孙绍恒,乔亚霞,张浩,涂德军

• 1:中国电力科学研究院有限公司

摘要(Abstract)：

近年来，随着磁性元器件的日益高频化和小型化，以及节能环保的要求，开发和研究高性能软磁材料具有重要意义。设计了FeCoNi系软磁高熵合金，首先通过锻造-热轧-冷轧工艺制备了厚度为60和80μm的薄带，随后对薄带进行了不同温度的再结晶退火处理，采用扫描电镜、X射线衍射、拉伸实验和软磁材料磁特性测量系统等研究了高熵合金带材退火后的显微组织、力学性能和软磁性能。结果表明：随着退火温度的升高，合金带材的再结晶晶粒尺寸逐渐增大，屈服强度和抗拉强度呈现降低趋势，但仍然保持单相FCC结构，低频铁损和矫顽力降低明显，磁化强度上升；当退火温度相同时，60μm厚带材的饱和磁感应强度高于80μm厚带材的，矫顽力和在各频率下的交流铁损均低于80μm厚带材的，且在高频环境下降低更为明显；和其他软磁材料相比，60μm厚带材经1200℃退火处理后在高频下的损耗远小于国标中要求的非晶纳米晶的损耗，且磁化强度大于硅钢。

关键词(KeyWords)： 高熵合金;薄带;软磁性能;高频;铁损

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司总部科技项目(软磁高熵合金电工新材料开发研究5500-202255297A-2-0-QZ)

作者(Author): 孙绍恒,乔亚霞,张浩,涂德军

DOI: 10.13289/j.issn.1009-6264.2024-0581

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