Electrodeposition of Metal Layer on Airfoil Leading Edge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The geometry of the leading edge on airfoils in gas turbine engines, featuring multiple peaks and valleys, complicates the adherence of preformed metal edges, leading to inefficiencies in protection and performance.
Innovation Solution
An electrically conductive coating is applied to the airfoil surface, facilitating the direct deposition of a metal layer through electrodeposition, which bonds strongly to the airfoil, even on complex geometries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If preformed metal edges are used on airfoils with complex leading edge geometry, then the airfoil can be protected, but the adherence becomes difficult and inefficient
Solution Approach 1:
The patent replaces mechanical adhesion methods (bonding preformed metal edges through physical attachment) with an electrochemical deposition process. By applying an electrically conductive coating and using electrodeposition, the metal layer is chemically bonded to the airfoil surface through electrochemical reactions, eliminating the difficulties of mechanical attachment on complex geometries.
Solution Approach 2:
The patent introduces an electrically conductive coating as an intermediary layer between the airfoil surface and the metal layer. This coating enables the electrodeposition process by providing electrical conductivity, allowing the metal layer to be deposited uniformly on complex geometries that would otherwise be difficult to protect.
2Ease of manufacture
If conventional coating methods are used on complex geometries with peaks and valleys, then the coating process is simple, but uniform coverage is difficult to achieve
Solution Approach 1:
The patent replaces conventional mechanical coating methods (spraying, dipping, or brushing) with electrodeposition. The electrochemical process naturally distributes metal ions uniformly across the entire surface, including peaks and valleys, through electrical field distribution, achieving uniform coverage without complex coating procedures.
Solution Approach 2:
The patent changes the fundamental parameter of the coating process from mechanical application to electrochemical deposition. By controlling electrical parameters (current density, voltage, electrolyte composition), the process achieves uniform metal distribution on complex geometries, transforming the coating mechanism to enable precise control over coverage uniformity.
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 method ensures a robust and efficient metal layer deposition on airfoils, enhancing protection and performance by providing a strong bond and uniform coverage, even on surfaces with peaks and valleys.
Implementation Method 1
depositing, via an electrodeposition process, a metal layer on the electrically conductive coating
Implementation Method 2
at least partially curing the resin forming an electrically conductive coating
Data Source
AI summary
A component includes a metal layer disposed over an electrically conductive coating. The component includes a non-woven fiber layer disposed on a coating region of the component. The electrically conductive coating includes a resin with metal particles dispersed therein. The electrically conductive coating is disposed on the non-woven fiber layer. The metal layer is disposed on the electrically conductive coating.