. SELECT * FROM `set` [ RunTime:0.000229s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000584s ]
  8. SELECT * FROM `article` WHERE `id` = 514541 LIMIT 1 [ RunTime:0.000476s ]
  9. UPDATE `article` SET `lasttime` = 1779130676 WHERE `id` = 514541 [ RunTime:0.003082s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.003899s ]
  11. SELECT * FROM `article` WHERE `id` < 514541 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000545s ]
  12. SELECT * FROM `article` WHERE `id` > 514541 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000475s ]
  13. SELECT * FROM `article` WHERE `id` < 514541 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000892s ]
  14. SELECT * FROM `article` WHERE `id` < 514541 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004399s ]
  15. SELECT * FROM `article` WHERE `id` < 514541 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.010090s ]
0.111082s