Preparation method for quickly quenched Fe-based metal grain with excellent wave absorbing property
A technology of base metal and magnetic metal, which is applied in the field of preparation of rapidly quenched Fe-based metal particle materials, can solve the problem of non-reflection absorption, etc., and achieve the effect of high practical value, correct principle and scientific means.
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[0022] Example 1:
[0023] (1) The proportion of high-purity iron rods (99.9wt%) is 65-70%, the proportion of neodymium blocks (99.9wt%) is 2-4%, the proportion of analytically pure cobalt flakes (99.8wt%) is 16-20%, and the proportion of analytically pure The proportion of boron (99.8wt%) is 9-13%, and the metal of the corresponding quality is weighed according to the atomic percentage of each element in the alloy to form a magnetic metal alloy, which is smelted in a high-frequency induction melting furnace to obtain an alloy ingot , In order to ensure the uniformity of the composition, the smelting is repeated twice.
[0024] The strip is melted in a vacuum quick quenching furnace. Put the alloy ingot into the crucible, and in the state of being filled with argon after vacuuming, the alloy ingot is melted by the high-voltage arc of the tungsten-cerium electrode, and the molten solution is thrown into thin strips by the high-speed rotating molybdenum wheel. Then, the obtain...
Example Embodiment
[0034] Example 2:
[0035] The method for preparing the Nd-Fe-Co-based magnetic metal particle material in Example 1 is the same, but the ultrasonic frequency is set to 3.0 GHz, and the ultrasonic time is 30 min. The prepared Nd-Fe-Co-based magnetic metal particles and the untreated Nd-Fe-Co-based magnetic metal particles (film thickness 1.5 mm) were calculated according to the line transmission theory and the reflection loss was compared (see figure 2 ) and obtained the same conclusion as in Example 1.
Example Embodiment
[0036] Example 3:
[0037] The method for preparing the Nd-Fe-Co-based magnetic metal particle material in Example 1 is the same, but the ultrasonic frequency is set to 3.5 GHz, and the ultrasonic time is 40 min. The prepared Nd-Fe-Co-based magnetic metal particles and the untreated Nd-Fe-Co-based magnetic metal particles (film thickness 1.5 mm) were calculated according to the line transmission theory and the reflection loss was compared (see image 3 ) and obtained the same conclusion as in Example 1.
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