Atmospheric Plasma Friction Coating for Complex Components
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Solution Overview
Problem
Existing methods for producing friction-increasing coatings, such as those using electroplating baths, face issues like particle detachment, complexity in handling large or complex components, and inefficiency, leading to premature wear and functional failures.
Innovation Solution
A non-thermal atmospheric pressure plasma coating method where hard particles, coated with an adhesion promoter, are applied directly to the component surface, ensuring firm anchoring and high coefficients of adhesion without forming a closed layer, allowing for efficient coating on large or complex shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-layer matrix system is used to anchor particles, then particle detachment is reduced, but interface defects occur and layers can detach
Solution Approach 1:
The patent extracts the essential function of particle anchoring from the complex multi-layer matrix system and achieves it through a single plasma treatment step. This eliminates the interface defects and layer detachment problems inherent in multi-layer systems while maintaining reliable particle anchoring.
Solution Approach 2:
The plasma treatment acts as an intermediary that modifies the substrate surface properties to enable direct, reliable particle anchoring. This intermediary process replaces the need for complex multi-layer matrix systems and their associated interface problems.
2Area of stationary object
If electroplating baths are made large to accommodate bulky components, then coating coverage is improved, but the process becomes complex and uneconomical
Solution Approach 1:
The patent replaces the mechanical electroplating bath system with a plasma coating system. This substitution eliminates the need for large, complex electroplating baths while achieving uniform coating coverage on bulky components through plasma's ability to conform to complex geometries.
3Ease of manufacture
If masking is applied to protect surface regions, then selective coating is achieved, but the process becomes complex and impossible for complicated shapes
Solution Approach 1:
The patent replaces the mechanical masking process with plasma-based selective coating methods. Plasma can be precisely controlled and directed to coat only desired surfaces, eliminating masking complexity entirely while handling complicated shapes that would be impossible to mask.
4Reliability
If a separate connecting element with particles is used, then friction-increasing coating is achieved, but additional assembly effort is required
Solution Approach 1:
The patent merges the friction-increasing particles directly onto the component surfaces through plasma coating, eliminating the need for separate connecting elements. This integration reduces assembly steps and effort while maintaining the friction-increasing function.
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
The method achieves high coefficients of adhesion with low detachment rates, enabling reliable force transmission and extended component lifespan by using diamond or silicon carbide particles with optimal adhesion promoter coverage and subsequent plasma treatment.
Implementation Method 1
a) Hard particles 1 which are completely or partially coated with an adhesion promoter 2 are activated in an atmospheric pressure plasma and applied to a component surface 5
Data Source
AI summary
The present invention provides an advantageous method for producing a coating which increases the friction coefficient (3) on a surface (5) of a component (6), wherein the method comprises the following steps: a) activating hard particles (1) that are coated in part or entirely by an adhesive (2) in a non-thermal plasma (low-temperature plasma) under atmospheric pressure; and b) producing the layer (3) which increases the friction coefficient on the surface (5) of the component (6) by depositing the hard particles (1) activated by the non-thermal atmospheric pressure plasma and coated with the adhesive (2) on the surface (5) of the component (6). Said method is particularly more economic for components with complex forms or large dimensions than known methods. No matrix or intermediary layers are required for anchoring the hard particles. The hard particles engage directly in the contact surfaces.