Removable Anodising Agent for Local Metal Oxidation
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Solution Overview
Problem
Existing methods for local anodic oxidation of metal surfaces are impractical due to the need for large bath volumes, handling of corrosive liquids, and difficulty in applying anodisation to complex or hard-to-reach areas, with residue removal being a significant challenge.
Innovation Solution
A removable anodising agent comprising an ion conducting medium with acids like phosphoric or organic carboxylic acids, cohesion agents, and an electrically conductive planar structure, allowing for residue-free removal and self-adhesion to the surface, enabling efficient local anodic oxidation without the need for extensive bath processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional bath processing is used for local anodisation, then anodisation can be performed, but large bath volumes are required and it is not economically viable for repair workshops
Solution Approach 1:
The patent extracts the anodisation process from the traditional large-scale bath system and creates a portable, self-contained anodisation agent that can be applied directly to the metal surface. This eliminates the need for large bath volumes while maintaining the anodisation function, making it economically viable for repair workshops.
Solution Approach 2:
The invention applies anodisation locally to only the required areas of the metal surface using a portable agent, rather than requiring the entire surface to be treated in a large bath. This localized approach reduces material consumption and enables economical repair operations.
2Ease of operation
If PANTA method with phosphoric acid gel is used, then local anodisation is possible, but the gel must be fixed to the surface and residues require cleaning
Solution Approach 1:
The patent changes the physical and chemical parameters of the ion-conducting medium by using a paste with specific viscosity characteristics and composition. The paste is formulated to be removable without leaving residues, addressing the cleaning issue while maintaining local anodisation capability. The specific parameter changes in the medium's composition enable easy removal after use.
3Ease of operation
If tampon anodisation with liquid electrolyte is used, then local anodisation can be performed, but the equipment is high in volume, heavy, and requires sequential treatment
Solution Approach 1:
The patent merges the electrolyte, thickening agents, and application medium into a single integrated paste formulation. This combination eliminates the need for separate reservoirs, pumps, and application equipment required by tampon anodisation, significantly reducing equipment volume and weight while enabling local anodisation.
4Adaptability or versatility
If PANTA method is used, then anodisation can be performed, but it can only be used on horizontal surfaces facing upwards
Solution Approach 1:
The patent creates a dynamic, adaptable anodisation agent in paste form that can conform to various surface orientations and geometries. The paste's rheological properties allow it to remain in place on vertical and overhead surfaces during application, enabling anodisation on surfaces of any orientation rather than requiring horizontal positioning.
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 anodising agent allows for efficient, residue-free anodic oxidation of metal surfaces, reducing cleaning efforts and enabling application on complex shapes, with the ability to be used in situ for repair and maintenance, providing a stable oxide layer for improved bonding and corrosion protection.
Implementation Method 1
an ion conducting medium containing an acid selected from the group consisting of phosphoric acid, sulphuric acid and organic carboxylic acids
Implementation Method 2
Anodisation is an electrochemical process by which a porous oxide layer securely bonded to the surface of a metal is created
Implementation Method 3
Anodisation is an electrochemical process by which a porous oxide layer securely bonded to the surface of a metal
Implementation Method 4
one or a plurality of cohesion agents in a sufficient concentration in order to allow the substantially residue-free removal of the anodising agent from the anodically oxidised metal surface
Data Source
AI summary
The invention relates to a removable anodizing agent, in particular for local anodic oxidation of metal surfaces, and its use, and a method for anodic oxidation by means of an anodizing agent according to the invention.