Electrochemical Coating via Particle Jets for Homogeneous Distribution

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Solution Overview

Problem

Existing electrochemical coating methods require continuous stirring of the electroplating bath to achieve uniform distribution of microscale or nanoscale particles, which is inefficient and limits flexibility in coating large or complex surfaces.

Innovation Solution

A method using jets composed of a medium containing microscale or nanoscale particles to directly introduce these particles onto the workpiece surface, allowing for flexible control of particle density and type through varying jet pressure and composition, eliminating the need for continuous stirring and enabling the production of graded or multilayer coatings without interrupting the process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If continuous stirring of the electroplating bath is used to achieve uniform distribution of nanoparticles, then homogeneous coating is improved, but process time and energy consumption increase

Engineering Contradiction:
Improvehomogeneous coatingVSAvoidprocess time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The invention extracts the nanoparticles from the bulk electroplating bath and delivers them directly to the workpiece surface via jets. This eliminates the need for continuous stirring of the entire bath while ensuring homogeneous particle distribution in the coating, as particles are introduced precisely where needed.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention uses hydraulic jets to transport and deposit nanoparticles onto the workpiece surface. The jet medium carries particles directly to the coating location, replacing the need for mechanical stirring and enabling controlled, homogeneous particle distribution without continuous bath agitation.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Manufacturing precision

If continuous stirring of the electroplating bath is used to distribute nanoparticles uniformly, then coating uniformity is improved, but energy consumption increases

Engineering Contradiction:
Improvecoating uniformityVSAvoidenergy consumption
Core Design Contradiction:
Manufacturing precisionVSUse of energy by stationary object

Solution Approach 1:

The invention extracts nanoparticles from the bulk bath and delivers them via jets to the workpiece surface. This localized delivery method eliminates the need for energy-intensive continuous stirring of the entire bath while maintaining uniform particle distribution in the coating.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention uses hydraulic jet systems to transport nanoparticles to the coating location. This method consumes significantly less energy than continuous mechanical stirring, as energy is applied only locally at the jet outlets rather than throughout the entire bath volume.

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Adaptability or versatility

If jets are used to introduce particles directly onto the workpiece surface, then process flexibility is improved, but device complexity increases

Engineering Contradiction:
Improveprocess flexibilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The jet system serves multiple functions: it delivers the electrolyte, transports nanoparticles, and deposits particles onto the workpiece surface. This multi-functionality increases process flexibility (can coat various geometries without bath changes) while the modular jet design keeps device complexity manageable.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention divides the coating process into multiple jet outlets that can be independently controlled. This segmentation allows flexible adaptation to different workpiece geometries and coating requirements, while each individual jet remains a simple, manageable component.

Inventive Principle:
Principle #1Segmentation

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 enhances the flexibility and efficiency of electrochemical coating by allowing for homogeneous coverage of large or complex surfaces with customizable particle distribution and type, reducing process duration and eliminating the need for frequent bath changes.

Implementation Method 1

a plurality of jets composed of a jet medium are directed at the workpiece surface, with the jet medium comprising the microscale or nanoscale particles to be introduced

Methodology Applied
Scientific EffectFluid flow:

Implementation Method 2

method for electrochemical coating of a workpiece surface

Methodology Applied
Scientific EffectElectrochemical coating: Electrodeposition

Data Source

PatentUS8747638B2Electrode arrangement and method for electrochemical coating of a workpiece surface
Publication Date: 2014.06.10 SIEMENS AG
  • US8747638B2 patent drawing
  • US8747638B2 patent drawing
  • US8747638B2 patent drawing

AI summary

A method for the electrochemical coating of a workpiece surface (2), micro- or nanoscale particles being introduced into the coating is provided. During coating, at least one jet composed of a jet medium comprising the micro- or nanoscale particles to be introduced is directed onto the workpiece surface (2).