Metal Electroplating Anodes with Partial Insulation
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Solution Overview
Problem
Existing electroplating methods require ancillary equipment and anolyte management to suppress the oxidative decomposition of organic compound additives, leading to performance issues and increased costs.
Innovation Solution
Using a conductive base material as the anode with a part of its surface covered by an insulating material and the remaining part exposed, allowing a dispersed current flow, which can be implemented using materials like porous metals or perforated steel plates with insulating coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an anode cell system with diaphragm is used to suppress decomposition of organic compound additives, then the decomposition of organic compound additives is suppressed, but a lot of ancillary equipment such as anode cell bodies, pipes, and pumps is required
Solution Approach 1:
The invention extracts and removes the harmful function (organic compound additive decomposition) by selectively eliminating the anode surface area that causes decomposition. By coating only specific portions of the anode with insulating material, the harmful oxidative decomposition is suppressed while maintaining necessary electroplating functions, thereby avoiding complex ancillary equipment systems.
Solution Approach 2:
The invention applies local quality by creating non-uniform insulating coatings on the anode surface. Specific regions (portions) of the anode are coated with insulating material while other regions remain uncoated, allowing different areas to perform different functions: coated areas suppress decomposition while uncoated areas enable current flow for electroplating.
2Reliability
If the entire surface of the conductive base material of the anode is coated to suppress decomposition, then the decomposition of organic compound additives is suppressed, but the cost for manufacturing the anode increases
Solution Approach 1:
The invention applies partial action by coating only the necessary portions of the anode surface with insulating material rather than the entire surface. This selective partial coating achieves the decomposition suppression function while minimizing material usage and manufacturing costs associated with full-surface coating.
3Reliability
If the entire surface of the conductive base material of the anode is coated, then the decomposition of organic compound additives is suppressed, but the performance of electroplating deteriorates
Solution Approach 1:
The invention applies local quality by creating functionally differentiated zones on the anode surface. Insulating-coated regions suppress decomposition while uncoated regions maintain electrical conductivity for electroplating current flow, thereby simultaneously achieving decomposition suppression and preserving electroplating performance.
Solution Approach 2:
The invention segments the anode surface into functionally distinct regions: insulating-coated portions that suppress organic compound decomposition and uncoated portions that enable current flow. This spatial segmentation allows both decomposition suppression and electroplating performance to coexist.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach suppresses the decomposition of organic compound additives, allowing for higher anode current density without increasing bath voltage, thus maintaining stable current distribution and improving electroplating quality.
Implementation Method 1
a conductive base material is used as the anode, part of the surface of which is covered with an insulating material but the remaining part is exposed, and a current flowing portion is dispersedly present in the anode
Implementation Method 2
the organic compound additive is oxidatively decomposed on the surface of the anode by a current flow
Implementation Method 3
a part of a surface of the conductive base material is covered with an insulating material
Implementation Method 4
electroplating an article with metal, comprising the step of: allowing a current to flow in a plating bath containing ions of the metal
Data Source
AI summary
An object of the present invention is to provide a method and system of electroplating using an anode that can be prepared relatively easily without the need for ancillary equipment or anolyte management, and without the need for expensive metals or special metals.The present invention relates to a method of electroplating an article with metal, the method comprising the steps of:allowing a current to flow in a plating bath containing ions of the metal and an organic compound additive, whereinthe plating bath comprises the article as a cathode and a conductive base material as an anode,a part of a surface of the conductive base material is covered with an insulating material, and a remaining part is exposed, anda current flowing portion is dispersedly present in the anode.