Method for plating zinc and nickel on neodymium-iron-boron material

Abstract

The invention relates to a method for plating zinc and nickel on a neodymium-iron-boron material, and belongs to the field of alloy plating processes. The method comprises the following steps of: (1) firstly carrying out roll finish chamfer treatment on the neodymium-iron-boron material by adopting vibrating type roll finish; (2) placing the neodymium-iron-boron material into a deoiling solution and carrying out ultrasonic deoiling; (3) then carrying out derusting treatment by adopting a nitric acid solution with the volume fraction of 10%; (4) carrying out hole sealing treatment by using a low-temperature particule plugging agent; (5) then carrying out activating treatment under the condition of room temperature by using a sulfosalicylic acid solution; (6) plating the neodymium-iron-boron material subjected to the treatment; (7) carrying out polishing treatment on the plated neodymium-iron-boron material, and then carrying out zinc-nickel alloy plating layer passivating treatment; (8) finally carrying out subsequent impregnation treatment by adopting passivated impregnating resin. The method for plating zinc and nickel on the neodymium-iron-boron material, which is disclosed by the invention, greatly enhances the corrosion-resistant capacity of a neodymium-iron-boron surface after the neodymium-iron-boron surface is treated and reduces the magnetic loss through the improvement of a process and has the advantages of simple process and easiness for popularization and use.

Description

technical field [0001] The invention belongs to the field of electroplating alloy technology, and in particular relates to a method for electroplating zinc and nickel of neodymium-iron-boron materials. Background technique [0002] As a new production material, NdFeB has been widely used in electronics, home appliances and automobile industries due to its excellent magnetic properties and high cost performance, and has achieved rapid development. Due to its special loose and porous structure, NdFeB materials lead to poor corrosion resistance, and the surface coating will cause a decrease in their magnetic properties. At present, the surface treatment of NdFeB materials mainly adopts electroplating to improve their corrosion resistance. It is usually electro-galvanized, double-layer nickel, triple-layer nickel, electroless plating, and some other alloy plating and composite plating, but the above-mentioned plating methods cannot well meet the needs of the actual industry. ...

AI Technical Summary

Problems solved by technology

Due to its special loose and porous structure, NdFeB materials lead to poor corrosion resistance, and the surface coating will cause a decrease in their magnetic properties. At present, the surface treatment of NdFeB materials mainly adopts electroplating to improve their corrosion resistance. Usually electro-galvanized, double-layer nickel, triple-layer nickel, electroless plating, and some other alloy plating and composite plating, but the above plating methods cannot well meet the needs of the actual industry