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Preparation method of FeCo alloy absorbing material

A technology of wave-absorbing materials and alloys, applied in the field of magnetic wave-absorbing materials

Inactive Publication Date: 2014-03-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Iron-based materials and ferrite are typical magnetic loss absorbing materials, but the use of ferrite is greatly limited due to its high density and high mass filling rate

Method used

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  • Preparation method of FeCo alloy absorbing material
  • Preparation method of FeCo alloy absorbing material
  • Preparation method of FeCo alloy absorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of FeCo alloy wave-absorbing material, comprising the steps of:

[0033] Step 1, weigh 8 g of ferrous sulfate and 8 g of cobalt chloride respectively and place them in a three-necked flask, add 100 mL of distilled water to the flask to obtain the initial solution, and magnetically stir the solution for 5 minutes;

[0034] Step 2, under a nitrogen protection environment, 5 g of sodium hydroxide is added to the solution treated in step 1, and at the same time, 50 mL of hydrazine hydrate is quickly added to the solution, wherein the mass percentage of hydrazine hydrate is 85%;

[0035] In step 3, the solution treated in step 2 is subjected to ultrasonic treatment, the time of ultrasonic treatment is 1 h, and the temperature of ultrasonic treatment is 70°C;

[0036] Step 4: Cool the ultrasonically treated solution to room temperature, wash with distilled water and absolute ethanol three times respectively, and then dry to obtain the desired product. The...

Embodiment 2

[0038] A preparation method of FeCo alloy wave-absorbing material, comprising the steps of:

[0039] Step 1, weigh 9 g of ferrous sulfate and 9 g of cobalt chloride respectively and place them in a three-necked flask, add 100 mL of distilled water to the flask to obtain an initial solution, and magnetically stir the solution for 5 minutes;

[0040] Step 2, under a nitrogen protection environment, add 6 g of sodium hydroxide to the solution treated in step 1, and then quickly add 40 mL of hydrazine hydrate to the solution, wherein the mass percentage of hydrazine hydrate is 85%;

[0041] In step 3, the solution treated in step 2 is subjected to ultrasonic treatment, the time of ultrasonic treatment is 2 h, and the temperature of ultrasonic treatment is 50°C;

[0042] Step 4: Cool the ultrasonically treated solution to room temperature, wash with distilled water and absolute ethanol three times respectively, and then dry to obtain the desired product. The obtained product has th...

Embodiment 3

[0044] A preparation method of FeCo alloy wave-absorbing material, comprising the steps of:

[0045] Step 1, weigh 10 g of ferrous sulfate and 10 g of cobalt chloride respectively and place them in a three-necked flask, add 100 mL of distilled water to the flask to obtain an initial solution, and magnetically stir the solution for 5 minutes;

[0046] Step 2, under a nitrogen protection environment, add 6 g of sodium hydroxide to the solution treated in step 1, and then quickly add 45 mL of hydrazine hydrate to the solution, wherein the mass percentage of hydrazine hydrate is 85%;

[0047] In step 3, the solution treated in step 2 is subjected to ultrasonic treatment, the time of ultrasonic treatment is 3 h, and the temperature of ultrasonic treatment is 30°C;

[0048] Step 4: Cool the ultrasonically treated solution to room temperature, wash with distilled water and absolute ethanol three times respectively, and then dry to obtain the desired product. The obtained product has...

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Abstract

The invention discloses a preparation method of a FeCo alloy absorbing material with high saturation magnetization and excellent absorbing property. The method comprises the following steps: the raw material including ferrous sulfate and cobalt chloride is dissolved in distilled water to obtain an initial solution, and the initial solution is magnetically stirred; under the protection of nitrogen, the reaction is performed in the alkaline environment, and meanwhile, a reducing agent is added into the solution to realize thorough reaction; ultrasonic processing is performed for 1-3 hours during the reaction, and after the ultrasonic processing, the material is washed and dried to obtain the required product. The preparation method disclosed by the invention has the advantages that synthesis cycle is short, the productivity is high, the technical process is simple and the cost is low; the FeCo alloy absorbing material prepared through the preparation method disclosed by the invention has high saturation magnetization and excellent absorbing property.

Description

technical field [0001] The invention relates to a preparation method of a FeCo alloy wave-absorbing material with good performance, belonging to the field of magnetic wave-absorbing materials. Background technique [0002] With the rapid development of science and technology, people live in an environment full of electromagnetic radiation all the time, and electromagnetic interference poses an increasing threat to human health. Therefore, it is imperative to control electromagnetic radiation pollution. Absorbing material is one of the methods to prevent its pollution. Iron-based materials and ferrites are typical magnetic loss absorbing materials, but the use of ferrites is greatly limited due to their high density and high mass filling rate. Compared with ferrite, iron-based materials, especially iron-cobalt alloys, have higher saturation magnetization and magnetic loss capabilities, and the Curie temperature has also been significantly increased, and are often used in hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/10C22C33/02B22F9/24
Inventor 姬广斌吕华良李少佳王敏
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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