A magnetic recording material and a preparation method thereof
A magnetic recording and oxide technology, applied in magnetic recording, data recording, recording information storage, etc., can solve the problems of coercivity, remanence, and steep hysteresis loop performance, etc., to avoid coercivity The effect of excessive force, fine particle size, and improvement of uniform dispersion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0052] The present invention also provides a method for preparing the magnetic recording material, comprising the steps of:
[0053] The raw materials are mixed in proportion, densified, pelletized, pre-fired at 1050-1200° C. for 1-4 hours, coarsely crushed and then finely ground, and tempered at 960-1020° C. for 1-4 hours to obtain the magnetic recording material.
[0054] In a preferred embodiment of the present invention, after pre-burning at 1050-1100°C for 1-2 hours, the temperature is raised to 1150-1200°C for 1-2 hours.
[0055] In a preferred embodiment of the present invention, the densification treatment includes: using an ore mill for densification treatment for 30-90s.
[0056] In a preferred embodiment of the present invention, the size of the pelletized pellets is 50-500 μm.
[0057] In a preferred embodiment of the present invention, after pre-calcination, it is coarsely crushed to a particle size of 2.0-2.2 μm.
[0058] In a preferred embodiment of the presen...
Embodiment 1
[0061] The preparation method of the magnetic recording material described in the present embodiment, the steps are as follows:
[0062] (1) In parts by weight, weigh 135 parts of iron red (Tangshan Iron and Steel Group), 25 parts of strontium carbonate, 30 parts of barium carbonate, 1.2 parts of samarium oxide, 1.2 parts of titanium oxide, 1.6 parts of cobalt oxide, and 1.6 parts of zirconium oxide , 1.6 parts of nickel oxide, and 2 parts of bismuth trioxide, mixed and placed in an ore mill, after densification treatment for 60 seconds, pelletized with water, the size of the pellets is 200 μm;
[0063] (2) The pellets obtained in step (1) were pre-calcined at 1080°C for 2 hours, and after the pre-calcination was completed, they were coarsely crushed with a ball mill until the average particle size was 2.0 μm;
[0064] (3) placing the coarsely crushed material obtained in step (2) in a ball mill, and finely grinding it until the average particle size is 1.5 μm;
[0065] (4) T...
Embodiment 2
[0067] The present embodiment refers to the preparation method of Example 1, and the only difference is that the raw materials of this embodiment are 120 parts by weight of iron red (Tangshan Iron and Steel Group), 12 parts of strontium carbonate, 28 parts of barium carbonate, and 1 part of samarium oxide. 0.9 parts of titanium oxide, 1.7 parts of cobalt oxide, 1.7 parts of zirconium oxide, 1.7 parts of nickel oxide, and 1 part of bismuth trioxide.
PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More