CAJ | 학술논문

采用氧化物陶瓷工艺制备高磁导率MnZn铁氧体材料，研究了CaO和MoO3添加对材料磁性能的影响。添加CaO可以形成高阻晶界层，增大材料电阻率，明显增大材料的中频阻抗。添加MoO3能促进晶粒长大，提高起始磁导率，但磁导率频率特性变差。当复合添加0.04wt% CaO和0.07wt% MoO3时，材料具有较好的综合性能：μi=11495，μ200kHz/μ10kHz=98%，T25×15×8的环状磁心在50mV、500kHz测试条件下，阻抗Z=2255Ω。
채용양화물도자공예제비고자도솔MnZn철양체재료，연구료CaO화MoO3첨가대재료자성능적영향。첨가CaO가이형성고조정계층，증대재료전조솔，명현증대재료적중빈조항。첨가MoO3능촉진정립장대，제고기시자도솔，단자도솔빈솔특성변차。당복합첨가0.04wt% CaO화0.07wt% MoO3시，재료구유교호적종합성능：μi=11495，μ200kHz/μ10kHz=98%，T25×15×8적배상자심재50mV、500kHz측시조건하，조항Z=2255Ω。
High permeability MnZn ferrite materials were prepared using oxide ceramic technology. The effect of CaO and MoO3 additives on the magnetic properties of MnZn ferrites was investigated. The addition of CaO can facilitate to form high resistance grain boundary layers, increasing the resistivity of the ferrite and significantly increasing the middle frequency impedance. MoO3 additive can promote grain growth, increasing the permeability of MnZn ferrite, but deteriorating the frequency dependence of permeability. When adding 0.04wt% CaO and 0.07wt%MoO3, better general properties were obtained withμi=11495,μ200kHz/μ10kHz=98%, core impedance of 2255Ωat 50mV and 500kHz.