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Rare-earth-cerium-chromium-cobalt electroplating solution and electroplating method thereof

A rare earth cerium and cobalt electroplating technology, applied in the field of electroplating, can solve the problems of low plating solution coverage and poor corrosion resistance of the coating, and achieve the effects of strong coverage and good corrosion resistance

Inactive Publication Date: 2016-04-13
无锡杨市表面处理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing chromium electroplating process has poor corrosion resistance of the obtained coating and low coating ability of the plating solution

Method used

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  • Rare-earth-cerium-chromium-cobalt electroplating solution and electroplating method thereof
  • Rare-earth-cerium-chromium-cobalt electroplating solution and electroplating method thereof
  • Rare-earth-cerium-chromium-cobalt electroplating solution and electroplating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: The pH value of the rare earth cerium-chromium-cobalt electroplating solution of the present embodiment is 2.5, and comprises the following components:

[0020]

[0021]

[0022] Use this rare earth cerium-chromium-cobalt plating solution electroplating method as follows:

[0023] Put the carbon electrode into the rare earth cerium-chromium-cobalt electroplating solution as the anode, put the workpiece into the rare earth cerium-chromium-cobalt electroplating solution as the cathode, connect the DC power supply, and set the temperature at the temperature of the rare earth cerium-chromium-cobalt electroplating solution at 40°C, the cathode current density is 50mA / cm 2 The electroplating was carried out for 4 minutes at a lower temperature to obtain a rare earth cerium-chromium-cobalt coating.

Embodiment 2

[0024] Embodiment 2: The pH value of the rare earth cerium-chromium-cobalt electroplating solution of the present embodiment is 2.5, and comprises the following components:

[0025]

[0026] Use this rare earth cerium-chromium-cobalt plating solution electroplating method as follows:

[0027] Put the carbon electrode into the rare earth cerium-chromium-cobalt electroplating solution as the anode, put the workpiece into the rare earth cerium-chromium-cobalt electroplating solution as the cathode, connect the DC power supply, and set the temperature at the temperature of the rare earth cerium-chromium-cobalt electroplating solution at 45°C, the cathode current density is 80mA / cm 2 The electroplating was carried out for 5 minutes at a lower temperature to obtain a rare earth cerium-chromium-cobalt coating.

Embodiment 3

[0028] Embodiment 3: the pH value of the rare earth cerium-chromium-cobalt electroplating solution of the present embodiment is 3, comprises the following components:

[0029]

[0030] Use this rare earth cerium-chromium-cobalt plating solution electroplating method as follows:

[0031] Put the carbon electrode into the rare earth cerium-chromium-cobalt electroplating solution as the anode, put the workpiece into the rare earth cerium-chromium-cobalt electroplating solution as the cathode, connect the DC power supply, and set the temperature at the temperature of the rare earth cerium-chromium-cobalt electroplating solution Electroplating was performed at 40°C and the cathode current density was 100mA / cm2 for 4 minutes to obtain a rare earth cerium-chromium-cobalt coating.

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PUM

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Abstract

The invention discloses a rare-earth-cerium-chromium-cobalt electroplating solution and an electroplating method thereof. The rare-earth-cerium-chromium-cobalt electroplating solution comprises 80-160 g / L of chromium sulfate, 20-80 g / L of cobalt sulphate, 0.1-10 g / L of cerium oxide, 4-60 g / L of formic acid, 80-120 g / L of sodium hypophosphite, and 1-10 g / L of a brightener. A certain amount of rare earth cerium is added into the rare-earth-cerium-chromium-cobalt electroplating solution, the electric current efficiency and dispersion performance are obviously improved. The electroplated layer is compact and uniform and has excellent combination and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a rare earth cerium-chromium-cobalt electroplating solution and an electroplating method thereof. Background technique [0002] Rare earths are known as "industrial vitamins". Now it has become an extremely important strategic resource. Rare earth element oxides refer to oxides of 15 cerium-series elements with atomic numbers from 57 to 71 in the periodic table of elements, and oxides of scandium (Sc) and yttrium (Y), which are chemically similar to cerium-series elements, a total of 17 elements. . Rare earth elements have been widely used in petroleum, chemical industry, metallurgy, textile, ceramics, glass, permanent magnet materials and other fields. With the advancement of science and technology and continuous breakthroughs in application technology, the value of rare earth oxides will increase. [0003] In the existing chromium electroplating process, the obtained ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56
Inventor 潘增炎
Owner 无锡杨市表面处理科技有限公司
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