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Preparation method of terbium-iron alloy

A technology of terbium-iron alloy and iron powder, which is applied in the field of preparation of terbium-iron alloy, can solve the problems of expensive equipment, environmental pollution, and high production cost, and achieve the effect of improving high production cost

Inactive Publication Date: 2022-03-01
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

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Effect test

preparation example Construction

[0020] A kind of preparation method of terbium-iron alloy, concrete steps are:

[0021] S1. Raw material preparation

[0022] The raw materials that need to be prepared include terbium fluoride powder, metal calcium particles, iron powder and NaCl powder. Calculate the amount of terbium fluoride 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, The amount of metal calcium particles and iron powder, the calculation results of the amount of terbium fluoride powder, the calculation results of the amount of metal calcium particles, and the calculation results of the amount of iron powder are obtained;

[0023] Wherein, the actual amount of terbium fluoride powder is consistent with the calculation result of the terbium fluoride powder amount, the actual amount of calcium metal particles is 1.25 times the calculation result of the metal calcium particle amount; The calc...

specific Embodiment 1

[0031] Put 2 kg of terbium fluoride powder, 1 kg of iron powder, 0.7 kg of metal calcium particles, and 0.14 kg of NaCl powder into the mixer and mix evenly, then put it into the tungsten crucible in the vacuum induction device, evacuate to below 10Pa, and then fill Enter argon gas for argon flushing, argon flushing twice, and then carry out equipment leak detection. After the leak detection is qualified, heat it to 1400-1500°C under the protection of argon gas, keep it warm for 10 minutes, and then cast it. After cooling with the furnace equipment, take it out and Separation of slag to obtain metal after primary separation;

[0032] Put the metal after the preliminary separation into the tungsten crucible in the vacuum induction equipment again, evacuate to below 10Pa, then fill it with argon gas for argon washing, argon washing twice, and then carry out leak detection of the equipment, after the leak detection is qualified , under the protection of argon to carry out refinin...

specific Embodiment 2

[0035] Put 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 into the mixer and mix them evenly, then put them into the tungsten crucible in the vacuum induction equipment, evacuate to below 10Pa, and then fill the Carry out argon washing with argon, twice argon washing, and then carry out equipment leak detection. After passing the leak detection, heat it to 1400-1500°C under the protection of argon, keep it warm for 5 minutes, and then cast it. After cooling with the furnace equipment, take it out and separate it slag, to obtain the metal after primary separation;

[0036] Put the metal after the preliminary separation into the tungsten crucible in the vacuum induction equipment again, evacuate to below 10Pa, then fill it with argon gas for argon washing, argon washing twice, and then carry out leak detection of the equipment, after the leak detection is qualified , under the protection of argon to carry out...

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Abstract

The invention relates to a preparation method of a terbium-iron alloy. The preparation method comprises the specific steps that prepared raw materials including terbium fluoride powder, metal calcium particles, iron powder and NaCl powder are added into a mixing machine to be evenly mixed; the method comprises the following steps of: adding metal into a tungsten crucible of vacuum induction equipment, filling argon gas for argon washing after the vacuum degree is lower than 10Pa, then carrying out equipment leakage detection, filling protective gas argon gas after the leakage detection is qualified, starting to heat for thermal reduction operation, then casting, cooling furnace equipment, taking out and separating slag to obtain primarily separated metal; and the primarily separated metal is placed in the tungsten crucible of the vacuum induction equipment again, argon is filled for argon washing after the vacuum degree is lower than 10 Pa, then equipment leakage detection is conducted, protective gas argon is filled after leakage detection is qualified, refining and impurity removal are conducted, the materials are kept for 20-30 minutes after being completely melted, metal ingots are cast after impurity removal, and the terbium-iron alloy is obtained. The problems of high production cost, multiple procedures and long period are solved.

Description

technical field [0001] The invention relates to the technical field of rare earth iron alloy preparation research, in particular to a preparation method of terbium iron alloy. Background technique [0002] Rare earth iron alloy is a combination of rare earth elements and iron elements. The content of rare earth elements in rare earth alloys is different due to different uses. Among them, terbium iron alloy is an important kind of rare earth iron alloy. [0003] At present, the preparation method of traditional terbium-iron alloys is generally as follows: firstly, pure metal terbium is prepared by vacuum calcithermal reduction method with rare earth fluoride, and then co-melted with pure iron rods according to a certain proportion, and smelted into terbium-iron alloys with different terbium contents. . The disadvantages of this preparation method are: high production cost, many procedures, long period, expensive equipment, serious environmental pollution and the like. Cont...

Claims

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Application Information

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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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