Nickel-phosphorus-cobalt ternary alloy electroless plating solution for alloy steel workpieces and production method

A ternary alloy and electroless plating solution technology, which is applied in the nickel-phosphorus-cobalt ternary alloy chemical plating solution and production field of alloy steel workpieces, can solve the problems of difficult management and operation, high cost, and large usage, so as to reduce the cost of coating , fast film forming speed and high hardness

Inactive Publication Date: 2012-05-02
DALIAN SANDAAOKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing nickel-phosphorus-cobalt electroless plating solution needs to prepare the working solution and the adjustment solution in use, and needs to purchase three plating solutions such as A, B, and C, which is difficult to manage and operate, and there are also many usages and high costs. The problem
Especially there is no nickel-phosphorus-cobalt electroless plating solution specially used for alloy steel workpieces at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Raw materials and mass percentages used are as follows:

[0018] Nickel chloride 5~10%

[0019] Sodium hypophosphite 5~10%

[0020] Cobalt chloride 5~10%

[0021] Ammonium chloride 5~10%

[0022] Lactic acid 1 ~6%

[0023] Sodium citrate 10 ~15%

[0024] Compound complexing agent 0.3~0.5%

[0025] Rare earth additive 1~3%

[0026] water balance.

[0027] Each raw material can be selected within the quality range, so that the sum of the quality is 100%.

[0028] The composite complexing agent and rare earth additives in the above raw materials are all products of Dalian Sanda Oak Chemical Co., Ltd., and the product models are MT-003 and MT-004 respectively.

[0029] The production method is carried out according to the following steps: add the calculated and weighed water into the reaction kettle, start the agitator, control the speed of 120 rpm, and then add the calculated and weighed nickel chloride, sodium hypophosphite, cobalt chloride, chlorine Add ammonium...

Embodiment 2

[0031] Raw material and production method are all with embodiment 1, just raw material and mass percentage are as follows:

[0032] Nickel Chloride 8%

[0033] Sodium hypophosphite 5~10%

[0034] Cobalt Chloride 8%

[0035] Ammonium Chloride 8%

[0036] Lactic acid 4%

[0037] Sodium Citrate 12%

[0038] Compound complexing agent 0.4%

[0039] Rare earth additives 2%

[0040] water balance.

[0041] Add water according to 20% of the present invention to prepare working fluid, adjust pH value to 8~9pt, temperature 85~95°C, loading capacity 3dm 2 / L, for electroless plating of powder metallurgy workpieces, the plating speed is 6~8μm / H, the obtained coating is fine-grained, high hardness and extremely wear-resistant, and the plating solution process is stable.

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PUM

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Abstract

The invention discloses nickel-phosphorus-cobalt ternary alloy electroless plating solution for alloy steel workpieces. The solution is characterized by comprising the following raw materials by weight percent: 5-10% of nickel chloride, 5-10% of sodium hypophosphite, 5-10% of cobalt chloride, 5-10% of ammonium chloride, 1-6% of lactic acid, 10-15% of sodium citrate, 0.3-0.5% of compound complexing agent, 1-3% of rare earth additive and the balance of water. A production method comprises the following steps: adding calculated and weighed water to a reactor, raising the temperature to 38-42 DEG C, starting a stirrer, controlling the rotating speed of the stirrer to be 120r/min, then slowly adding the calculated and weighed nickel sulfate hexahydrate, sodium hypophosphite, sodium citrate, succinic acid, ammonium sulfate, stabilizing agent and compound complexing agent to the reactor in sequence, stirring the materials while adding until the solution becomes green transparent liquid and carrying out emptying and packaging when the solution is cooled to the room temperature.

Description

technical field [0001] The invention relates to an electroless plating solution and a production method, in particular to a chemical plating solution with stable process, less usage, low cost, fast film forming speed, fine coating, high hardness, strong wear resistance and corrosion resistance, and easy operation and management. An alloy steel workpiece nickel-phosphorus-cobalt ternary alloy electroless plating solution and a production method thereof. Background technique [0002] Electroless plating relies on the chemical reaction in the electroless plating solution to provide the electrons required for the reduction of metal ions. When the metal ions absorb the electrons, they are evenly deposited on the surface of the workpiece to form a coating. Since the dispersion force of the electroless plating solution is close to 100%, there is no obvious edge effect and the thickness of the coating is very uniform, smooth, dense and non-porous, especially suitable for workpieces ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/50C23C18/36
Inventor 潘德顺李树龙李撼哲
Owner DALIAN SANDAAOKE CHEM
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