Composite Electronic Chassis With Anodized Coating for Corrosion and Heat
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Solution Overview
Problem
Existing electronic device chassis materials, such as magnesium and carbon fiber reinforced plastics, face issues with corrosion resistance, recyclability, thermal conductivity, and aesthetic finish, leading to overheating, increased weight, and non-sustainable recycling processes.
Innovation Solution
Implementing anodized aluminum coatings on magnesium or aluminum layers, combined with carbon fiber reinforced plastics and polyether ether ketone thermoplastics, to enhance corrosion resistance, recyclability, and thermal conductivity, while providing a premium aesthetic finish.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If painting is applied to magnesium chassis, then corrosion resistance is improved, but recyclability deteriorates and environmental sustainability worsens
Solution Approach 1:
The patent applies anodization, which is an electrochemical process that changes the surface parameters of the magnesium chassis by forming a porous oxide layer. This modifies the surface properties to provide corrosion resistance without requiring paint coatings, thereby maintaining recyclability and environmental sustainability.
Solution Approach 2:
The patent creates a composite structure by combining the magnesium chassis with an anodized oxide layer. This composite material approach provides both the structural integrity of magnesium and the corrosion resistance of the oxide layer, while avoiding the need for additional paint layers that would harm recyclability.
2Weight of moving object
If CFRP is used for chassis, then weight is reduced, but thermal conductivity deteriorates causing overheating
Solution Approach 1:
The patent uses a composite structure combining CFRP (carbon fiber reinforced plastic) with thermally conductive materials or designs. This composite approach maintains the lightweight advantage of CFRP while addressing the thermal conductivity issue through strategic material selection or thermal management integration.
3Shape
If painting is applied to chassis, then aesthetic appearance is improved, but manufacturing complexity and energy consumption increase
Solution Approach 1:
The anodization process allows for aesthetic customization by controlling the thickness and porosity of the oxide layer, which can be colored through electrolytic dyeing. This provides diverse aesthetic appearances directly through the anodization process itself, eliminating the need for separate painting operations and reducing manufacturing complexity.
Solution Approach 2:
The anodization process is self-contained and integrates the aesthetic finishing directly into the surface treatment process. The porous oxide layer formed during anodization can be directly colored and sealed, providing a complete aesthetic finish without requiring additional paint application steps.
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 anodized aluminum coating on magnesium chassis improves corrosion resistance, reduces weight, enhances thermal conductivity, and enables sustainable recycling, offering a durable and visually appealing chassis solution.
Implementation Method 1
an anodized aluminum layer on a magnesium chassis
Implementation Method 2
Anodizing or anodization is a process that increases the thickness of a natural oxide layer on the surface of metals
Implementation Method 3
The anodized aluminum layer provides corrosion resistance, reduced weight, improved thermal conductivity
Data Source
AI summary
Systems, apparatus, articles of manufacture, and methods are disclosed related to composite materials for electronic device chassis. An example electronic device includes a chassis including a layer of a magnesium alloy or a layer of polyether ether ketone and carbon fiber reinforced plastic and an anodized aluminum coating.