Preparation method of high-coercivity diffusion samarium-cobalt composite permanent magnet
A high coercivity, permanent magnet technology, used in magnetic objects, inductor/transformer/magnet manufacturing, magnetic materials, etc., can solve problems such as uneven distribution of soft and hard magnetic phases, and achieve improved coercivity and maximum magnetic energy product. , The experimental method is simple, and the effect of maintaining the magnetic properties
Image
Examples
Embodiment 1
[0021] Embodiment 1: a kind of preparation method of high coercive force diffused samarium cobalt permanent magnet, comprises the following steps:
[0022] Step (1) Preparation of diffusion source:
[0023] Mixing soft magnetic phase nanoscale Fe powder with organic solvent acetone to form a mixed solution of diffusion source;
[0024] Step (2) Preparation of samarium cobalt hard magnetic phase permanent magnet:
[0025] Preparation of samarium cobalt hard magnetic phase permanent magnet: according to (Sm, Tb) 1 (Co,Fe,Ni,Cu) 5 After the alloy components are mixed, the samarium cobalt permanent magnet is obtained through melting, hot pressing and heat treatment, in which the atomic ratio of Sm:Tb is 1:0.04, (Co,Fe,Ni,Cu) 5 The atomic proportion of Co in the medium is 70%;
[0026] Step (3) Laser perforation of samarium cobalt permanent magnet:
[0027] Using femtosecond to nanometer laser pulses, the laser wavelength is 820nm, the pulse duration is 300fs, the pulse intens...
Embodiment 2
[0035] Step (1) Preparation of diffusion source:
[0036] Mixing soft magnetic phase nanoscale Fe powder with organic solvent acetone to form a mixed solution of diffusion source;
[0037] Step (2) Preparation of samarium cobalt hard magnetic phase permanent magnet:
[0038] Preparation of samarium cobalt hard magnetic phase permanent magnet: according to (Sm, Gd) 1 (Co,Fe,Ni,Cu) 5 After the alloy components are mixed, the samarium-cobalt permanent magnet is obtained through smelting, hot pressing and heat treatment, in which the atomic ratio of Sm:Tb is 1:0.08, (Co,Fe,Ni,Cu) 5 The atomic proportion of Co in the medium is 90%;
[0039] Step (3) Laser perforation of samarium cobalt permanent magnet:
[0040] Using femtosecond to nanometer laser pulses, the laser wavelength is 820nm, the pulse duration is 300fs, the pulse intensity is 200uJ, the spot size is 7μm, and the surface of a samarium cobalt magnet with a size of 20mm×20mm×20mm is perforated. The shape of the hole is...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Wavelength | aaaaa | aaaaa |