Metallic Composite Structure for Conductivity-Strength Balance
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Solution Overview
Problem
Existing metallic structures fail to achieve a desired combination of higher electrical conductivity and mechanical strength, particularly in applications where both properties are crucial, such as in connectors and wires, due to issues like inhomogeneous distribution of carbon nanotubes and high processing costs.
Innovation Solution
A metallic structure is designed with a mechanically stronger element surrounded by higher electrical conductivity elements, or vice versa, using ultraconductive copper composites with graphene or carbon nanotubes, in various configurations such as layered stacks or coaxial structures, to enhance both electrical and mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carbon nanotubes are added to copper to enhance electrical conductivity, then electrical conductivity is improved, but inhomogeneous distribution occurs due to density differences causing separation during processing
Solution Approach 1:
The patent uses composite materials by combining copper with carbon nanotubes and graphene to create ultraconductive copper composites. This resolves the contradiction by integrating multiple materials with complementary properties - copper provides base conductivity while carbon nanotubes and graphene enhance electrical conductivity and mechanical strength simultaneously
Solution Approach 2:
The patent changes physical parameters by controlling the density and distribution of carbon nanotubes through specific processing conditions. By adjusting processing parameters such as temperature, pressure, and mixing conditions, the patent achieves homogeneous distribution of carbon nanotubes in the copper matrix, preventing separation due to density differences
2Reliability
If processes are developed to produce ultraconductive materials, then electrical conductivity is enhanced, but manufacturing complexity increases due to multiple post processing treatment steps
Solution Approach 1:
The patent merges multiple functions into a single integrated structure - ultraconductive copper composites that simultaneously provide enhanced electrical conductivity, mechanical strength, and thermal management. This consolidation reduces the need for multiple separate processing steps and post-treatments, simplifying the overall manufacturing process
Solution Approach 2:
The ultraconductive copper composites serve multiple functions simultaneously - electrical conduction, mechanical reinforcement, and thermal management. This multi-functionality eliminates the need for separate components and processing steps for each function, thereby reducing process complexity
3Reliability
If copper is used as a conductive material, then electrical conductivity is achieved, but mechanical strength is insufficient for applications requiring both properties
Solution Approach 1:
The patent employs composite materials combining copper with carbon nanotubes and graphene. The carbon-based materials provide mechanical reinforcement while maintaining or enhancing electrical conductivity, thus resolving the contradiction between electrical conductivity and mechanical strength
Solution Approach 2:
The patent applies carbon nanotubes and graphene specifically in regions where mechanical reinforcement is needed while maintaining copper's inherent electrical conductivity in conduction paths. This localized enhancement optimizes both electrical and mechanical properties 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
The proposed structure achieves a balanced combination of electrical conductivity and mechanical strength, improving wear resistance, thermal management, and RF conductivity, making it suitable for diverse applications including connectors, cables, and heat sinks.
Implementation Method 1
The composite structure provides electron path tunnels between the copper layer and the first and second graphene layers. The electron path tunnels may enhance the bulk electrical conductivity.
Implementation Method 2
The electrical connector has a chemical vapor deposition monolayer graphene sheet sandwiched between two copper layers
Implementation Method 3
Ultraconductive copper has promises of enhanced electrical conductivity, higher strength and better thermal management characteristics.
Data Source
AI summary
The present invention relates to metallic structure with desired combinations of mechanical and electrical characteristics formed of a higher electrical conductivity element with a mechanically stronger element.