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Preparation method of terbium target blank

A target billet and casting billet technology, which is applied in the field of terbium target billet preparation, can solve problems such as short service life, small size, and poor target quality, and achieve the effects of increased service life, good uniformity, and improved utilization rate

Pending Publication Date: 2021-12-28
宁波江丰热等静压技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a method for preparing a terbium target blank, which solves the problems of poor quality and short service life of the currently prepared target material, and at the same time improves the efficiency of the terbium target material in use. The precision in the process also makes the grain size in the obtained terbium target blank more uniform, and the grains become smaller at the same time

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  • Preparation method of terbium target blank

Examples

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Effect test

Embodiment 1

[0040] This embodiment provides a method for preparing a terbium target blank, the preparation method comprising the following steps:

[0041] (1) Carry out the first heat treatment and the first forging stretching in sequence to obtain the raw material; the temperature of the heat treatment is 600°C; the holding time of the heat treatment is 3h; Rough and elongated; the first forging is carried out twice; the first forging is carried out under a protective atmosphere; the protective gas in the protective atmosphere is nitrogen; the end point of the upsetting is the height of the upsetting blank Stop at 40%, the end point of the elongation is to stop when the elongation reaches twice the height of the original billet, and start the next round of forging;

[0042] (2) Carrying out the second heat treatment and the second forging and stretching sequentially on the primary material obtained in step (1) to obtain the intermediate material; the temperature of the second heat treatm...

Embodiment 2

[0046] This embodiment provides a method for preparing a terbium target blank, the preparation method comprising the following steps:

[0047] (1) Carry out the first heat treatment and the first forging stretching in sequence to obtain the raw material; the temperature of the heat treatment is 500°C; the heat preservation time of the heat treatment is 4h; Rough and elongated; the first forging is carried out 3 times; the first forging is carried out under a protective atmosphere; the protective gas in the protective atmosphere is argon; the end point of the upsetting is the height of the upsetting blank Stop at 30% of the height, and the end point of the elongation is to stop when the elongation reaches twice the height of the original billet, and start the next round of forging;

[0048] (2) Carrying out the second heat treatment and the second forging and stretching of the primary material obtained in step (1) in sequence to obtain the intermediate material; the temperature...

Embodiment 3

[0051] This embodiment provides a method for preparing a terbium target blank, the preparation method comprising the following steps:

[0052] (1) Carry out the first heat treatment and the first forging stretching in sequence to obtain the raw material; the temperature of the heat treatment is 700°C; the heat preservation time of the heat treatment is 2h; Rough and elongated; the first forging is carried out twice; the first forging is carried out under a protective atmosphere; the protective gas in the protective atmosphere is a mixed gas of nitrogen and neon; the end point of the upsetting is Upsetting stops at 30% of the height of the original blank, and the end point of the elongation is stopped when the elongation reaches 1.5 times the height of the original blank, and starts the next round of forging;

[0053] (2) Carrying out the second heat treatment and the second forging and stretching to the initial material obtained in the step (1) successively to obtain the inter...

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Abstract

The invention relates to a preparation method of a terbium target blank. The preparation method comprises the following steps: (1) sequentially carrying out first heat treatment and first forging out on a casting blank to obtain a primary material; (2) performing second heat treatment and second forging out on the primary material obtained in the step (1) sequentially, and obtaining an intermediate material; and (3) rolling the intermediate material obtained in the step (2) to obtain a rolled material, and then carrying out third heat treatment on the rolled material to obtain the terbium target blank. According to the preparation method, the problems that a target material prepared at present is poor in quality and short in service life are solved, meanwhile, the precision of the terbium target material in the using process is improved, the grain size in the obtained terbium target blank is more uniform, and meanwhile grains become finer.

Description

technical field [0001] The invention relates to the field of target materials, in particular to a method for preparing a terbium target blank. Background technique [0002] At present, in the preparation of permanent magnet materials such as NdFeB, surface infiltration of terbium is required to replace the doping of terbium in the material, so as to reduce the amount of Tb used. The purity of conventionally used terbium targets is between 99.5% and 99.99%. [0003] For example, CN110983277A discloses a method for preparing a rotating rare earth target for NdFeB permanent magnet materials, comprising the following steps: (1) providing a cylindrical or tubular metal material as a target substrate, and Sandblasting the surface of the tube; (2) providing rare earth metal powder or rare earth alloy powder with an average particle diameter D50 of 10 to 80 μm, the rare earth metal powder being one of dysprosium, terbium or praseodymium, and the rare earth alloy powder being An al...

Claims

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Application Information

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IPC IPC(8): C23C14/34C22F1/16C21D9/00B23P15/00
CPCC23C14/3414C23C14/3407C22F1/16C21D9/0068B23P15/00
Inventor 姚力军潘杰王学泽曹欢欢王玉辉
Owner 宁波江丰热等静压技术有限公司