Copper-Carbon Single Phase Material via Electrical Current
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Solution Overview
Problem
Copper-carbon composites phase separate when melted, limiting their usefulness in high-temperature applications due to the separation of carbon from copper, which restricts their thermal and mechanical properties.
Innovation Solution
Incorporating carbon into molten copper metal while applying a sufficient electrical current to form a single phase copper-carbon material that does not phase separate when heated to the melting temperature, using carbonaceous materials like activated carbon, diamond, or graphite, and specific copper alloys to ensure the carbon remains integrated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If copper-carbon composites are formed by mechanical mixing or heating and kneading, then thermal conductivity is improved, but carbon phase separates from copper when melted
Solution Approach 1:
The patent applies parameter changes by utilizing electrical current (amperage) as a new parameter during the melting and mixing process. This electrical parameter enables carbon to become incorporated into the copper metal in a fundamentally different way than mechanical mixing, creating a single phase material that maintains stability at melting temperatures.
Solution Approach 2:
The patent exploits phase transitions by melting the copper metal to incorporate carbon, then utilizing the application of electrical current during the molten state to achieve complete incorporation. The resulting single phase material maintains this phase structure even when re-melted, preventing the phase separation that occurs in conventional copper-carbon composites.
2Temperature
If carbon is mechanically introduced to copper metal, then thermal conductivity is improved, but the composite is limited in high temperature applications
Solution Approach 1:
The patent changes the fundamental parameter of how carbon is introduced to copper - from mechanical mixing to electrical current-driven incorporation during melting. This parameter change creates a single phase material that maintains structural integrity at high temperatures, enabling reliable performance in high temperature applications.
Solution Approach 2:
The patent creates a new type of copper-carbon composite material with a single phase structure. This composite material combines the high thermal conductivity of copper with the stability of carbon incorporation, achieving both improved thermal properties and reliability in high temperature applications where conventional composites fail.
3Ease of manufacture
If conventional copper-carbon composite techniques are used, then manufacturing is simplified, but the material separates into phases when melted
Solution Approach 1:
The patent utilizes phase transitions during the manufacturing process - melting the copper metal and applying electrical current during the molten state to achieve complete carbon incorporation. This approach creates a single phase material that remains stable when re-melted, solving the phase separation problem while maintaining manufacturing feasibility.
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 resulting copper-carbon composition maintains a single phase upon melting and re-melting, enhancing its thermal and mechanical properties, allowing for improved performance in high-temperature applications without carbon separation.
Implementation Method 1
applying a current of sufficient amperage to the molten mixture such that the carbon becomes incorporated into the copper metal
Data Source
AI summary
A copper-carbon composition including copper and carbon, wherein the copper and the carbon form a single phase material, and wherein the carbon does not phase separate from the copper when the material is heated to a melting temperature.