NiZn soft magnetic ferrite material with high magnetic conductivity and high Curie temperature and its preparing method
A technology of soft magnetic ferrite and high magnetic permeability, applied in the direction of magnetic properties of inorganic materials, can solve the problems of low practical value, achieve high magnetic permeability, increase Curie temperature, and improve the effect of microstructure
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[0019] A NiZn soft magnetic ferrite material with high magnetic permeability and high Curie temperature is made of metal oxides by oxide wet process, wherein the metal oxide raw materials include Fe 2 o 3 , NiO, ZnO and CuO, characterized in that the oxide raw material also includes WO as a dopant 3 , the content of each component: Fe 2 o 3 50.5mol%, NiO 14mol%, ZnO 32mol%, CuO 3.5mol%, WO 3 At 0.2 mol%.
[0020] Taking the preparation of NiZn ferrite with an initial magnetic permeability of 3000 as an example, the preparation method is as follows:
[0021] Step 1. Press Fe 2 o 3 : NiO: ZnO: CuO=50.5mol%: 14mol%: 32mol%: 3.5mol% formula ratio, weigh Fe 2 o 3 , NiO, ZnO and CuO oxide raw materials, mixed evenly by a ball mill, and then dried in an oven at about 100 °C.
[0022] Step 2: Place the dried material obtained in Step 1 into a sintering bowl for compaction and punching holes, raise the temperature at 3°C / min to the pre-burning temperature point of 1050°C, keep...
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