Magnesium Alloy Connection Part With Transition Layer Corrosion Isolation
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Solution Overview
Problem
Magnesium alloy components in electronic devices face challenges with galvanic corrosion when connected to other metals, leading to reduced service life and instability in electrical connections.
Innovation Solution
A magnesium alloy connection mechanical part is designed with a transition layer that conducts electricity, allowing for electrical connection between the magnesium alloy body and a conducting layer while separating them to prevent galvanic corrosion, and using a sealing material to isolate the magnesium alloy body from the outside environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnesium alloy body is directly connected to the conducting layer, then electrical connection is achieved, but galvanic corrosion occurs at the joint interface
Solution Approach 1:
The patent introduces a transition layer as an intermediary between the magnesium alloy body and the conducting layer. This transition layer serves dual functions: it provides electrical conductivity to maintain electrical connection while simultaneously acting as a barrier to prevent galvanic corrosion between the dissimilar metals. The transition layer includes a first sub-layer connected to the magnesium alloy body and a second sub-layer connected to the conducting layer, creating a gradual transition that reduces galvanic potential difference.
2Object-affected harmful factors
If the magnesium alloy body is isolated from the outside environment, then corrosion resistance is improved, but electrical connection to the outside is blocked
Solution Approach 1:
The patent applies different protective measures to different regions of the magnesium alloy body. The majority of the magnesium alloy body is covered by a protective layer (such as anodizing or coating) to provide corrosion resistance and isolation from the environment. However, at the specific location where electrical connection is needed, the protective layer is designed to expose or connect to the transition layer, which then provides the electrical pathway. This localized approach allows simultaneous achievement of corrosion protection and electrical connectivity.
3Object-affected harmful factors
If a protective layer is applied to the magnesium alloy body, then corrosion resistance is improved, but electrical conductivity is reduced
Solution Approach 1:
The protective layer is applied selectively rather than uniformly across the entire magnesium alloy body. The protective layer covers regions where corrosion protection is needed but electrical connection is not required. At the connection region, the protective layer is either removed, made thinner, or designed with conductive properties, allowing the transition layer to provide the electrical pathway. This spatial differentiation of protective layer properties maintains both corrosion resistance and electrical conductivity where needed.
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 solution effectively prevents galvanic corrosion, prolongs the service life of the magnesium alloy connection mechanical part, and ensures a stable electrical connection by isolating the magnesium alloy body from oxidation and corrosion.
Implementation Method 1
a transition layer that can conduct electricity is formed in a region in which a magnesium alloy body is connected to a conducting layer
Implementation Method 2
the connection through hole is sealed by using the transition layer or the conducting layer and a sealing material, so that the magnesium alloy body is isolated from the outside
Data Source
AI summary
This application discloses a magnesium alloy connection mechanical part, an electronic device, and a component forming method. A magnesium alloy body and a conducting layer, and a transition layer that can conduct electricity is formed in a region in which the magnesium alloy body is connected to the conducting layer, and an electrical connection between the magnesium alloy body and the conducting layer is implemented by using the transition layer. The magnesium alloy body and the conducting layer are separated by using the transition layer. In addition, the magnesium alloy body is isolated from the outside by using the conducting layer, a sealing material, and the transition layer, to avoid oxidation or corrosion of the magnesium alloy body, and further avoid galvanic corrosion between structures in the magnesium alloy connection mechanical part.