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无形软磁性复合材料的性能提升通过协同热紧缩和微细的FeNi粉末添加

Ce Wang^1,2, Hongya Yu¹, Yangzhou Li²

¹School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China.

Materials (Basel, Switzerland)

|March 14, 2026

概括

本研究介绍了一种使用FeSiBCCr/FeNi复合粉末的新型热压缩方法,以增强无形软磁复合材料 (ASMCs). 新的工艺改善了磁性特性,如透性,并减少了核心损失而不需要回火,使功率电子受益.

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
电气工程电气工程

背景情况:

模具电感器在电力电子中至关重要,它依赖于软磁性复合材料.
当前的无形软磁性复合材料 (ASMCs) 面临的挑战是,在没有后回的情况下实现高性能.

研究的目的:

开发基于FeSiBCCr的ASMC使用热压缩和FeNi复合粉末的协同优化策略.
为了增强ASMC的软磁性,而无需经过后处理.

主要方法:

整合热压缩成型与FeSiBCCr/FeNi复合粉.
分析粒子重新排列,密度增加和磁域墙壁固定减少.
评估磁性,包括有效的透性,核心损耗和直流偏差性能.

主要成果:

热压缩使微小的FeNi颗粒能够有效地填充空隙,从而增加复合材料的密度.
最佳的FeNi含量 (30重量%) 显著改善了软磁性特性.
有效透率增加了55.4%,达到20.6,具有出色的频率稳定性.
总核心损耗在100 kHz和50 mT下降了21.8%,降至285.6 kW/m3.
DC偏差性能达到了94.5% (@ 100 Oe).

结论:

协同优化策略成功提高了模具电感器的ASMC性能.
该方法为高频,高功率应用提供了实用且可扩展的解决方案.
开发的ASMC适用于新兴领域,如新能源汽车和人工智能系统.

关键词:

在FeNi合金粉末中.无形合金粉末是一种无形合金粉末.高密度的高密度的高密度低核心损失低核心损失软磁性复合材料是一种软磁性复合材料.热压缩的热压缩方式

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