A method for preparing soft magnetic composite materials by hot pressing
A composite material and soft magnetic technology, which is applied in the direction of inorganic material magnetism, inductance/transformer/magnet manufacturing, electrical components, etc., can solve the problems of lower energy utilization rate, high price, and large energy consumption, so as to improve energy utilization rate, The effect of excellent mechanical properties and good magnetic properties
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Embodiment 1
[0036] 1) Weigh 100g of iron-silicon alloy particles with a particle size of 30μm and pour them into a 1000mL Erlenmeyer flask, add 500mL of medium (ethanol:distilled water=4:1) into the Erlenmeyer flask, and ultrasonically disperse for 15min;
[0037] Heat and stir the Erlenmeyer flask in a 60°C water bath. After 30 minutes, add 0.2g of silane coupling agent KH-560, continue heating and stirring, and react for 4h~5h;
[0038] The Erlenmeyer flask was taken out and separated with a magnet. Place the magnet at the bottom of the beaker, and after the magnetic particles settle rapidly at the bottom, slowly pour out the solution, leaving only the magnetic particles, and then wash the separated magnetic nanoparticles with absolute ethanol for 5 to 6 times under the action of a magnetic field. Fully wash away the unreacted silane coupling agent.
[0039] Place the washed magnetic particles in a vacuum oven for drying. After sufficient drying, the soft magnetic particles modified b...
Embodiment 2
[0049] 1) Weigh 100g of ferrite particles with a particle size of 2μm and pour them into a 1000mL Erlenmeyer flask, add 500mL of medium (ethanol:distilled water=4:2) into the Erlenmeyer flask, and ultrasonically disperse for 15min;
[0050] Heat and stir the Erlenmeyer flask in a water bath at 60°C. After 30 minutes, add 0.1 g of silane coupling agent KH-550, continue heating and stirring, and react for 4 hours;
[0051]The Erlenmeyer flask was taken out and separated with a magnet. Place the magnet at the bottom of the beaker, and after the magnetic particles quickly settle at the bottom, slowly pour out the solution, leaving only the magnetic particles, and then wash the separated magnetic nanoparticles with absolute ethanol for 5 times under the action of a magnetic field, and wash thoroughly. Remove unreacted silane coupling agent KH-550.
[0052] Place the washed magnetic particles in a vacuum oven for drying. After sufficient drying, the soft magnetic particles modifie...
Embodiment 3
[0061] 1) Weigh 100g of iron-silicon alloy particles with a particle size of 200μm and pour them into a 1000mL Erlenmeyer flask, add 500mL of medium (ethanol:distilled water=4:1) into the Erlenmeyer flask, and ultrasonically disperse for 15min;
[0062] Heat and stir the Erlenmeyer flask in a water bath at 60°C. After 30 minutes, add 0.1 g of oleic acid, continue heating and stirring, and react for 4 hours;
[0063] The Erlenmeyer flask was taken out and separated with a magnet. Place the magnet at the bottom of the beaker, and after the magnetic particles settle rapidly at the bottom, slowly pour out the solution, leaving only the magnetic particles, and then wash the separated magnetic nanoparticles with absolute ethanol for 5 to 6 times under the action of a magnetic field. Fully wash away unreacted oleic acid.
[0064] Place the washed magnetic particles in a vacuum oven for drying. After drying sufficiently, grind to obtain soft magnetic particles modified with oleic ac...
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