Baiyun Obo co-associated raw ore mixed rare earth permanent magnet material and preparation method thereof
A technology of mixed rare earth and rare earth permanent magnets, applied in the fields of magnetic materials, inorganic material magnetism, inductance/transformer/magnet manufacturing, etc., can solve the problems of ecological environment pollution, resource waste, not considering the co-associated natural formula properties of rare earth elements, etc. Achieving the effect of low price and reducing environmental pollution
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Embodiment 1
[0062] A kind of sintered rare earth permanent magnet material directly prepared by using Baiyan Obo co-associated raw ore mixed rare earth.
[0063] The ingredients are as follows according to Table 2:
[0064] Table 2
[0065] Element
[0066] Using powder metallurgy technology, the raw materials containing a certain proportion, such as Baiyun Obo co-associated raw ore mixed rare earth, ferroboron, etc., are smelted into alloy steel ingots by induction melting furnace, and then crushed to make 3-5μm powder, and NdCu is added to it Nano auxiliary alloy particles, wherein the addition of NdCu nano auxiliary alloy particles is as shown in Table 3 based on the weight of the alloy steel ingot as 100%, and the weight percentage is as shown in Table 3, and it is pressed and formed in a magnetic field. After forming, it is sintered and compacted in a vacuum furnace. Temper. The magnetic performance test results of the obtained rare earth permanent magnet materials are sh...
Embodiment 2
[0071] Table 4
[0072] method
[0073] It can be seen from Table 4 of Example 2 that under the same formula and process conditions, the performance of using common mixed rare earths is far lower than that of using Baiyan Obo co-associated ore mixed rare earths.
Embodiment 3
[0075] table 5
[0076] method
[0077] From Table 5 of Example 3, it can be seen that under the condition of similar magnet performance, the utilization rate of lanthanum in the mixed rare earths in the Baiyan Obo co-associated ore is 10 times that of adding lanthanum alone, which can effectively solve the problem of comprehensive utilization of high-abundance rare earths . And the performance of using common mixed rare earths is far lower than that of using Baiyan Obo co-associated raw ore mixed rare earths.
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