Nickel plating/organic coating double-layer surface protection method for NdFeB (neodymium-iron-boron) magnet material

An organic coating, neodymium iron boron technology, applied in the device, coating, epoxy resin coating and other directions of coating liquid on the surface, can solve the problem of inability to meet the application of neodymium iron boron, and achieve a complete supporting system, medium resistance The effect of good salt spray and good corrosion resistance
CN102534697AActive Publication Date: 2012-07-04INST OF METAL RESEARCH - CHINESE ACAD OF SCI
5 Cites 21 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Publication Date
2012-07-04
Patent Text Reader

Abstract

The invention relates to a surface protection technology for a NdFeB (neodymium-iron-boron) magnet material, in particular to a nickel plating / organic coating double-layer surface protection method for the NdFeB magnet material. The nickel plating / organic coating double-layer surface protection method comprises the following steps of: firstly removing oil and rust from NdFeB, and polishing by using sand paper; then carrying out nickel plating process on the NdFeB; and coating a layer of organic paint so as to form an organic coating. According to the nickel plating / organic coating double-layer surface protection method, disclosed by the invention, aiming at the problem of poor corrosion resistance of some single-layer surface protections, such as electric plating, chemical plating and organic coating, a surface protection technology of nickel plating / organic coating double-layer protection is adopted, so that the application restriction of the NdFeB is eliminated, and the neutral salt spray corrosion resistance of a coating is improved greatly on the premise of ensuring the adhesion force and magnetic property of the coating and a substrate to be unaffected.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a surface protection technology of an NdFeB magnet material, in particular to a double-layer protection method of nickel plating / organic coating on the surface of an NdFeB magnet material. Background technique

[0002] Since Masato Sagawa discovered NdFeB magnets in 1983, sintered NdFeB magnets have been widely used in computers, motors, wind power generators, electric vehicles, instruments and meters, magnetic Transmission bearings, high-fidelity loudspeakers, nuclear magnetic resonance imaging instruments, aerospace navigation devices and other industries have huge potential application prospects in emerging technology fields such as maglev trains. Relying on the advantages of rare earth resources and production costs, China has vigorously developed the NdFeB magnet industry and has become the world's largest producer and consumer.

[0003] However, due to the strong chemical activity of Nd-Fe-B material, poor corrosion resi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More