Titanium Foil Coating for Corrosion-Resistant Aluminum Rails
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Commercial aircraft rails made of aluminum are prone to corrosion, necessitating frequent replacements during maintenance, while titanium rails are costly, presenting a need for a cost-effective corrosion-resistant alternative.
Innovation Solution
A method involving coating a metallic support profile with a thin layer of corrosion-resistant material, such as titanium foil, using an adhesive substance and a compacting element to ensure uniform bonding, facilitated by a system with a receptacle, membrane, and drive device for applying pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If aluminum rails are used, then manufacturing cost is reduced, but corrosion resistance deteriorates
Solution Approach 1:
The patent applies a composite structure consisting of an aluminum rail base material combined with a titanium coating layer. This composite approach allows the rail to benefit from the low cost and good mechanical properties of aluminum while gaining the superior corrosion resistance of titanium through the coating layer, thus resolving the contradiction between manufacturing cost and corrosion resistance.
Solution Approach 2:
The patent introduces an adhesive layer as an intermediary between the aluminum rail and the titanium coating. This adhesive mediator ensures proper bonding and adhesion between the two materials, enabling the composite structure to function effectively and maintain both cost-effectiveness and corrosion resistance.
2Reliability
If titanium rails are used, then corrosion resistance is improved, but manufacturing cost increases
Solution Approach 1:
The patent segments the rail structure into two distinct parts: the aluminum base rail that provides structural integrity and bears the load, and the titanium coating layer that provides corrosion protection. This segmentation allows each material to perform its optimal function while reducing the overall amount of expensive titanium needed, thus lowering manufacturing cost while maintaining corrosion resistance.
Solution Approach 2:
The patent applies titanium coating only to the surfaces of the aluminum rail that are exposed to corrosive environments, rather than making the entire rail from titanium. This local application of corrosion-resistant material optimizes the distribution of expensive material where it is most needed, reducing overall manufacturing cost while maintaining effective corrosion protection.
3Ease of manufacture
If a thin layer of corrosion-resistant material is applied, then manufacturing cost is reduced, but coating uniformity deteriorates
Solution Approach 1:
The adhesive layer serves as an intermediary that facilitates uniform distribution and adhesion of the thin titanium coating layer onto the aluminum rail surface. This intermediary layer ensures that even thin coatings are applied uniformly and adhere properly, preventing coating defects while minimizing material consumption.
Solution Approach 2:
The patent employs a compaction device with controlled pressure application to replace manual or less precise coating methods. This mechanical system ensures uniform pressure distribution during coating application, achieving consistent coating thickness and uniformity while using minimal material.
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
Provides a cost-effective corrosion protection for aluminum rails, ensuring uniform thickness and bonding, reducing maintenance costs and extending the lifespan of aircraft components.
Implementation Method 1
applying an adhesive, curable substance to at least one of the surface to be coated and the layer element
Implementation Method 2
pressing the layer element onto the surface to be coated by means of the compacting element to obtain a predetermined joint thickness occupied by the adhesive substance
Implementation Method 3
curing the adhesive substance while maintaining the joint thickness to generate a bond
Data Source
AI summary
A method for coating a metallic support profile with a layer of a corrosion-resistant material, includes providing the metallic support profile with a surface to be coated, providing a layer element of the corrosion-resistant material adapted to the surface to be coated, applying an adhesive, curable substance to at least one of the surface to be coated and the layer element, applying the layer element to the surface to be coated, covering the arrangement of support profile and layer element by a compacting element, pressing the layer element onto the surface to be coated by the compacting element to achieve a predetermined joint thickness occupied by the adhesive substance, curing the adhesive substance while maintaining the joint thickness to generate a bond, and removing the compacting element.