Fiber-Reinforced HTS Compositions for Crack-Resistant Shaping
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Solution Overview
Problem
High-temperature superconducting (HTS) materials face challenges due to brittleness, difficulty in forming shapes, and complex production processes, which hinder their practical application, as they are prone to cracking and require specific oxygen stoichiometry, making reinforcement with conventional materials challenging.
Innovation Solution
Incorporating continuous, long fibers such as SiC fibers into the HTS material to prevent contamination and cracking during crystal formation, and using these fibers to create reinforced HTS compositions that can be processed through subtractive sculpting for precise shaping and strengthening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional reinforcement materials are used to relieve brittleness, then strength is improved, but oxidation during production interferes with crystal formation and oxygen stoichiometry
Solution Approach 1:
A coating layer acts as an intermediary between the reinforcement material and the HTS material. The coating prevents oxidation of the reinforcement material during sintering while allowing the reinforcement to fulfill its strengthening function. This mediator resolves the contradiction by blocking the harmful oxidation pathway without interfering with the HTS crystal formation or oxygen stoichiometry.
Solution Approach 2:
The invention uses composite structures where reinforcement materials (such as metal fibers or particles) are combined with HTS materials in a controlled manner. By creating a composite where the reinforcement is protected or integrated properly, the strength is enhanced without the reinforcement causing oxidation interference during the sensitive sintering process.
2Reliability
If HTS materials are cooled using liquid helium or liquid hydrogen, then superconductivity is achieved, but cost and safety issues arise
Solution Approach 1:
The invention changes the temperature parameter at which superconductivity is achieved by developing HTS materials with higher critical temperatures. By formulating materials that maintain superconducting properties at liquid nitrogen temperatures (77K) rather than requiring liquid helium temperatures (4K), the cost and safety issues are resolved while preserving the superconductivity function.
3Reliability
If HTS materials are processed through multiple calcination steps, then superconducting properties are achieved, but production complexity increases
Solution Approach 1:
The invention performs preliminary actions during material formulation and precursor preparation to pre-establish the correct stoichiometry and phase structure. By preparing precursors with controlled composition and structure before the final sintering step, the need for multiple iterative calcination steps is reduced, simplifying the overall production process while ensuring reliable superconducting properties.
Solution Approach 2:
The invention applies local quality control by carefully controlling the composition, particle size, and distribution of precursor materials in different regions of the batch. This localized optimization allows for more predictable and uniform reactions during sintering, reducing the need for multiple processing steps and simplifying the overall production complexity.
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 use of continuous fibers stabilizes the HTS material, allowing for the production of robust, shaped HTS components with improved strength and reduced brittleness, enabling more efficient and cost-effective manufacturing and wider commercial applications.
Implementation Method 1
Incorporating continuous, long fibers such as SiC fibers into the HTS material to prevent contamination and cracking during crystal formation
Implementation Method 2
Superconductivity is the property of transmitting electricity with no or little resistance
Implementation Method 3
HTS can achieve superconductivity at temperatures as high as 138 K (−135° C.) and can be cooled using substances such as liquid nitrogen
Data Source
AI summary
A composition comprises a plurality of continuous ordered fibers embedded in a high temperature superconducting material, wherein the plurality of continuous ordered fibers comprise a core and a reinforcing material. A composition comprises one or more large diameter continuous fibers embedded in a high temperature superconducting material; and one or more small diameter continuous fibers embedded in a high temperature superconducting material. A composition comprising one or more continuous fibers embedded in a high temperature superconducting material, wherein a fiber of the one or more continuous fibers comprise a core and reinforcing material, and wherein one or more magnetic particles are embedded in the core of the fiber.