PEO Ceramic-FRP Composite for Wear Resistance and Adhesion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Fiber reinforced plastics face challenges with low wear resistance and poor adhesion between the plastic and ceramic or metallic layers, particularly when in contact with other parts, leading to issues like galvanic corrosion.
Innovation Solution
The use of plasma electrolytic oxidation (PEO) to create a ceramic material with high porosity on the surface facing the fiber reinforced plastic, which enhances adhesion and prevents galvanic corrosion, while forming a hard surface for improved wear resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a ceramic or metallic layer is applied on fiber reinforced plastic by thermal spray techniques, then wear resistance is improved, but adhesion between the plastic and the layer remains poor
Solution Approach 1:
The patent applies preliminary action by treating the fiber reinforced plastic surface with corona discharge before thermal spraying. This pre-treatment modifies the surface properties to enhance adhesion, ensuring that when the ceramic or metallic layer is subsequently applied by thermal spray, it bonds strongly to the substrate. The corona treatment creates a more reactive surface that improves mechanical and chemical bonding with the coating material.
Solution Approach 2:
The patent employs parameter changes by controlling the glass transition temperature of the polymer matrix between -50°C and +150°C through selection of appropriate polymers. This parameter optimization ensures the polymer is in a rubbery state during corona treatment, maximizing surface modification effectiveness and adhesion while maintaining wear resistance properties of the ceramic or metallic layer.
2Weight of moving object
If fiber reinforced plastic is used for light and strong components, then weight is reduced, but wear resistance becomes insufficient
Solution Approach 1:
The patent applies composite materials by combining fiber reinforced plastic with a ceramic or metallic coating layer. The fiber reinforced plastic provides lightweight structural properties, while the externally applied ceramic or metallic layer contributes wear resistance. This composite structure allows the component to simultaneously achieve low weight and high wear resistance, resolving the contradiction between these two properties.
Solution Approach 2:
The patent applies local quality by providing different properties in different regions of the component. The bulk fiber reinforced plastic maintains lightweight characteristics, while the surface region receives a ceramic or metallic coating that provides enhanced wear resistance. This localized property differentiation allows the component to optimize both weight and wear resistance in their respective regions.
3Strength
If carbon fibers are used in fiber reinforced plastic, then strength is improved, but galvanic corrosion occurs when in contact with aluminium
Solution Approach 1:
The patent applies the intermediary principle by introducing a polymer matrix as a mediator between the carbon fibers and aluminium. The polymer acts as an electrical insulator that prevents direct electrical contact between the conductive carbon fibers and aluminium, thereby eliminating the galvanic corrosion pathway while allowing the carbon fiber-reinforced plastic to maintain its structural strength.
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 solution achieves excellent adhesion and significantly improves wear resistance by forming a hard ceramic surface that prevents galvanic corrosion and enhances the mechanical properties of fiber reinforced plastic components.
Implementation Method 1
the ceramic material is prepared by plasma electrolytic oxidation of aluminium
Implementation Method 2
The ceramic material in the object has a high porosity on the surface facing the fiber reinforced plastic, resulting in an excellent adhesion
Data Source
AI summary
An object including a. a fiber reinforced plastic and b. a ceramic material, wherein the ceramic material is prepared by plasma electrolytic oxidation of aluminium. A process for the preparation of the object, including the steps of a. providing aluminium, a fiber reinforced plastic and a resin, or providing aluminium and a precursor of a fiber reinforced plastic comprising fibers and a resin, b. treating, at least partially, the aluminium with plasma electrolytic oxidation to provide a ceramic material, c. attaching the ceramic material to the fiber reinforced plastic with the resin, or attaching the ceramic material to the fibers with the resin, d. curing the resin to provide the object including the fiber reinforced plastic and the ceramic material at least partly bound to the fiber reinforced plastic.