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High-corrosion-resistance palladium-nickel alloy coating, electroplating method thereof and electroplating liquid for palladium-nickel coating

An alloy coating, high corrosion resistance technology, applied in the direction of electrolysis process, electrolysis components, cells, etc., can solve problems such as failure to meet application requirements, corrosion of nickel bottom layer and copper alloy substrate, affecting charging function, etc. The effect of strong corrosion resistance and excellent salt water anodic electrolytic corrosion resistance

Active Publication Date: 2021-11-26
万明电镀智能科技(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the charging application of Type C and Micro-USB charging port connectors, if liquid corrosive media such as moisture, sweat or salt water enter, the signal pin terminal of the palladium-nickel alloy plating as the anode will also undergo very obvious anode electrolysis Corrosion until the nickel base layer and copper alloy substrate are severely corroded to affect the charging function
Compared with the gold layer of the same thickness, although the anodic electrolytic corrosion resistance of the palladium-nickel coating is better, it is far from meeting the application requirements and needs further improvement.

Method used

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  • High-corrosion-resistance palladium-nickel alloy coating, electroplating method thereof and electroplating liquid for palladium-nickel coating
  • High-corrosion-resistance palladium-nickel alloy coating, electroplating method thereof and electroplating liquid for palladium-nickel coating
  • High-corrosion-resistance palladium-nickel alloy coating, electroplating method thereof and electroplating liquid for palladium-nickel coating

Examples

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Embodiment 1

[0061] like figure 1 Shown, a kind of highly corrosion-resistant palladium-nickel alloy coating comprises the non-porous nickel bottom layer 2 that is arranged on the base material 1 surface, and the upper surface of described non-porous nickel bottom layer 2 is provided with high corrosion-resistant palladium-nickel coating 3, so The upper surface of the palladium-nickel coating 3 is provided with a hard gold layer 4, and the palladium content of the palladium-nickel coating 3 is 90%-98wt%. Further, the non-porous nickel bottom layer 2 is preferably a non-porous and sulfur-free nickel bottom layer.

[0062] In this embodiment, the thickness of the non-porous nickel bottom layer 2 is 3.8 μm, the thickness of the highly corrosion-resistant palladium-nickel coating 3 is 1.5 μm, and the thickness of the hard gold layer 4 is 0.08 μm. The content of palladium in the coating is 91.5wt% as tested by an XRF film thickness meter.

[0063] A kind of high corrosion resistance palladium...

Embodiment 2

[0074] A kind of highly corrosion-resistant palladium-nickel alloy coating, comprises the non-porous nickel bottom layer 2 that is arranged on the base material 1 surface, and the upper surface of described non-porous nickel bottom layer 2 is provided with high corrosion-resistant palladium-nickel coating 3, and described palladium-nickel The upper surface of the plating layer 3 is provided with a hard gold layer 4, and the palladium content of the palladium-nickel plating layer 3 is 90%-98wt%. Further, the non-porous nickel bottom layer 2 is preferably a non-porous and sulfur-free nickel bottom layer.

[0075] In this embodiment, the thickness of the non-porous nickel bottom layer 2 is 3.8 μm, the thickness of the highly corrosion-resistant palladium-nickel coating 3 is 2.0 μm, and the thickness of the hard gold layer 4 is 0.08 μm. The content of palladium in the coating is 95.5wt% as tested by an XRF film thickness meter.

[0076] A kind of high corrosion resistance palladi...

Embodiment 3

[0087] A kind of highly corrosion-resistant palladium-nickel alloy coating, comprises the non-porous nickel bottom layer 2 that is arranged on the base material 1 surface, and the upper surface of described non-porous nickel bottom layer 2 is provided with high corrosion-resistant palladium-nickel coating 3, and described palladium-nickel The upper surface of the plating layer 3 is provided with a hard gold layer 4, and the palladium content of the palladium-nickel plating layer 3 is 90%-98wt%. Further, the non-porous nickel bottom layer 2 is preferably a non-porous and sulfur-free nickel bottom layer.

[0088] In this embodiment, the thickness of the non-porous nickel bottom layer 2 is 3.8 μm, the thickness of the highly corrosion-resistant palladium-nickel coating 3 is 2.5 μm, and the thickness of the hard gold layer 4 is 0.08 μm. The content of palladium in the coating is 96.5wt% as tested by an XRF film thickness meter.

[0089] A kind of high corrosion resistance palladi...

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Abstract

The invention relates to the technical field of electroplating, and particularly discloses a high-corrosion-resistance palladium-nickel alloy coating. The high-corrosion-resistance palladium-nickel alloy coating comprises a non-porous nickel bottom layer arranged on the surface of a base material, a palladium-nickel coating is arranged on the upper surface of the non-porous nickel bottom layer, a hard gold layer is arranged on the upper surface of the palladium-nickel coating, the palladium content of the palladium-nickel coating is 90-98 wt%, and a lubricating protective coating is further arranged on the upper surface of the hard gold layer. According to the coating, compared with a traditional 70-90 wt% palladium-nickel coating with the same thickness, the anode electrolytic corrosion resistance of the palladium-nickel coating is improved by 1.5 times or above. The invention further provides an electroplating solution for obtaining the high-corrosion-resistance palladium-nickel alloy coating and an electroplating method for obtaining the high-corrosion-resistance palladium-nickel alloy coating. The method can provide the high-corrosion-resistance palladium-nickel alloy coating which is good in combination with a connector terminal base material, high in corrosion resistance and high in wear resistance.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a highly corrosion-resistant palladium-nickel alloy coating, an electroplating method and a palladium-nickel coating electroplating solution. Background technique [0002] Palladium-nickel alloy coatings for engineering have been widely used in the electronics industry for nearly 40 years. They are mainly used as gold-substituting coatings to reduce the cost of electroplating and provide excellent electrical properties and wear resistance to the contact area of ​​electronic devices. [0003] At present, the electroplating palladium-nickel alloy coating in the industry mostly adopts the standard of the American Society for Testing and Materials-ASTM B 867-95 "Standard Specification for Electrodeposited Coatings of Palladium Nickel for Engineering Use", that is, "the standard for electroplating palladium-nickel coating for engineering", and the palladium ( The specified rang...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25D5/34C25D21/00C25D21/12
CPCC25D3/56C25D5/34C25D21/00C25D21/12
Inventor 祁富安全成军肖家庆
Owner 万明电镀智能科技(东莞)有限公司