Rare earth permanent magnetic material Sm2(CoFeCuZr)17 and preparation method thereof

Abstract

The invention provides a rare earth permanent magnetic material Sm2(CoFeCuZr)17 which comprises the following components by weight percentage: 87-100% of main phase alloy, 0-10% of Gd or Er, and 0-3% of Dy or Ho, wherein the main phase alloy is a 2:17 sintered samarium cobalt based rare earth permanent magnetic material and comprises the following components by atomic weight percentage: 20-40% of Sm, 40-65% of Co, 0-10% of Cu, 0-5% of Zr and 10-20% of Fe. Compared with the prior art, the rare earth permanent magnetic material Sm2(CoFeCuZr)17 has the benefits that all properties can be covered by a preparation method according to different material property requirements of users without changing pulverization, forming, sintering or aging treatment, the production cycle is shortened, and the raw material cost and labor cost are lowered as compared with the common sintered 2:17 permanent magnet.

Description

technical field [0001] The invention relates to a rare earth permanent magnet material Sm 2 (CoFeCuZr) 17 method of preparation. Background technique [0002] Currently preparing Sm 2 (CoFeCuZr) 17 For permanent magnet materials, the corresponding material properties are obtained mainly through the adjustment of Sm, Cu, Fe, Co and Zr, which is called the single alloy method; there is also the addition of liquid phase to adjust the intrinsic coercive force. [0003] The above method, because it is one-to-one corresponding to the material, the product performance required by the user may reach as many as more than 20 types, so it is necessary to prepare more than 20 types of materials to meet the demand, and it is also necessary to control the particle size of the powder and the impact on the sintering process. In order to obtain the material, the process and aging must be adjusted continuously. The process is not only complicated, but the cost of raw materials is high. Du...

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Problems solved by technology

[0003] The above method, because it is one-to-one corresponding to the material, the product performance required by the user may reach as many as 20 kinds, so it is necessary to prepare more than 20 kinds of materials to meet the demand, and it is also necessary to control the particle size of the powder and the impact on the sintering. In order to obtain the material, the process and aging must be adjusted continuously. The process is not only complicated, but the cost of raw materials is high, and due to the complexity of the process, the production cycle is long and the labor cost is also high.

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