Multifunctional composite electrochemical deposition liquid and method of use thereof

A deposition solution and electrochemical technology, applied in the chemical field, can solve problems such as single function, application limitation, and poor overall performance, and achieve the effect of improving the quality of the coating, uniform and fine coating, enhancing toughness and wear resistance

Active Publication Date: 2008-08-27
常熟紫金知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main defects of the existing electrochemical deposition solution are: single function, poor comprehensive performance
Therefore, its industrial application is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the standby tank, dissolve metered nickel sulfate, nickel sulfamate, nickel chloride, cobalt sulfate and ammonium bifluoride with hot deionized water. The multifunctional composite electrochemical deposition solution is calculated in 1 liter of solution, and the ratio of each component is as follows:

[0024] Nickel sulfate 100g / L

[0025] Nickel sulfamate 50g / L

[0026] Nickel chloride 50g / L

[0027] Cobalt sulfate 25g / L

[0028] Lanthanum chloride 0.1g / L

[0029] Ammonium bifluoride 15g / L

[0030] Sodium Fluoride 4g / L

[0031] Lauryl alcohol polyoxyethylene ether 0.1g / L

[0032] Naphthalenesulfonic acid 1g / L

[0033] water balance.

[0034] Wherein the ammonium bifluoride only adds 1 / 2 of metering in this step;

[0035] Heat to 55-60°C, add activated carbon 3g / L, stir for 2 hours, let stand for 2 hours, filter, transfer the solution without carbon particles into the cleaned working tank;

[0036] Under stirring, add the remaining amount of ammonium bifluor...

Embodiment 2

[0041] Nickel sulfate 125g / L

[0042] Nickel sulfamate 50g / L

[0043] Nickel chloride 45g / L

[0044] Cobalt sulfate 20g / L

[0045] Lanthanum chloride 0.4g / L

[0046] Ammonium bifluoride 15g / L

[0047] Sodium Fluoride 4g / L

[0048] Lauryl alcohol polyoxyethylene ether 0.3g / L

[0049] Naphthalenesulfonic acid 1.5g / L

[0050] water balance

[0051] When plating, adjust the pH value to 4.5 with 5% dilute sulfuric acid and heat to 40°C. Cathode current density 2A / dm 2 , the cathode is nickel metal. The plating solution is stable, and the resulting coating is dense and uniform. The microhardness of the coating is HV650, and it has excellent corrosion resistance to non-oxidizing acids at room temperature, organic acids at high temperatures, and cold and hot alkali or alkaline media.

Embodiment 3

[0053] Nickel sulfate 150g / L

[0054] Nickel sulfamate 45g / L

[0055] Nickel chloride 40g / L

[0056] Cobalt sulfate 25g / L

[0057] Lanthanum chloride 0.6g / L

[0058] Ammonium bifluoride 20g / L

[0059] Sodium Fluoride 4g / L

[0060] Lauryl alcohol polyoxyethylene ether 0.5g / L

[0061] Naphthalenesulfonic acid 1.8g / L

[0062] water balance

[0063] When plating, adjust the pH value to 4 with 5% dilute sulfuric acid, and heat to 40°C. Cathode current density 1A / dm 2 , the cathode is nickel metal. The plating solution is stable, and the obtained coating is dense and uniform. The microhardness of the coating is HV725, and it has excellent corrosion resistance to non-oxidizing acids at room temperature, organic acids at high temperatures, and cold and hot alkali or alkaline media.

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Abstract

The invention relates to multifunctional compound electrochemical deposition fluid, the composition of the deposition fluid is that the deposition fluid each liter comprises nickel sulfate 100-380g, nickel amino-sulfonate 30-50g, nickel chloride 30-50g, cobalt sulfate 5-25g, lanthanum chloride 0.1-0.6g, ammonium bifluoride 15-25g, sodium fluoride 2-4g, dodecyl polyoxyethylene ether or dodecyl polyoxypropylene nonylphenolether 0.1-1.0g, naphthalenesulfonic acid or p-toluene sulfonamide 1-3g and other is water. Compared with a background technique, the deposition fluid of the invention has the following advantages: the deposition fluid of the invention improves the internal stress condition between a basal body and a nickel layer and intensifies the adhesive force of a primary plating layer, the passivation of a nickel anode is avoided in a nickel plating process, the quality of a plating layer is greatly increased, the corrosion resistance of a nickel electroplating layer is improved, the plating layer becomes even and compact without defects such as stomatas, pockmarks and the like, the deposition fluid has the luster of semi-bright nickel, simultaneously, the hardness and the anti wear property can be improved, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the chemical category and provides a multifunctional composite electrochemical deposition solution and a using method thereof. Background technique [0002] Electrochemical deposition has a history of more than half a century since its invention. The method of electrochemical deposition of diamond has been applied since the 1980s. Electrochemical deposition of diamond abrasive tools, especially special-shaped parts, is used in machining, drilling, glass processing, It is widely used in rubber processing, medical equipment, arts and crafts decoration and other industries. At present, the preparation method of electroplated diamond abrasive tools still adopts conventional processing methods. The traditional production process is far from meeting the requirements of users in terms of production technology and product quality. The current electrochemical deposition solution is made of nickel-iron alloy or nickel Phosphorus alloy, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/12
Inventor 康彩荣莫祥银景颖杰
Owner 常熟紫金知识产权服务有限公司
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