Ni-free manganese-zinc ferrite material for -20-140°C and manufacturing method thereof

Abstract

The invention provides a Ni-free manganese-zinc ferrite material used at -20-140°C and a manufacturing method thereof. The ferrite material includes a main component and an auxiliary component, and the main component is Fe2O3: x mol%, MnO: y mol%, ZnO: z mol%, the auxiliary component is Co2O3: c wt% based on the total weight of the main component, wherein the ratio of each component is x=53.5-54.5, z=5.5-7.5, y=100‑x -z, c=0.25-0.45, and have the relationship of 70≤A=2580-45x-9z≤100, -30≤B=150-3x-3y+371c≤30. Manganese-zinc ferrite materials are made through batching, mixing, pre-calcination, secondary grinding, granulation, molding, sintering and other process steps.

Description

technical field

[0001] The invention relates to a MnZn soft magnetic ferrite material and a manufacturing method, in particular to a Ni-free MnZn power ferrite material used at -20 to 140°C and a manufacturing method thereof, belonging to metal functional materials for electronic components New material high-tech field of manufacturing technology. Background technique

[0002] Soft magnetic ferrite is a kind of magnetic material with the most varieties, the most widely used and the largest consumption, and it is an important basic functional material in the electronic information industry. In the production and use of soft magnetic ferrite, MnZn ferrite is dominant, and the output of MnZn ferrite accounts for about 70% of the total output of soft ferrite. It is currently the most concerned and active soft magnetic material. field. In recent years, the development of MnZn ferrite materials has shifted from the in-depth improvement of a single performance to the horizontal e...

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