粉末冶金技术2025，Vol.43Issue(5)：537-547,11.DOI:10.19591/j.cnki.cn11-1974/tf.2024060012
基于CaO绝缘层和FexOy中间层的铁基软磁复合材料的制备与性能优化
Preparation and performance optimization of iron-based soft magnetic composites based on CaO insulating layer and FexOy transitional interlayer
摘要
Abstract
To explore the application potential of calcium oxide(CaO)as the insulating layer in soft magnetic composites,a strategy of introducing FexOy as the intermediate transition layer between the CaO insulating layer and the iron matrix was proposed to alleviate the lattice mismatch and crack formation between the iron powder matrix and the CaO insulating layer.Using the reduced iron powders as the raw materials,the excellent Fe/FexOy/CaO soft magnetic composites were successfully prepared by surface oxidation,hydrothermal synthesis,and thermal decomposition of(CH3COO)2Ca combined with cold pressing forming.The formation mechanism of the CaO insulating layer was deeply studied,and the influence of calcium acetate addition amount on the structure and electromagnetic properties of the Fe/FexOy/CaO soft magnetic composites was further explored.It is found that,the introduction of the FexOy intermediate layer effectively alleviates the lattice mismatch between the iron powder matrix and the CaO insulating layer,and significantly reduces the formation of cracks.At the same time,the CaO insulating layer effectively increases the resistivity and reduces the eddy current losses,thereby achieving lower magnetic losses and higher magnetic permeability.By precisely controlling the addition amount of calcium acetate,the magnetic and electrical properties of the Fe/FexOy/CaO soft magnetic composites can be further optimized,achieving the goal of reducing energy loss.关键词
铁基软磁复合材料/CaO绝缘层/中间过渡层/晶格失配/磁性能Key words
iron-based soft magnetic composites/CaO insulating layer/transitional interlayer/lattice mismatch/magnetic properties分类
矿业与冶金引用本文复制引用
何豪,李凯旋,刘洋,吴朝阳,黄贞益,王锐..基于CaO绝缘层和FexOy中间层的铁基软磁复合材料的制备与性能优化[J].粉末冶金技术,2025,43(5):537-547,11.基金项目
国家自然科学基金资助项目(52274311) （52274311）
安徽省自然科学基金青年项目(2508085Y031) （2508085Y031）
安徽省优青项目(2023AH030028) （2023AH030028）
安徽省重大产业创新项目(AHZDCYCX-LSDT2023-01) （AHZDCYCX-LSDT2023-01）
2022年安徽省研究生创新创业实践项目(SA2300000883) （SA2300000883）
安徽省青年拔尖人才项目 （）
