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Neodymium iron boron magnetic material suitable for motor

A magnetic material, NdFeB technology, applied in the direction of magnetic materials, magnetic circuits characterized by magnetic materials, magnetic objects, etc., can solve the problems of poor mechanical properties of NdFeB, poor product performance, high replacement cost, etc. , to achieve the effect of saving grinding time, high brittleness and good cleaning.

Inactive Publication Date: 2014-03-12
NINGBO STAR MATERIALS HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in the sintering of NdFeB magnets at this stage, especially in the application of motors. Due to the poor mechanical properties of NdFeB magnets in traditional processes, they usually cannot adapt to the harsh working environment of some motors, resulting in product performance Poor, at the same time, the loss of the magnets used in the motor is relatively serious, and the replacement cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A neodymium-iron-boron magnetic material suitable for motors, which is formed by mixing a main phase alloy and an auxiliary phase alloy; the main phase alloy is configured by weight percentage of the following raw materials: iron 64.5%, boron 1.2%, neodymium 34.1%, antimony 0.1%, gallium 0.1%; auxiliary phase alloy is prepared by the following raw materials by weight percentage: iron 53.8%, boron 1.2%, neodymium 19.5%, titanium 14.3%, lanthanum 10.2%, cerium 1.0%.

[0066] In the above scheme, through the antimony in the main phase alloy and the titanium in the auxiliary phase alloy, the high and low temperature mechanical properties of the NdFeB magnet are improved, and the bending strength is enhanced, while reducing the heat loss caused by heat during processing. The damage to the magnet structure caused by earthquakes reduces the damage of NdFeB magnets during processing, thereby improving the yield; and gallium can also significantly increase the coercive force of t...

Embodiment 2

[0125] A neodymium-iron-boron magnetic material suitable for motors, which is formed by mixing a main phase alloy and an auxiliary phase alloy; the main phase alloy is configured by weight percentage of the following raw materials: iron 68.2%, boron 1.2%, neodymium 30.2%, antimony 0.2%, gallium 0.2%; auxiliary phase alloy is prepared from the following raw materials by weight percentage: iron 54.2%, boron 0.8%, neodymium 20.2%, titanium 13.4%, lanthanum 10.6%, cerium 0.8%.

[0126] In the above scheme, through the antimony in the main phase alloy and the titanium in the auxiliary phase alloy, the high and low temperature mechanical properties of the NdFeB magnet are improved, and the bending strength is enhanced, while reducing the heat loss caused by heat during processing. The damage to the magnet structure caused by earthquakes reduces the damage of NdFeB magnets during processing, thereby improving the yield; and gallium can also significantly increase the coercive force of...

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Abstract

The invention relates to a neodymium iron boron magnetic material suitable for a motor. The neodymium iron boron magnetic material is prepared by main phase alloy and auxiliary phase alloy in a mixed mode, the main phase alloy is prepared by, by weight, 64.5-68.5% of iron, 1.0-1.2% of boron, 30.2-34.3% of neodymium, 0.05-0.4% of stibium and 0.1-0.4% of gallium, and the auxiliary phase alloy is prepared by, by weight, 50.8-54.2% of iron, 0.8-1.2% of boron, 18.9-21.1% of neodymium, 12.8-16.3% of titanium, 8.9-11.1% of lanthanum and 0.8-1.2% of cerium. The neodymium iron boron magnetic material prepared according to the technical scheme has the advantages of having the mechanical property suitable for the motor and solving the problem that magnetic material of the motor are prone to being lost.

Description

technical field [0001] The invention relates to a magnetic material and a production process thereof, in particular to a neodymium-iron-boron magnetic material suitable for motors and a production process thereof. Background technique [0002] NdFeB magnetic materials, as the latest result of the development of rare earth permanent magnet materials, are widely used due to their excellent magnetic properties. However, there are still many deficiencies in the sintering of NdFeB magnets at this stage, especially in the application of motors. Due to the poor mechanical properties of NdFeB magnets in traditional processes, they usually cannot adapt to the harsh working environment of some motors, resulting in product performance Poor, and at the same time, the loss of the magnets used in the motor is relatively serious, and the replacement cost is relatively high. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a neo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/057H02K1/02C22C38/60C22C38/14B22F9/04B22F3/16
Inventor 苏广春关井和陈益明
Owner NINGBO STAR MATERIALS HI TECH
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