Preparation method and use method of Dy monatomic permeate

A technology of permeates and atoms, which is applied in the field of preparation of Dy single-atom permeates, can solve the problems of powder waste, grain size, unevenness, etc., and achieve the effects of reducing hindrance, stable performance, and improving atom utilization

Active Publication Date: 2021-05-04
廊坊京磁精密材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Another object of the present invention is to provide a preparation method of Dy single-atom permeate, which prepares single-atom Dy permeate by chemical method, further reduces the size of heavy rare earth, uniform crystal grains, and performs high-temperature infiltration under vacuum to achieve improved The coercive force of the magnet is not limited by the thickness of the magnet, which overcomes the high requirements of the existing infiltration technology on the thickness of the infiltration magnet, and there will be a lot of powder waste and appearance when manufacturing nano-scale or micron-scale powders. Technical Problems of the Phenomenon of Inhomogeneous Grain Size

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  • Preparation method and use method of Dy monatomic permeate

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Embodiment 1

[0031]The invention provides a preparation method of Dy monoatomic permeate, which is specifically: adding ZIF-8 powder into dysprosium carbonate solution, and placing it in NH at a temperature of 900°C 3 After being kept warm for 1 hour under ambient conditions, a solid powder is obtained, which is the Dy single-atom permeate;

[0032] Wherein, dysprosium carbonate solution comprises industrial ethanol aqueous solution, bonding agent and dysprosium carbonate that weight ratio is 10:1.8:5;

[0033] The adhesive is an aqueous solution of polyvinyl propanol PVA: mix polyvinyl propanol PVA powder and water at a weight ratio of 1:10, and place it in a constant temperature water bath at 60°C, heat and stir until it is uniform and transparent, and then the adhesive is obtained. Adhesive; The volume fraction of industrial ethanol aqueous solution is 95%;

[0034] The preparation method of described dysprosium carbonate solution is: according to above-mentioned weight ratio, take ind...

Embodiment 2

[0038] The invention provides a preparation method of Dy monoatomic permeate, which is specifically: adding ZIF-8 powder into dysprosium carbonate solution, and placing it in NH at a temperature of 900°C 3 After being kept warm for 1 hour under ambient conditions, a solid powder is obtained, which is the Dy single-atom permeate;

[0039] Wherein, dysprosium carbonate solution comprises industrial ethanol aqueous solution, bonding agent and dysprosium carbonate that weight ratio is 10:1.8:5;

[0040] The adhesive is an aqueous solution of polyvinyl propanol PVA: mix polyvinyl propanol PVA powder and water at a weight ratio of 1:10, and place it in a constant temperature water bath at 60°C, heat and stir until it is uniform and transparent, and then the adhesive is obtained. Adhesive; The volume fraction of industrial ethanol aqueous solution is 95%;

[0041] The preparation method of described dysprosium carbonate solution is: according to above-mentioned weight ratio, take in...

Embodiment 3

[0049] The invention provides a preparation method of Dy monoatomic permeate, which is specifically: adding ZIF-8 powder into dysprosium carbonate solution, and placing it in NH at a temperature of 900°C 3 After being kept warm for 1 hour under ambient conditions, a solid powder is obtained, which is the Dy single-atom permeate;

[0050] Wherein, dysprosium carbonate solution comprises industrial ethanol aqueous solution, bonding agent and dysprosium carbonate that weight ratio is 10:1.8:5;

[0051] The adhesive is an aqueous solution of polyvinyl propanol PVA: mix polyvinyl propanol PVA powder and water at a weight ratio of 1:10, and place it in a constant temperature water bath at 60°C, heat and stir until it is uniform and transparent, and then the adhesive is obtained. Adhesive; The volume fraction of industrial ethanol aqueous solution is 95%;

[0052] The preparation method of described dysprosium carbonate solution is: according to above-mentioned weight ratio, take in...

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Abstract

The invention discloses a preparation method and a use method of a Dy monatomic permeate. The preparation method specifically comprises the following steps that ZIF-8 powder is added into a dysprosium carbonate solution, placed in an NH3 environment with the temperature of 900 DEG C, and heat preservation is carried out for 1h to obtain solid powder, namely the Dy monatomic permeate; and the dysprosium carbonate solution comprises an industrial ethanol aqueous solution, an adhesive and dysprosium carbonate in a weight ratio of 10: 1.8: 5. According to the preparation method and the use method, the monatomic Dy permeate is prepared through a chemical method, so that the size of heavy rare earth is further reduced, crystal grains are uniform, high-temperature permeation is carried out under vacuum, the coercive force of the magnet is improved, limitation of the thickness of the magnet is avoided, and the technical problems that existing permeation technology has high requirements for the thickness of the permeated magnet, and when nanoscale or micron-sized powder is manufactured, a great amount of powder is wasted, and the grain size is not uniform are solved.

Description

technical field [0001] The invention relates to the technical field of infiltration of magnetic materials. More specifically, the present invention relates to a method for preparing a Dy single-atom permeate and a method for using it. Background technique [0002] The intrinsic coercive force and remanent magnetism of rare earth permanent magnets are two important parameters to measure the performance of permanent magnets. At present, the method of increasing the coercive force is mostly to add a large amount of heavy rare earth, but with the increase of the content of heavy rare earth, the A case of reduced remanence occurs. The methods of adding heavy rare earths that are often used at present can be divided into two categories, one is to add NdFeB to the formula during the production process, and the other is to infiltrate heavy rare earths at 900°C-1000°C after sintering. In the case of a high temperature of ℃, the secondary tempering is carried out for infiltration. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B59/00C23C10/20H01F41/02C12N1/14C12R1/785C12R1/685C12R1/845C12R1/80
CPCC22B59/00C23C10/20H01F41/0293C12N1/14
Inventor 任金华
Owner 廊坊京磁精密材料有限公司
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