摘要
在我国“碳达峰,碳中和”和世界能源大变革的重大战略背景下,以光伏、风力发电和新能源为代表的领域蓬勃发展,这对电子元器件提出了可承受大电流、大功率的要求。磁粉心是指对金属软磁粉末进行绝缘包覆,然后通过模压成型和退火热处理后得到的一类软磁复合材料。磁粉心具有饱和磁感应强度高、温度稳定性好、直流偏置性能优异等特点,已广泛应用于光伏、风力发电和新能源装备中。Fe基非晶/纳米晶合金软磁性能优异、经济性好,在制备高性能磁粉心领域有广阔的前景。Fe基非晶/纳米晶合金粉末的制备方法通常为机械破碎法和雾化法,其中雾化法具有适宜大规模生产、污染小、成本低等优点。然而,由于Fe基非晶材料的非晶形成能力较低,使用雾化法来制备软磁性能好、批次稳定性高的Fe基非晶/纳米晶粉末存在着较大的困难和瓶颈。概述了非晶/纳米晶材料的微观组织特征和形成机制,以及雾化法制备金属粉末的机理。最后,分析了雾化法制备Fe基非晶/纳米晶软磁合金粉末的研究现状,以期为后续研究和发展提供参考。
Under the background of “Carbon emission peak,carbon neutrality” and great change of world energy,the field represented by photovoltaic,wind power and new energy are booming,which requires electronic components to withstand large current and high power.Magnetic core also named as soft magnetic composite material,which is fabricated by insulating the soft magnetic powder,and then molded and annealed.The magnetic core with high saturation magnetic induction,good stability,excellent DC bias performance has been widely used in photovoltaic,wind power and new energy equipment.Fe-based amorphous and nanocrystalline alloys have excellent soft magnetic properties and good economy,resulting bright prospects in the preparation of high-performance magnetic cores.The mechanical crushing and atomization are the commonly preparation methods for Fe-based amorphous/nanocrystalline alloy powders.Among them,the atomization method has the advantage of mass production,low pollution and cost.However,due to the low glass forming ability of Fe-based amorphous materials,it is difficult to mass prepare Fe-based amorphous/nanocrystalline powders with good soft magnetic properties by using atomizing method.Now,we reviewed the microstructure of amorphous/nanocrystalline materials,and the formation mechanism of metal powder preparation by atomization.Finally,we analyzed the research status of Fe-based amorphous/nanocrystalline atomized powderin order to provide ideas for the follow-up research and development.
作者
董鑫
杨陆
李光学
王雨
孙小龙
武文杰
李奇
何超
张景铭
王缘桃
DONG Xin;YANG Lu;LI Guang-xue;WANG Yu;SUN Xiao-long;WU Wen-jie;LI Qi;HE Chao;ZHANG Jing-ming;WANG Yuan-tao(Southwest Institute of Applied Magnetics,Mianyang 621000,China)
出处
《磁性材料及器件》
CAS
2024年第4期79-88,共10页
Journal of Magnetic Materials and Devices
基金
国家重点研发计划项目(2022YFB3804103)。
关键词
Fe基非晶/纳米晶
磁粉心
雾化法
粉末
Fe-based amorphous and nanocrystalline alloy
magneticcore
atomization
powders
