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Manufacturing method of nickel-tungsten plating layer

A coating, nickel-tungsten technology, applied in the field of nickel-tungsten coating preparation, can solve the problems of low solution latitude, high requirements for coating preparation process, complicated pretreatment, etc., and achieves simple process, high stability of plating solution, and pretreatment simple effect

Inactive Publication Date: 2017-05-17
TIANJIN RUISAIKE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nickel-tungsten coatings have not been widely used, mainly because of the high requirements for the coating preparation process, complicated pre-treatment, and low solution tolerance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A kind of nickel-tungsten coating preparation method, plating solution consists of:

[0012] Nickel chloride 0.15mol / L, nickel sulfate 0.1mol / L, sodium sulfate 0.1mol / L, sodium hydrogen phosphate 0.1 mol / L, citric acid 0.5 mol / L, OP-10 0.001ml / L, 1,4 butyne Diol 0.1g / L, sodium tungstate 0.1mol / L;

[0013] The electrodeposition process is: current density 3A·dm -2 , bath temperature 20℃

Embodiment 2

[0015] A kind of nickel-tungsten coating preparation method, plating solution consists of:

[0016] Nickel chloride 0.45 mol / L, nickel sulfate 0.25 mol / L, sodium sulfate 0.2 mol / L, sodium hydrogen phosphate 0.3 mol / L, citric acid 2 mol / L, OP-10 0.005 ml / L, 1,4 butyne Diol 0.2 g / L, sodium tungstate 0.4 mol / L;

[0017] The electrodeposition process is: current density 15A·dm -2 , bath temperature 40 ℃.

Embodiment 3

[0019] A kind of nickel-tungsten coating preparation method, plating solution consists of:

[0020] Nickel chloride 0.3 mol / L, nickel sulfate 0.2 mol / L, sodium sulfate 0.15 mol / L, sodium hydrogen phosphate 0.2 mol / L, citric acid 1 mol / L, OP-10 0.003 ml / L, 1,4 butyne Diol 0.15g / L, sodium tungstate 0.25 mol / L;

[0021] The electrodeposition process is: current density 9A·dm -2 , bath temperature 30 ℃.

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Abstract

The invention provides a manufacturing method of a nickel-tungsten plating layer. A plating solution consists of 0.15-0.45 mol / L nickel chloride, 0.1-0.25 mol / L nickel sulfate, 0.1-0.2 mol / L sodium sulfate, 0.1-0.3 mol / L sodium hydrogen phosphate, 0.5-2 mol / L citric acid, 0.001-0.005 ml / L OP-10, 0.1-0.2 g / L 1,4-dihydroxy-2-butyne, and 0.1-0.4 mol / L sodium tungstate. An electrodeposition technology comprises the following steps of enabling the current density to be 3-15 A.dm<-2>, and enabling the temperature of the plating solution to be 20-40 DEG C. The manufacturing method disclosed by the invention has the advantages of being simple in technology, low in cost, simple in pre-processing, high in stability of the plating solution, long in cycle life and the like, so that large-scale production of the nickel-tungsten plating layer can be realized.

Description

technical field [0001] The invention relates to a preparation method of a nickel-tungsten coating. Background technique [0002] Nickel-tungsten coating has excellent corrosion resistance, catalytic hydrogen evolution performance, high-temperature mechanical properties, and has a good decorative effect. Nickel-tungsten coating can be used in high-temperature corrosion-resistant environments, such as the inner wall of steel crystallizers, whose high-temperature mechanical properties greatly exceed those of nickel-cobalt alloys; this coating can also be used to prepare catalytic hydrogen evolution electrodes, whose catalytic hydrogen evolution performance is much higher than that of stainless steel electrodes; nickel-tungsten coatings It is also an ideal decorative coating, which is as bright as the chrome layer but more environmentally friendly. However, nickel-tungsten coatings have not been widely used, mainly because of high requirements for the coating preparation proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/16
Inventor 宋振兴谢玉娟
Owner TIANJIN RUISAIKE NEW MATERIAL TECH CO LTD
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