Heterostructure Conductor High-Temperature Operation
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Solution Overview
Problem
Conventional electrical conductors are limited to operating temperatures below 200°C due to organic insulation decomposition and oxide layer formation, and existing high-temperature solutions have drawbacks such as increased electrical resistance, limited shelf-life, and costly processing.
Innovation Solution
A high-temperature heterostructure conductor comprising a copper core with an intermetallic aluminum-nickel layer, a ceramic layer, and a dielectric layer, formed through a multilayer process with heat treatment, to enhance thermal and insulative properties without significant electrical resistance increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If stainless steel clad copper wire is used to achieve high-temperature resistance, then temperature capability is improved, but electrical resistance increases
Solution Approach 1:
The conductor is segmented into multiple functional layers: copper core for electrical conductivity, intermetallic layer for oxidation resistance, and ceramic coating for high-temperature insulation. Each layer performs its specific function optimally without compromising the others.
Solution Approach 2:
The invention uses a composite structure combining copper, intermetallic compounds, and ceramic materials to achieve both high electrical conductivity and high-temperature resistance, overcoming the limitations of single-material solutions like stainless steel clad copper.
2Temperature
If glass insulating layer is applied to stainless steel clad copper wire to achieve thermal and insulative properties, then temperature resistance is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The ceramic coating is applied to the conductor in a pre-coated wire form, preparing the high-temperature protective layer in advance. This allows the conductor to be ready for high-temperature applications without requiring complex on-demand coating processes.
Solution Approach 2:
The invention changes the material parameters by using ceramic coatings with specific thickness ranges and compositional characteristics that provide adequate thermal and insulative protection while maintaining manufacturability and reducing process complexity compared to traditional glass insulating layers.
3Temperature
If pre-coating process is used to apply ceramic layer to achieve high-temperature resistance, then temperature capability is improved, but shelf-life is limited
Solution Approach 1:
The pre-coated wire is designed with a ceramic coating that provides sufficient protection during storage and installation but is intended to be completed with final ceramic layer formation during the finishing heat treatment process, effectively resetting the shelf-life concern by completing the protective structure in-situ.
4Reliability
If multiple coating steps are used to achieve desired insulative properties, then insulation performance is improved, but processing time and cost increase
Solution Approach 1:
The invention merges the ceramic coating application into a single integrated step using pre-coated wire with controlled ceramic layer deposition, eliminating the need for multiple separate coating steps while maintaining adequate insulative properties through optimized coating parameters.
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 enables long-term operation above 400°C with improved conductivity and reduced processing costs, eliminating coating thickness limitations and shelf-life constraints.
Implementation Method 1
an intermetallic layer that is formed on and surrounds the first electrically conductive material
Implementation Method 2
The ceramic layer is formed or disposed on and surrounds the second electrically conductive material
Implementation Method 3
exposing at least the multilayer conductor and the dielectric material to a finishing heat treatment
Data Source
AI summary
A high-temperature heterostructure conductor includes an electrically conductive heterostructure core, a second electrically conductive material, a ceramic layer and a dielectric layer. The electrically conductive heterostructure core includes a first electrically conductive material and an intermetallic layer that is formed on and surrounds the first electrically conductive material. The second electrically conductive material surrounds the intermetallic layer. The ceramic layer is formed or disposed on and surrounds the second electrically conductive material. The dielectric layer is disposed on and surrounding the ceramic layer.