Soft magnetic material with high magnetic permeability, high frequency and high impedance and preparation method thereof
A technology of soft magnetic material and high magnetic permeability, applied in the field of high-frequency high-impedance soft magnetic material and high magnetic permeability, can solve the problems of high-frequency impedance, large core volume, and many coils, etc. Good high-frequency filtering effect, less coil turns, and low cost
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[0051] Correspondingly, the present invention also provides a method for preparing a soft magnetic material with high magnetic permeability, high frequency and high impedance characteristics, including:
[0052] Step A: Proportion the content of main ingredients, then add deionized water to the sand mill for mixing and crushing, and add PVA solution after recirculation mixing;
[0053] In the step A: the crushing lasts for 25-35 minutes, and the circular mixing lasts for 8-15 minutes, which can improve the crushing effect, optimize the main component process and physical and chemical properties.
[0054] Step B: putting the crushed and mixed main ingredients into a pre-burning furnace for pre-burning;
[0055] In the step B: the temperature in the pre-sintering furnace is controlled at 850-950° C., and the pre-sintering furnace is kept warm for 2.5-3.5 hours, which can further optimize the main component process and physical and chemical properties, and improve the crystal str...
Embodiment 1
[0068] 1. Ingredients:
[0069] Weigh Fe 2 o 3 :51.5mo1%; ZnO:21.3mo1%; MnO:27.2mo1%, the three raw materials are Taiwan Zhongganghong, Hunan Jinrui Sanmeng Tetroxide, Shanghai Jinghua Zinc Oxide, and add 15wt% ionized water into the sand mill Perform mixing and crushing, crushing for 45 minutes, carry out circulation mixing for 10 minutes, add 1.4wt% PVA solution, and carry out spray granulation.
[0070] 2. Pre-burning:
[0071] Put the spray material into the pre-fired furnace, and keep it warm at 860°C for 3 hours for pre-fired.
[0072] 3. Secondary sanding:
[0073] Add the following auxiliary component Nb according to the weight percentage of calcined material in calcined material 2 o 5 0.020wt%, CaO 0.04wt%, MoO 3 0.03wt%, V 2 o 5 is 0.02wt%, and ZrO is 0.02wt%.
[0074] Then put the powder into a sand mill and add 15wt% deionized water for secondary sand milling, the sand milling time is 60 minutes, and the particle size of the powder is controlled at 0.9-1....
Embodiment 2
[0084] 1. Ingredients:
[0085] Weigh Fe 2 o 3: 51.35mol%; ZnO: 21.3mol%; MnO: 27.45mol%, the three raw materials are Korean EG Iron Red, Hunan Jinrui Sanmeng Tetroxide, Shanghai Jinghua Zinc Oxide, and add 15wt% ionized water into the sand mill Mixing and crushing were carried out, crushing was carried out for 45 minutes, 1.4 wt% PVA solution was added after circulating and mixing for 10 minutes, and spray granulation was carried out.
[0086] 2. Pre-burning:
[0087] Put the sprayed material into the pre-fired furnace, and heat it at 860°C for 3 hours for pre-fired.
[0088] 3. Secondary sanding:
[0089] Add the following auxiliary component Nb according to the weight percentage of calcined material in calcined material 2 o 5 0.020wt%, CaO 0.04wt%, MoO 3 0.03wt%, V 2 o 5 is 0.02wt%, and ZrO is 0.02wt%. Then put the powder into a sand mill and add 15wt% deionized water for secondary sand milling, the sand milling time is 60 minutes, and the particle size of the pow...
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