磷酸绝缘包覆对铁硅铝磁粉心的影响  

Influence of phosphoric acid insulation coating on FeSiAl magnetic powder core

作　　者：何超 王缘桃 杨陆[1] 王雨 董鑫 孙小龙 李奇 武文杰 李光学 HE Chao;WANG Yuan-tao;YANG Lu;WANG Yu;DONG Xin;SUN Xiao-long;LI Qi;WU Wen-jie;LI Guang-xue(Ninth Research Institute,China Electronics Technology Group,Mianyang 621000,China;School of Electronic Scienc and Engineering,University of Electronic Science and Technology of China,Chengdu 610000,China)

机构地区：[1]中国电子科技集团公司第九研究所,四川绵阳621000 [2]电子科技大学电子科学与工程学院,四川成都610000

出　　处：《磁性材料及器件》2024年第1期37-42,共6页Journal of Magnetic Materials and Devices

摘　　要：以破碎铁硅铝合金粉为原料,通过调节磷酸用量和引入Zn2+对粉末进行化学绝缘包覆,制备了铁硅铝磁粉心。采用FESEM、XRD、同步热分析仪、B-H分析仪等检测设备,对粉体形貌、物相、热稳定性和磁粉心磁性能、电性能进行表征和检测。结果表明:Zn2+的引入能有效改善铁硅铝颗粒表面绝缘层形貌,形成的绝缘层由纳米级网状结晶磷酸盐组成,致密、均匀地分布在颗粒表面,在有效降低磁粉心功率损耗的同时,提升了磁导率。The FeSiAl magnetic powder core was prepared from crushed FeSiAl alloy powder,which was chemically insulated by adjusting the amount of phosphoric acid and introducing Zn2+.FESEM,XRD,synchronous thermal analyzer,B-H analyzer and other testing equipment were used to characterize powder surface morphology,phase,thermal stability or test magnetic powder core electromagnetic performance.The results show that the introduction of Zn2+can effectively improve the microstructure of the insulating layer on the surface of FeSiAl particle.The formed insulating layer is composed of nano scale reticulated crystalline phosphate,which is densely and evenly distributed on the powder surface.It can effectively reduce the power loss of the magnetic powder core and improve the magnetic permeability.The insulating layer formed is composed of nano scale reticulated crystalline phosphate,which is densely and evenly distributed on the particle surface.It can effectively reduce the power loss of the magnetic particle core and improve the magnetic permeability.

关 键 词：铁硅铝 磁粉心 绝缘包覆 锌系磷化 功率损耗 

分 类 号：TM271.2[一般工业技术—材料科学与工程]