Thin Ceramic Sheet Cutting for HTS Substrate Precision
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Solution Overview
Problem
Conventional ceramic sheets do not have the requisite dimensions and properties needed for utilization in high temperature superconductor (HTS) applications, particularly as substrates or radiation insulation layers, due to issues with dielectric constants, radiation hardness, and dimensional suitability.
Innovation Solution
Ceramic sheets with specific dimensions (thickness ≤ 100 μm, length ≥ 10 m, width ≤ 12 mm) and properties (tensile strength ≥ 400 MPa, radiation resistance ≥ 50 MGy, thermal conductivity ≥ 1 W/mK, resistivity ≥ 5×10−5 Ω-cm) are cut into long, thin sections using methods like non-diffracting beam processing, laser ablation, or roll-to-roll cutting, with optional coating layers of materials like yttria-stabilized zirconia or rare-earth barium copper oxide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional ceramic sheets are used, then manufacturing simplicity is maintained, but dimensional suitability for HTS applications deteriorates
Solution Approach 1:
The patent segments the ceramic sheet into long, thin strips with specific dimensions (length ≥ 10m, width ≤ 12mm, thickness ≤ 100μm) suitable for HTS applications. This segmentation transforms conventional ceramic sheets into precisely dimensioned strips that meet the stringent dimensional requirements while maintaining manufacturing feasibility through controlled processing.
Solution Approach 2:
The patent applies parameter changes by controlling critical dimensions (length, width, thickness) and material properties (grain size ≤ 0.2μm, porosity ≤ 5%) to achieve the desired dimensional suitability. These parameter adjustments transform conventional ceramic sheets into HTS-appropriate strips without fundamentally changing the manufacturing process.
2Manufacturing precision
If ceramic sheets are cut into long, thin sections, then dimensional suitability for HTS applications is improved, but manufacturing complexity increases
Solution Approach 1:
The patent replaces conventional mechanical cutting methods with non-diffracting beam processing or laser ablation. This substitution enables precise cutting of long, thin ceramic strips with controlled dimensions while reducing mechanical complexity and achieving superior edge quality and dimensional accuracy compared to traditional mechanical sawing or breaking.
3Manufacturing precision
If thickness is reduced to ≤ 100 μm, then suitability for HTS substrate applications is improved, but mechanical strength deteriorates
Solution Approach 1:
The patent changes the grain size parameter to ≤ 0.2μm and controls porosity to ≤ 5%, which significantly enhances the mechanical strength of the thin ceramic sheet. This parameter optimization allows the sheet to achieve thickness ≤ 100μm while maintaining sufficient mechanical strength through refined microstructure rather than increased thickness.
Solution Approach 2:
The patent employs composite material strategies by incorporating coating layers (such as yttria-stabilized zirconia or rare-earth barium copper oxide) on the ceramic sheet surfaces. These coatings enhance the mechanical properties and radiation resistance of the thin ceramic substrate, compensating for the reduced bulk strength associated with thin dimensions.
4Strength
If grain size is reduced to ≤ 0.2 μm and porosity to ≤ 5%, then mechanical strength and radiation resistance are improved, but manufacturing difficulty increases
Solution Approach 1:
The patent optimizes manufacturing parameters including grain size (≤ 0.2μm), porosity (≤ 5%), and density to achieve the desired mechanical strength and radiation resistance. These parameter changes are implemented through controlled sintering processes and material composition adjustments that balance microstructure refinement with manufacturing feasibility, avoiding excessive complexity while achieving superior properties.
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 ceramic strips exhibit improved mechanical strength, radiation resistance, and thermal conductivity, suitable for use as substrates or radiation insulation layers in HTS devices, enhancing performance in high-radiation environments.
Implementation Method 1
creating a first slit in the ceramic sheet to form a first section and a second section
Data Source
AI summary
A ceramic sheet includes a first surface, a second surface opposite the first surface, and a pair of parallel edges extending therebetween. A thickness of the ceramic sheet is defined between the first and second surfaces, a width of the ceramic sheet is defined between the pair of parallel edges, and a length of the ceramic sheet is defined as a dimension orthogonal to both the thickness and the width. The thickness is less than or equal to 100 μm, the length is greater than or equal to 10 m, and the width is less than or equal to 12 mm. The ceramic sheet has a grain size of less than or equal to 0.2 μm and a porosity of less than or equal to 5%.