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Electro chemical machining nano Ni-Fe alloy coat and its electroplate liquid, preparation method and use

A technology of alloy coating and brush plating, which is applied in the field of preparation and brush plating of nano-Ni-Fe alloy coating and its plating solution, can solve the problems of short service life of the plating solution, easy contamination of the plating solution, and differences in the performance of the plating layer. Achieve a bright finish, increase service life, and restore size and performance

Inactive Publication Date: 2010-01-27
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the difference in electroplating solution and electroplating parameters, the properties of the electroplated coatings are very different.
Moreover, the common graphite anode used in the past electroplating is easy to pollute the plating solution, the deposition rate is low, and the service life of the plating solution is short, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1). Plating solution composition: nickel sulfamate 420g / L, nickel chloride 47.5 / L, ferrous chloride 5g / L, boric acid 40g / L, trisodium citrate 25g / L, ascorbic acid 1.5g / L, butyl Diacid 0.2g / L, sodium dodecyl sulfate 0.02g / L, saccharin 0.2g / L.

[0028] 2). Brush plating conditions: voltage 6V; cathode and anode relative movement speed 11m / min; bath temperature 60°C, time 30min.

[0029] 3). Results: The Fe content of the coating is 5.84%, the grain size is 30nm, and the hardness is HV512.2 (significantly higher than HV451 of pure nano-Ni). The thickness is 40μm, and the surface of the coating is bright without cracks.

Embodiment 2

[0031] 1) bath composition: ferrous chloride is increased to 15g / L, and other composition concentration is identical with example 1.

[0032] 2) Brush plating conditions: the same as in Example 1.

[0033] 3) Results: The Fe content of the coating is 16.56%, the grain size is 8.7nm, and the hardness is HV584. The thickness is 35μm, and the surface of the coating is bright without cracks. After annealing at 200°C for 1 hour, the hardness increased to HV710. After annealing at 400°C for 1 hour, the hardness was HV645, which was higher than that of the as-deposited state. The invented nano Ni-Fe alloy coating has high thermal stability.

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PUM

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Abstract

The invention provides an electro brush plating Ni-Fe alloy plating layer, and a bath solution, a preparation method and functions of the plating layer: The grain size of the plating layer is 10 to 30nm, with Fe 5 to 20percent (weight percent), thickness 10 to 100Mu m and hardness HV450 to HV650; the components of the bath solution include nickel sulfamic acid, nickel chlorite, ferrous chloride, succinic acid, boric acid, acid citrate, cevitamic acid, saccharin and sodium dodecylsulphonate; the invention is prepared with the electro brush plating metho, with the soluble metal Ni as the anode, and is applicable in repairing of abraded parts and surface strengthening of parts of new products. The invention improves the hardness of common Ni-plating layer by alloying of Fe, so as to improve the wear resistanceand saves partial Ni; the soluble anode Ni electro brushing plating preparation method solves deficiencies of common graphite anodes, such as bringing pollution to the bath solution, low deposition speed, short service life of the bath solution, etc; the plating layer has advantages of low stress and no crackle, so that the anti-corrosion resistance performance is quite high.

Description

technical field [0001] The invention belongs to the field of electroplating, and more specifically relates to an electric brush plating nano-Ni-Fe alloy coating, a plating solution, a preparation method and an application thereof. Background technique [0002] Compared with ordinary materials with the same composition, nanomaterials have high strength and hardness. People have conducted a lot of research on the synthesis and preparation of nanomaterials and proposed various methods. Among them, the electrodeposition method has the advantages of simple process, less investment in equipment, and high density of prepared nanomaterials. The basic principles of brush plating are the same as electrodeposition, but without the need for a plating tank. During brush plating, the plating pen (connected to the anode of the power supply) immersed in the plating solution is moved on the surface of the workpiece (connected to the cathode of the power supply) at a certain relative speed, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D5/06
Inventor 戴品强项忠楠林志福陈晓文许伟长
Owner FUZHOU UNIV
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