| abstract |
The invention discloses a preparation method of a MnZn power ferrite material with high mechanical properties and low loss, and relates to the technical field of ferrite material preparation. The invention comprises the following steps: (1) preparation of BTO-based PTC dielectric ceramic powder; (2) preparation of MnZn ferrite pre-sintered material; (3) doping treatment: taking MnZn power ferrite pre-sintered material as weight reference Standard, the following additives are added according to the weight percentage of calcined material: 0.01-0.03wt% V 2 O 5 , 0.05-0.15wt% TiO 2 , 0.01-0.03wt% Bi 2 O 3 , 0.1-0.3wt% Co 2 O 3 , 0.01-0.03wt% NiO and 0.02-0.08wt% BTO-based PTC dielectric ceramic powder, secondary ball milling; (4) sample forming; (5) sintering. The ferrite material prepared by adopting the technology of the invention has the performance of low loss at high frequency and high temperature. |