Neodymium iron boron permanent magnet material and preparation method thereof

A permanent magnet material, neodymium iron boron technology, applied in the direction of magnetic materials, inductors/transformers/magnet manufacturing, magnetic objects, etc., can solve problems such as demagnetization, and achieve the goal of improving coercive force, temperature stability, and squareness Effect
CN110504077AInactive Publication Date: 2019-11-26宁波可可磁业股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
宁波可可磁业股份有限公司
Publication Date
2019-11-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a neodymium iron boron permanent magnet material and a preparation method thereof, and belongs to the technical field of permanent magnet materials. The neodymium iron boron permanent magnet material is technically characterized by comprising the following components in percentage by weight: 30-45% of neodymium, 2-2.5% of niobium, 2.5-4.2% of cobalt, 0.15-0.2% of zinc, 0.2-0.5% of gallium, 2.5-4.8% of boron, 0.1-0.5% of tungsten, 2.5-4% of thulium oxide and the balance of iron. The preparation method of the neodymium iron boron permanent magnet material comprises the following steps: weighing and dosing, smelting, pulverizing, magnetic field magnetizing, briquetting, high-temperature sintering, high-temperature tempering, low-temperature tempering, inspection, packaging and warehousing. The coercive force of the neodymium iron boron permanent magnet material is effectively improved, so that the neodymium iron boron permanent magnet material has excellent performances of improving the square degree and improving the temperature stability.
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Description

technical field

[0001] The invention belongs to the technical field of permanent magnet materials, and more specifically relates to an NdFeB permanent magnet material and a preparation method thereof. Background technique

[0002] High-grade sintered NdFeB usually refers to materials with high remanence. The remanence of the material directly determines the performance of the final product after the material is processed into a finished product. With the continuous expansion of the application field of the material, the requirements for the remanence of the material Higher and higher.

[0003] Due to its excellent performance (high remanence, high coercive force, high magnetic energy product), NdFeB permanent magnet materials have become an indispensable and important material basis in the field of modern science and technology, and the demand for NdFeB has been greatly increased. . With the development of new energy vehicles and high-end equipment, the performance require...

Claims

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