Method for forming aluminum coating on surface of neodymium iron boron magnet

A technology of neodymium iron boron and magnets, which is applied in the direction of surface coating liquid devices, coatings, special surfaces, etc., can solve the problem of no magnetic shielding effect, etc., and achieve the effect of low cost, simple process and short time
CN102389871BActive Publication Date: 2013-12-25ADVANCED TECHNOLOGY & MATERIALS CO LTD
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ADVANCED TECHNOLOGY & MATERIALS CO LTD
Publication Date
2013-12-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention relates to a method for forming an aluminum coating on the surface of a neodymium iron boron magnet and belongs to the technical field of magnet surface treatment. An adopted mechanical aluminum-plating process comprises the following steps of: colliding an impacting medium having aluminum coating powder on the surface thereof with the surface of a plated piece under an action of external mechanical vibration, thereby transferring the aluminum coating powder from the surface of the impacting medium to the surface of the plated piece; heating and solidifying the plated piece; and finally, forming a corrosion-resistance coating on the surface of the plated piece. The method provided by the invention has the advantages that the process is simpler and has a shorter time, the consumption of resources such as water, electricity and the like is low, and the raw materials used in the method, such as aluminum, epoxy resins and the like are low in costs, so that the total cost is greatly lowered.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of magnet surface treatment, and in particular provides a method for forming an aluminum coating on the surface of a neodymium-iron-boron (NdFeB) magnet. The final formed coating has good corrosion resistance and has no magnetic shielding effect . Background technique

[0002] Neodymium iron boron (NdFeB) permanent magnet material is a functional material with a wide range of applications, and has played an important role in the fields of motors, communications, IT, and wind power generation. NdFeB magnets have a multi-phase structure, and the problem of intergranular corrosion must be overcome by its surface protection. Since surface protection is the last link in magnet production, the quality of electroplating will directly affect the final quality of products. Electroplating technology is NdFeB The most critical technology in the production technology of boron products.

[0003] At present, the surface...

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