Neodymium iron boron magnet and neodymium iron boron magnet surface plating method

Abstract

The invention provides a neodymium iron boron magnet with the surface plated with an anti-corrosion layer. The neodymium iron boron magnet comprises a neodymium iron boron magnet body, a multi-arc ionclad layer compounded on the surface of the neodymium iron boron magnet body, and a magnetron sputtering clad layer compounded on the surface of the multi-arc ion clad layer. The invention further provides a method for neodymium iron boron magnet surface plating. Multi-arc ion plating is only adopted in the magnet surface firstly, bottoming flattening is conducted on the magnet surface, the manner of secondary plating through magnetron sputtering is adopted, the multi-arc plating efficiency is high, good film combining and magnetron sputtering film density are effectively combined, the density of the clad layer is improved, the anti-corrosion performance of the film is improved, and the neodymium iron boron magnet with the surface plated with the anti-corrosion layer is obtained. The provided method for neodymium iron boron magnet surface plating, the technology is simple, and the method is suitable for large-scale industry production.

Description

technical field

[0001] The invention belongs to the technical field of magnet preparation, and relates to an NdFeB magnet and a method for coating the surface of an NdFeB magnet, in particular to a NdFeB magnet coated with an anti-corrosion layer on the surface and a method for coating the surface of an Nd-Fe-B magnet with an anti-corrosion layer . Background technique

[0002] Permanent magnets are hard magnets, magnets that can maintain their magnetism for a long time, and are not easy to lose their magnetization or be magnetized. Therefore, whether in industrial production or in daily life, hard magnets are one of the most commonly used strong materials. Hard magnets can be divided into natural magnets and artificial magnets. Artificial magnets mean that by synthesizing alloys of different materials, the same effect as natural magnets (magnets) can be achieved, and the magnetic force can also be improved. So far, it has developed to the third generation of NdFeB permane...

Images