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NiCoCrFeY高透合金纳米粉及其软磁性特性

Donghan Jiang¹, Zhifen Yuan¹, Zhenghou Zhu¹

¹School of Physics and Material Science, Nanchang University, Nanchang 330031, China.

Materials (Basel, Switzerland)

|January 26, 2024

概括

新开发的高合金纳米粉具有出色的软磁性和波吸收能力. 这些先进材料对软磁复合材料和电磁波吸收技术的应用非常有前途.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
电磁主义电磁主义

背景情况:

高合金 (HEA) 是具有独特特性的先进材料.
纳米粉末由于其高表面积与体积比率,提供了增强的特性.
软磁性材料对于各种电子应用至关重要.

研究的目的:

使用液相还原制备高合金纳米粉末.
为了研究这些纳米粉末的磁性和波吸收特性.
探索它们在软磁复合材料中的潜在应用.

主要方法:

用于合成FeNi和NiFeCoCrY合金纳米粉末的液相减少 (约. 在100 nm) 的距离.
软磁性质的表征,包括和磁化.
评估不同频段 (0.3-8.5 GHz,X频段,Ku频段) 的高频损失和波吸收性能.
磁性粉末核心复合材料的制造和测试.

主要成果:

合成的FeNi和NiFeCoCrY纳米粉末,颗粒大小在100nm左右.
通过和磁化达到5000 Oe和Ms的17.3 emu/g,实现了软磁性.
在特定厚度下,在Ku和X波段中表现出低高频损失 (0.3-8.5 GHz) 和出色的波浪吸收.
开发了具有稳定的频率恒定和磁场恒定磁化特性的磁粉核心复合材料.
获得高初始透率 (μm = 359) 和稳定的有效透率 (μe ≈ 4.6),在1-100KHz范围内变化最小 (<1%).

结论:

通过液相还原制备的高合金纳米粉具有理想的软磁性和波吸收性能.
这些纳米粉末适合创建具有出色稳定性的高性能磁性粉末核心复合材料.
这些材料在吸收电磁波和软磁复合材料行业具有很大的应用潜力.

关键词:

高的合金高的合金.软磁性复合材料是一种软磁性复合材料.具有柔软的磁性属性.

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