Thin-filmed compound broadband anti-electromagnetic interference magnetic powder and preparation method thereof
An anti-electromagnetic interference and broadband technology, applied in the field of soft magnetic anti-electromagnetic interference materials, can solve the problems that soft magnetic alloy materials cannot be used in high-frequency bands, achieve good low-frequency characteristics, be easy to implement, and reduce eddy currents.
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Embodiment 1
[0029] Step (1). Adopt distilled water preparation to contain FeCl 2 、NiCl 2 and ZnCl 2 The first reaction solution, where FeCl 2 The concentration is 0.04mol / L, NiCl 2 The concentration is 0.01mol / L, ZnCl 2 The concentration is 0.01mol / L, and the first reaction solution is protected by nitrogen gas during the placement process;
[0030] Step (2). Using distilled water to prepare a second reaction solution containing KOH, the concentration of KOH is 0.12mol / L;
[0031] Step (3). Make the thickness 0.5~1 , cross-sectional area of 50 to 500 Add the flaky Co powder into distilled water to obtain a mixed solution with a Co concentration of 0.5kg / L;
[0032] Step (4). The mixed solution is mechanically stirred at 60°C, and the mechanical stirring speed is 500 rpm. At the same time, the first reaction solution and the second reaction solution are dropped into the first reaction solution and the second reaction solution at the same flow rate through the peristaltic pump fo...
Embodiment 2
[0038] Step (1). Adopt distilled water preparation to contain FeCl 2 , MnCl 2 and ZnCl 2 The first reaction solution, where FeCl 2 The concentration is 0.06mol / L, MnCl2 The concentration is 0.015mol / L, ZnCl 2 The concentration is 0.015mol / L, and the first reaction solution is protected by nitrogen gas during the placement process;
[0039] Step (2). Using distilled water to prepare a second reaction solution containing KOH, the concentration of KOH is 0.162mol / L;
[0040] Step (3). Make the thickness 0.5~1 , cross-sectional area of 50 to 500 Add the flaky Ni powder into distilled water to obtain a mixed solution with a Ni concentration of 0.1kg / L;
[0041] Step (4). The mixed solution is mechanically stirred at 80°C, and the mechanical stirring speed is 400 rpm. At the same time, the first reaction solution and the second reaction solution are dropped into the first reaction solution and the second reaction solution at the same flow rate through the peristaltic pump ...
Embodiment 3
[0047] Step (1). Adopt distilled water preparation to contain FeCl 2 、NiCl 2 , CuCl 2 , ZnCl 2 The first reaction solution, where FeCl 2 The concentration is 0.06mol / L, NiCl 2 The concentration is 0.01mol / L, CuCl 2 The concentration is 0.01mol / L, ZnCl 2 The concentration is 0.01mol / L, and the first reaction solution is protected by nitrogen gas during the placement process;
[0048] Step (2). Using distilled water to prepare a second reaction solution containing KOH, the concentration of KOH is 0.198mol / L;
[0049] Step (3). Make the thickness 0.5~1 , cross-sectional area of 50 to 500 The flaky Fe powder is added in distilled water to obtain a mixed solution with a Fe concentration of 1kg / L;
[0050] Step (4). The mixed solution was mechanically stirred at 70°C, and the mechanical stirring speed was 300 rpm. At the same time, the first reaction solution and the second reaction solution were dropped into the first reaction solution and the second reaction solution ...
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