Electroplating solution for nano-ZrO2 composite plating of Ni-P alloy and electroplating method

An electroplating solution and composite plating technology, applied in the field of nickel electroplating process, can solve the problems of weak corrosion resistance, low wear resistance, and low hardness of Ni-P alloy coating, so as to improve the hardness and wear resistance, improve the Corrosion resistance, passivation promotion effect

Inactive Publication Date: 2015-05-20
WUXI XUEJIANG ENVIRONMENT ENG EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing Ni-P alloy coating generally has technical defects of low hardness, low wear resistance, and wea

Method used

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  • Electroplating solution for nano-ZrO2 composite plating of Ni-P alloy and electroplating method
  • Electroplating solution for nano-ZrO2 composite plating of Ni-P alloy and electroplating method
  • Electroplating solution for nano-ZrO2 composite plating of Ni-P alloy and electroplating method

Examples

Experimental program
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preparation example Construction

[0033] (1) Preparation of nano-dispersion. DK417 nanometer ZrO produced by Beijing Deke Daojin Technology Co., Ltd. 2 . Add the fluorocarbon surfactant into the three-necked flask to dissolve and then stir with a mixer at low speed for several minutes. Then, after transferring to a large beaker and installing the GR-I shear disperser of Chengdu Xindu Yongtong Machinery Factory, add the nano-ZrO2 powder into the three-necked flask, and adjust the speed of the shear disperser to 300-500rpm. After the shear dispersion time is 5-10 minutes, the rotation speed is adjusted to 1500-2000 rpm, and the shear dispersion time is 10-15 minutes to obtain the nano slurry. The average particle size of the nano-dispersion was tested by a Mastersizer 2000 laser particle size analyzer from Malvern.

[0034] (2) Weigh the mass of other raw material components with an electronic balance according to the formula. Dissolve the component raw materials with appropriate amount of water, mix them ev...

Embodiment 1

[0040] The formulation of the electroplating solution is as follows:

[0041]

[0042] In the nano-dispersion liquid preparation, the rotating speed of low-speed shear dispersion is 300rpm, and the time of low-speed shear dispersion is 5min; the rotational speed of high-speed shear dispersion is 1500rpm, and the time of high-speed shear dispersion is 10min; the ultrasonic dispersion power is 600W, The time of ultrasonic dispersion is 6min, and the average particle size of carbon nanometer in the prepared dispersion is 100nm; the plating process conditions: the pulse width of single pulse square wave current is 1ms, the duty ratio is 30%, and the average current density is 2A / dm 2 ; The pH is 2, the temperature is 50°C, and the electroplating time is 40min.

Embodiment 2

[0044] The formulation of the electroplating solution is as follows:

[0045]

[0046] In the nano-dispersion liquid preparation, the rotating speed of low-speed shear dispersion is 500rpm, and the time of low-speed shear dispersion is 10min; the rotational speed of high-speed shear dispersion is 2000rpm, and the time of high-speed shear dispersion is 15min; the ultrasonic dispersion power is 1000W, The ultrasonic dispersion time is 3 minutes, and the average particle size of carbon nanometers in the prepared dispersion is 110 nm. Plating process conditions: the pulse width of the single pulse square wave current is 1ms, the duty cycle is 25%, and the average current density is 3A / dm 2 ; The pH is 0.5, the temperature is 55°C, and the electroplating time is 35min.

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Abstract

The invention discloses an electroplating solution for nano-ZrO2 composite plating of Ni-P alloy and an electroplating method. The electroplating solution includes 200-260g/L NiSO4.6H2O, 30-70g/L NiCl2.6H2O, 20-50g/L H3PO3, 30-50g/L H3BO3, 25-45g/L a fluoride, 25-50g/L citrate, 3-7g/L nano-ZrO2, 0.30-0.44g/L a fluorocarbon surfactant, 5-10g/L saccharin salt and 0.5-0.7g/L hydroxyethyl propargyl ether. The electroplating solution provided by the invention contains nano-ZrO2, and due to the rigidity of nano-ZrO2 itself, the hardness and wear resistance of the coating are improved. On the one hand, the nano-ZrO2 can fill the pores of the coating and wind and cover the surfaces of alloy metal grains to prevent infiltration of a corrosive liquid, and on the other hand the nano-ZrO2 and alloy metal micro-crystals compose a miniature primary battery to promote passivation of Ni-P alloy, thereby improving corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of electroplating nickel technology, in particular to a nano ZrO 2 An electroplating solution and an electroplating method for composite Ni-P alloy plating. Background technique [0002] Ni-P alloy coating has excellent magnetic, electrical and mechanical properties, white color, fine crystallization, strong covering ability, good brightness, leveling, uniformity, ductility and corrosion resistance. Ni-P alloy coating is widely used as protective decoration and wear-resistant materials, and is an important functional magnetic material, which is widely used in computer storage devices and memory and recording devices in the electronic industry. Electrodeposition of Ni-P alloy foil instead of pure nickel-coated foil can save precious nickel resources. The performance of Ni-P alloy coating with chromium is good, especially the deep plating ability of sleeve chromium is better than that of bright nickel coatin...

Claims

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Application Information

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IPC IPC(8): C25D3/56
CPCC25D3/562
Inventor 曾雄燕
Owner WUXI XUEJIANG ENVIRONMENT ENG EQUIP
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