A method for preparing SMCO/CO nanocomposite magnetic materials by microwave calcithermic reduction
A nano-composite and magnetic material technology, applied in the direction of magnetic materials, magnetic objects, inductors/transformers/magnets, etc., can solve the problems of difficult preparation of magnetic nano-composites and complex processes, and achieve low cost, simple process, and high magnetic performance. Improved effect
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Embodiment 1
[0031] (1) Get a 250mL three-necked flask and place it in an ultrasonic water bath, and add SmCl with a purity of 99% to the three-necked flask 3 ·6H 2 O 0.55 g of CoCl with a purity of 99.99% 2 ·6H 2 O 1.43g, then add 100mL deionized water in the three-necked flask, and mechanically stir for 10 minutes.
[0032] (2) After mechanical stirring for 10 minutes, turn on the ultrasonic instrument, and add 10 mL of 3.5 mol / L NaOH solution into the three-neck flask.
[0033] (3) After reacting for 1 hour, add 150 mL of deionized water to the reaction liquid to dilute the solution, then transfer it to 6 centrifuge tubes, centrifuge at 7500 rpm for 3 minutes, pour off the supernatant and keep the precipitate in the centrifuge tube Add deionized water to the centrifuge tube, ultrasonically clean for 5 minutes, centrifuge at 7500 rpm for 3 minutes, pour off the supernatant and keep the precipitate in the centrifuge tube; then add absolute ethanol to the centrifuge tube, and ultrasonic...
Embodiment 2
[0039] (1) Get a 250mL three-necked flask and place it in an ultrasonic water bath, and add SmCl with a purity of 99% to the three-necked flask 3 ·6H 2 O 0.55 g of CoCl with a purity of 99.99% 2 ·6H 2 O 1.43g, then add 100mL deionized water in the three-necked flask, and mechanically stir for 10 minutes.
[0040] (2) Turn on the ultrasonic device, keep mechanical stirring, and add 10 mL of 3.5 mol / L NaOH solution into the three-necked flask.
[0041] (3) After reacting for 1 hour, add 150 mL of deionized water to the reaction liquid to dilute the solution, then transfer to 6 centrifuge tubes, centrifuge at 7500 rpm for 3 minutes, pour off the supernatant and keep the precipitate in the centrifuge tube Add deionized water to the centrifuge tube, ultrasonically clean for 5 minutes, centrifuge at 7500 rpm for 3 minutes, pour off the supernatant and keep the precipitate in the centrifuge tube; then add absolute ethanol to the centrifuge tube, and ultrasonically clean for five m...
Embodiment 3
[0047] (1) Get a 250mL three-necked flask and place it in an ultrasonic water bath, and add SmCl with a purity of 99% to the three-necked flask 3 ·6H 2 O 0.55 g of CoCl with a purity of 99.99% 2 ·6H 2 O 1.30g, then add 100mL deionized water to the three-necked flask, and mechanically stir for 10 minutes.
[0048] (2) After mechanical stirring for 10 minutes, turn on the ultrasonic instrument, and add 10 mL of 3.5 mol / L NaOH solution into the three-neck flask.
[0049] (3) After reacting for 1 hour, add 150 mL of deionized water to the reaction liquid to dilute the solution, then transfer to 6 centrifuge tubes, centrifuge at 7500 rpm for 3 minutes, pour off the supernatant and keep the precipitate in the centrifuge tube Add deionized water to the centrifuge tube, ultrasonically clean for 5 minutes, centrifuge at 7500 rpm for 3 minutes, pour off the supernatant and keep the precipitate in the centrifuge tube; then add absolute ethanol to the centrifuge tube, and ultrasonicall...
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