烧结温度对Micro-FAST制备MnZn铁氧体磁芯显微组织的影响  

Effect of Sintering Temperature on Microstructure of MnZn Ferrite Magnetic Core Prepared by Micro-FAST

作　　者：冯卫东 屈立 王维 杨刚[2] 杨屹[2] 杨世宇 吴明霞[2] FENG Weidong;QU Li;WANG Wei;YANG Gang;YANG Yi;YANG Shiyu;WU Mingxia(Yibin Sun Display Co.,Ltd.,Yibin 644007,China;School of Mechanical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]宜宾盈泰光电有限公司,四川宜宾644007 [2]四川大学机械工程学院,四川成都610065

出　　处：《热加工工艺》2025年第4期133-136,141,共5页Hot Working Technology

基　　金：国家自然科学资金资助项目(51675357);宜宾市科技计划资助项目(2021GY004);四川大学-宜宾市人民政府校市战略合作专项资金资助项目(2020CDYB-20)。

摘　　要：采用多物理场耦合烧结技术(Micro-FAST)制备MnZn铁氧体U型磁芯零件,探究了烧结温度对MnZn铁氧体磁芯的密度、物相和显微组织的影响。结果表明:在850~1000℃烧结温度范围内,随着烧结温度的升高,试样的密度和尖晶石相含量均先增加后减少。在烧结温度900℃、保温时间480 s、升温速率20℃/s、外加压力70 kg、降温速率5℃/s的工艺参数条件下,烧结制备的MnZn铁氧体磁芯零件具有4.95 g/cm^(3)的最大密度。MnZn ferrite U-shaped magnetic core parts were prepared by Micro-forming fields activated sintering technology(Micro-FAST),and the effects of sintering temperatures on the density,phase and microstructure of MnZn ferrite magnetic cores were investigated.The results show that in the sintering temperature range of 850℃-1000℃,with the increase of sintering temperature,the density and the spinel content of the samples increase first and then decrease.Under the process parameters of sintering temperature 900℃,holding time 480 s,heating rate 20℃/s,applied pressure 70 kgf and cooling rate 5℃/s,MnZn ferrite magnetic core prepared by Micro-FAST has the maximum density of 4.95 g/cm^(3).

关 键 词：多物理场耦合烧结技术 MNZN铁氧体 烧结温度 显微组织 

分 类 号：TG141[一般工业技术—材料科学与工程]