Superconductive Oxide Coating Laser Processing
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Solution Overview
Problem
Conventional methods for producing superconductive materials require long times, struggle with orientation control, and experience uniformity deterioration due to reactions with support bodies during thermal decomposition and heat treatment.
Innovation Solution
The method involves replacing part of the heat treatment process with laser light irradiation between the application of a metalorganic compound solution and its thermal decomposition, allowing for efficient production of superconductive materials with improved properties and larger areas by scanning laser light with varying intensities and pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If thermal decomposition and heat treatment are executed by conventional heat treatment methods, then superconductive material can be formed, but the production time is long and production efficiency is low
Solution Approach 1:
The patent replaces conventional thermal heat treatment with laser beam irradiation to execute decomposition of organic components and formation of superconductive material. The laser beam provides localized, high-intensity energy that rapidly decomposes the coating solution and forms the superconductive phase, substituting the slow, uniform thermal field with a controllable, high-energy optical field that dramatically reduces processing time and increases production efficiency.
Solution Approach 2:
The patent employs periodic pulsed laser irradiation where the laser beam is irradiated in multiple stages with varying intensities. The initial stage uses weaker irradiation to prevent complete decomposition, followed by stronger irradiation to convert metalorganic compounds into superconductive material. This periodic, staged approach optimizes both decomposition control and superconductive phase formation, achieving high productivity without sacrificing material quality.
2Manufacturing precision
If conventional heat treatment methods are used, then superconductive material can be formed, but orientation control is difficult
Solution Approach 1:
The patent applies laser beam irradiation which inherently provides local quality through its focused, directional energy delivery. The laser can be scanned across the substrate in specific patterns, delivering energy precisely where needed to control the orientation and crystallization of superconductive grains. This localized energy input allows precise control over microstructure development and texture formation, achieving superior orientation control compared to conventional uniform heat treatment.
3Manufacturing precision
If conventional heat treatment is used for large-area production, then material can be produced, but uniformity deteriorates due to reactions with support body
Solution Approach 1:
The laser-based processing method replaces conventional contact or close-proximity heat treatment, eliminating or minimizing interactions between the heating source and the support body. The laser beam passes through air or vacuum to deliver energy, preventing chemical reactions between the support body and processing medium that cause uniformity deterioration. This enables consistent, high-quality superconductive material formation over large substrate areas.
Solution Approach 2:
The staged laser irradiation process with varying intensities ensures uniform processing across large areas. The initial weaker irradiation stage prepares the coating uniformly, and the subsequent stronger stage forms the superconductive phase consistently. This periodic approach with controlled parameters maintains uniformity across the entire processed area, preventing the deterioration that occurs with conventional methods.
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
This approach significantly reduces heat treatment time, enhances production efficiency, and achieves high-quality superconductive materials with improved superconductivity and large-area coverage, suitable for mass production and applications like microwave filters and fault current limiters.
Implementation Method 1
the support body is irradiated with laser light during a period between the steps (1) and (2) from a surface of the support body
Implementation Method 2
a provisional baking step (2) of causing the organic components of the organic compound of the metals to undergo thermal decomposition
Data Source
AI summary
A method of producing a superconductive material involves the step (1) of applying a solution of an organic compound of metals and oxides of the metals forming a superconductive material, onto a support body to be subsequently dried, the provisional baking step (2) of causing organic components of the organic compound of the metals to undergo thermal decomposition, and the main baking process step (3) of causing transformation of the oxides of the metals into the superconductive material, thereby producing an epitaxially-grown superconductive coating material, wherein the support body is irradiated with the laser light during a period between the steps (1) and (2) from a surface of the support body, on the opposite side of the surface coated with the solution of the organic compound of the metals for forming the superconductive material.