High magnetic energy product material and preparation method

Abstract

The invention provides a high magnetic energy product material and a preparation method. The method comprises following steps of preparing materials according to following mass percent: 24-28% of Nd, 5.2-5.8% of Ce, 1.6-1.9% of Eu, 0.6-0.9% of Sn, 3-7% of B, 0.08-0.12% of P, 0.005-0.007% of Au, 0.7-0.9% of Ni and 0.045-0.060% of In, and the remainder being Fe; adding the prepared raw materials to the crucible in a vacuum induction furnace; heating to 1500-1530 degrees centigrade; keeping warm for 20 minutes; pouring the prepared materials into an ingot mould; naturally cooling, thus obtaining alloy ingot containing rare earth materials; carrying out tape preparation, preprocessing, nitriding, powder preparation, compression moulding and sintering technologies on the prepared alloy ingot containing the rare earth materials, thus obtaining the high magnetic energy product material.

Description

technical field

[0001] The invention belongs to the field of metal materials, and relates to a high magnetic energy product material and a preparation method. Background technique

[0002] Application No. CN03150162.1 provides a method for preparing SmFeN permanent magnet material by mechanical alloying method, which solves the problems of complicated process, difficult infiltration and retention of nitrogen and high cost in the preparation of SmFeN.

[0003] The process for preparing the SmFeN permanent magnet material is as follows: the pure Sm powder and Fe powder are based on the composition of Sm2Fe17 and the Sm powder ratio of 1-30 mass% is added on the basis of Sm2Fe17, that is, the final mass percentage is 25-30% Sm, 70- 75% Fe. In order to increase the infiltration amount of nitrogen, an element (such as at least one of Cr, Ni, Co, etc.) that promotes nitriding can also be added, and the mass percentage is 0.1-2% of the total amount of SmFe. After preliminarily mi...

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