Ferro-cerium-based rapid quenching permanent magnet powder and preparation method of ferro-cerium-based rapid quenching permanent magnet powder

A technology of cerium-iron-based permanent magnet powder, which is applied in the field of cerium-iron-based quick-quenching permanent magnet powder and its preparation, to achieve the effects of being suitable for engineering production, saving production time and energy consumption, and reducing melting temperature and time

Active Publication Date: 2014-04-09
CENT IRON & STEEL RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, there has been no report on the use of high Ce in cerium-iron-based quick-quenching permanent magnet powder.

Method used

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  • Ferro-cerium-based rapid quenching permanent magnet powder and preparation method of ferro-cerium-based rapid quenching permanent magnet powder
  • Ferro-cerium-based rapid quenching permanent magnet powder and preparation method of ferro-cerium-based rapid quenching permanent magnet powder
  • Ferro-cerium-based rapid quenching permanent magnet powder and preparation method of ferro-cerium-based rapid quenching permanent magnet powder

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Embodiment Construction

[0041] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] Using low temperature melting, rapid quenching process to prepare magnetic powder on copper alloy roll or molybdenum roll (such as figure 1 shown), the process steps are as follows:

[0043] Step 1: According to the composition chemical formula of mass percent: [Ce 100-x , Re x ] a Fe 100-a-b-c B b tm c Prepare raw materials (as shown in Table 1), wherein Re is one or more of Nd, Pr, Dy, Tb elements, and TM is one or more of Ga, Co, Cu, Nb, and Al elements.

[0044] Table 1 Alloy composition chemical formula of different embodiments

[0045]

nominal component

Example 1

(Ce 90 Nd 10 ) 30 Fe bal co 4 Ga 0.4 B 0.92

Example 2

(Ce 70 Nd 30 ) 30 Fe bal co 3.9 Ga 0.4 Cu 0.1 B 0.92

Example 3

(Ce 50 Nd 50 ) 30 Fe bal...

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Abstract

The invention relates to ferro-cerium-based rapid quenching permanent magnet powder and a preparation method of the ferro-cerium-based rapid quenching permanent magnet powder. The alloy composition chemical formula of the ferro-cerium-based rapid quenching permanent magnet powder is [Ce100-x, Rex]aFe100-a-b-cBbTMc, wherein the x is the mass percent of the rare earth gross, the a, the b and the c show the mass percents of corresponding elements respectively, 0<=x<=50%, 27.5%<=a<=32%, 0.8%<=b<=1.5%, 0.5%<=c<=5%, the Re is one or more of Nd, Pr, Dy and Tb, and the TM is one or more of Ga, Co, Cu, Nb and Al. According to the preparation method, the ferro-cerium-based rapid quenching permanent magnet powder and Re'-Fe-B without Ce can be prepared with a water-cooling electromagnetic roller (a copper alloy roller or a molybdenum roller), and a ferro-cerium-based hot-pressing magnet with double hard magnetic principal phases or multiple hard magnetic principal phases can be prepared with the two kinds of magnetic powder. The ferro-cerium-based rapid quenching permanent magnet powder fills up blanks of middle-grade magnet powder and lower-grade magnet powder on the market at present, the product performance cost ratio is high, and the ferro-cerium-based rapid quenching permanent magnet powder and the preparation method are suitable for engineering production.

Description

technical field [0001] The invention belongs to the technical field of rare earth permanent magnet materials, and in particular relates to a cerium-iron-based quick-quenching permanent magnet powder and a preparation method thereof. Background technique [0002] The quick-quenching permanent magnet powder is the core material of the hot-pressed / thermo-rheological permanent magnet, which determines the performance of the magnet. The hot-pressed / thermo-rheological process has the characteristics of simplicity, low temperature, short time, and near-net forming, especially in the radiation orientation and It is unique in the preparation of multi-pole oriented magnetic rings and nano-two-phase composite magnets. The metal neodymium Nd in the current hot-pressed / thermo-rheological NdFeB magnets accounts for more than 90% of the cost of raw materials. With the increasing production of rare earth permanent magnets in the world in recent years, the use of a large amount of metal neo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/053H01F1/08B22D11/06B22F1/00
Inventor 朱明刚李卫汪旭超赖彬孙威
Owner CENT IRON & STEEL RES INST
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