Oxidation-resisting flexible NdFeB pasting magnetic stripe and preparation method thereof

An anti-oxidation and flexible technology, used in the manufacture of inductors/transformers/magnets, magnetic objects, magnetic materials, etc., can solve the problems of reduced magnet performance, low bonding strength, easy exposure to air, etc., to improve magnetic performance, strong resistance The effect of oxidative power

Active Publication Date: 2015-05-20
HEYE HEALTH TECH CO LTD
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Problems solved by technology

[0005] However, the current flexible bonded NdFeB magnets, such as flexible bonded NdFeB magnetic strips, mainly have the following technical problems: the bonding strength between the NdFeB magnetic powder and the base material rubber or nylon is low, and

Method used

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  • Oxidation-resisting flexible NdFeB pasting magnetic stripe and preparation method thereof
  • Oxidation-resisting flexible NdFeB pasting magnetic stripe and preparation method thereof
  • Oxidation-resisting flexible NdFeB pasting magnetic stripe and preparation method thereof

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[0029] Essentially, the flexible bonding NdFeB permanent magnet material is a kind of material with poor corrosion resistance, because neodymium is one of the most chemically active metal elements, and its standard electromotive force E(Nd3+ / / Nd)= -2.431V. In the bonded NdFeB permanent magnet powder, most of the neodymium forms the Nd2Fe14B phase, and there is basically no neodymium-rich phase, and the grain structure is nanostructure, so the corrosion resistance is much better than that of the sintered NdFeB magnet, but it is long-term in the atmospheric environment Exposure will still cause significant oxidation corrosion, which will significantly reduce the magnetic properties. There are two factors that cause the decrease of magnetic performance: one is that the neodymium element generates oxides after oxidation, the excess iron is precipitated, and the soft magnetic phase is formed, resulting in the reduction of the permanent magnetic phase; the second is that the soft mag...

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Abstract

The invention discloses an oxidation-resisting flexible NdFeB pasting magnetic stripe and a preparation method thereof. The preparation method of the oxidation-resisting flexible NdFeB pasting magnetic stripe mainly comprises the step 10 that magnetic powder is prepared, the step 20 that the granularity of the magnetic powder is regulated, the step 30 that surface pretreatment is conducted on the magnetic powder, the step 40 that the magnetic powder integrates with a binder, the step 50 that the flexible NdFeB pasting magnetic stripe is formed, the step 60 that protection on the surface of the oxidation-resisting flexible NdFeB pasting magnetic stripe is conducted, and the step 70 that magnetizing is conducted on the oxidation-resisting flexible NdFeB pasting magnetic stripe. The oxidation-resisting flexible NdFeB pasting magnetic stripe mainly comprises the magnetic powder, the binder and a coupling agent and is prepared by the preparation method. The oxidation-resisting flexible NdFeB pasting magnetic stripe has the advantages of being capable of effectively resisting oxidation and improving the magnetic performance of a magnet.

Description

technical field [0001] The invention relates to the field of flexible rare earth permanent magnet materials, in particular to an anti-oxidation flexible rare earth magnetic strip and a preparation method thereof. Background technique [0002] Modern society is a society dominated by science and technology, and the research and application of new materials has become a symbol of social civilization. The development of rare earth permanent magnet materials has provided great convenience for modern life and has a wide range of applications. Neodymium iron boron (NdFeB) permanent magnet material is the material with the highest magnetic performance among rare earth permanent magnet materials, and is widely used for its excellent performance. [0003] Neodymium-iron-boron (NdFeB) permanent magnet materials include sintered NdFeB permanent magnet materials and bonded NdFeB permanent magnet materials. Among them, bonded NdFeB permanent magnet materials refer to the combination of ...

Claims

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Application Information

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IPC IPC(8): H01F41/02H01F1/057H01F1/08B22F1/02B22F3/18
Inventor 李俊胡立江方志财
Owner HEYE HEALTH TECH CO LTD
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