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Preparation method of terbium-iron alloy

A terbium-iron alloy and equipment technology, applied in the field of preparation of terbium-iron alloy, can solve the problems of polluting the environment, high production cost, long cycle and the like

Pending Publication Date: 2022-07-05
中天捷晟(天津)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this preparation method are: high production cost, many processes, long cycle, expensive equipment, and serious environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] The invention provides a preparation method of terbium iron alloy, the specific steps are:

[0015] S1, raw material preparation

[0016] The raw materials to be prepared include terbium fluoride powder, metal calcium particles, iron powder and NaCl powder. According to the content ratio of the two components in the terbium-iron alloy to be prepared and the corresponding relationship in the reduction reaction, calculate the terbium fluoride powder, metal calcium Calculate the dosage of terbium fluoride powder, metallic calcium grains and iron powder by calculating the dosage of terbium fluoride powder, metal calcium grains and iron powder;

[0017] Wherein, the actual consumption of the terbium fluoride powder is consistent with its calculation result, the actual consumption of the metal calcium particles is 1.25 times of its calculation result, the actual consumption of the iron powder is consistent with its calculation result, the actual consumption of the NaCl powder...

Embodiment 1

[0026] Add 2kg of terbium fluoride powder, 1kg of iron powder, 0.7kg of metal calcium particles, and 0.14kg of NaCl powder into the mixer and mix them evenly, then put them into a tungsten crucible in a vacuum induction device, evacuate below 10Pa, and then fill with argon The argon gas was washed with argon. After the argon was washed twice, the equipment was checked for leaks. After passing the leak check, it was heated to 1400-1500 ° C under the protection of argon, kept for 10 minutes, and then cast. After cooling with the furnace equipment, the slag was taken out and separated to obtain Metal after preliminary separation;

[0027] Put the preliminarily separated metal into the tungsten crucible in the vacuum induction equipment again, evacuate to less than 10Pa, and then fill with argon to carry out argon washing. After argon washing twice, carry out equipment leak detection. Refining and impurity removal was carried out under the protection of argon gas. During the refin...

Embodiment 2

[0029] Add 2kg of terbium fluoride powder, 0.8kg of iron powder, 0.7kg of metal calcium particles, and 0.14kg of NaCl powder into the mixer and mix them evenly, then put them into a tungsten crucible in a vacuum induction device, evacuate below 10Pa, and then fill with argon The argon gas was washed with argon. After the argon was washed twice, the equipment was checked for leaks. After passing the leak check, it was heated to 1400-1500 ℃ under the protection of argon, kept for 5 minutes, and then cast. After cooling with the furnace equipment, the slag was taken out and separated. Obtain the metal after preliminary separation;

[0030] Put the preliminarily separated metal into the tungsten crucible in the vacuum induction equipment again, evacuate to less than 10Pa, and then fill with argon to carry out argon washing. After argon washing twice, carry out equipment leak detection. Refining and removing impurities were carried out under the protection of argon gas. During the ...

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Abstract

The invention belongs to the technical field of rare earth iron alloy preparation, and particularly relates to a preparation method of terbium iron alloy. The preparation method of the terbium-iron alloy comprises the specific steps that 2 kg of terbium fluoride powder, 0.8 kg of iron powder, 0.7 kg of metal calcium particles and 0.14 kg of NaCl powder are added into a mixing machine to be evenly mixed, then the mixture is added into a tungsten crucible of vacuum induction equipment, argon washing, leak detection and argon filling are sequentially conducted after the vacuum degree is lower than 10 Pa, then heating is started to conduct thermal reduction operation, casting is conducted, and the terbium-iron alloy is obtained. And after the furnace equipment is cooled, taking out and separating slag to obtain primarily separated metal, putting the primarily separated metal into the tungsten crucible of the vacuum induction equipment again, sequentially carrying out argon washing, leakage detection and argon filling after the vacuum degree is lower than 10Pa, then carrying out refining and impurity removal, keeping for 20-30 minutes after materials are completely molten, and casting into a metal ingot after impurity removal to obtain the terbium-iron alloy. The preparation method provided by the invention reduces preparation procedures and has simple steps.

Description

[0001] This application is a divisional application with an application date of January 24, 2022, an application number of 202210077010.X, and the title of the invention "A preparation method of terbium iron alloy". technical field [0002] The invention belongs to the technical field of preparation of rare earth iron alloys, in particular to a preparation method of terbium iron alloys. Background technique [0003] Rare earth iron alloy is a combination of rare earth element and iron element. The content of rare earth element is different due to different uses of rare earth alloy. Among them, terbium iron alloy is an important one of rare earth iron alloy. [0004] At present, the traditional preparation method of terbium-iron alloy is roughly as follows: first, rare earth fluoride is prepared by vacuum calcium thermal reduction method to obtain pure metal terbium, and then eutectic with pure iron rods according to a certain proportion, and smelted into terbium-iron alloys w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C28/00
CPCC22C1/02C22C28/00Y02P10/25
Inventor 杨树峰杨培生郭树一
Owner 中天捷晟(天津)新材料科技有限公司
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