Arcuate Wall Cooling Chamber for Thermal Barrier Coatings
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Solution Overview
Problem
The existing methods for cooling down thermal barrier coatings post-deposition are time-consuming and not cost-effective, particularly in reducing thermal shock between the ceramic top coat and the metallic bond coat.
Innovation Solution
A reflective cool down chamber with an arcuate wall and infrared lamps is used to gradually reduce the temperature of workpieces by reflecting and diffusing infrared energy, allowing for faster and more uniform cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If workpieces are slowly cooled down in a preheated oven to reduce thermal shock, then the thermal shock between ceramic top coat and metallic bond coat is reduced, but the cooling process becomes time-consuming and less cost-effective
Solution Approach 1:
The invention changes the cooling parameters by introducing controlled infrared radiation to maintain optimal cooling rates. The system dynamically adjusts radiation intensity and cooling environment parameters to achieve fast cooling while maintaining thermal shock reduction, transforming the traditional slow oven cooling into a controlled rapid cooling process that preserves coating integrity.
Solution Approach 2:
The invention replaces the traditional thermal conduction-based oven cooling system with a radiation-based cooling system using infrared lamps and controlled atmospheric conditions. This substitution enables precise control over cooling rates and achieves rapid cooling without the time delays inherent in conventional conduction-based methods.
2Reliability
If traditional oven cooling is used, then thermal shock is reduced, but the process is not cost-effective
Solution Approach 1:
The invention implements continuous controlled cooling through automated infrared radiation systems and real-time temperature monitoring. This continuous action eliminates idle time and optimizes every phase of the cooling process, increasing productivity and cost-effectiveness while maintaining the essential function of thermal shock reduction throughout the entire cooling duration.
Solution Approach 2:
The system dynamically changes cooling parameters including radiation intensity, atmospheric composition, and cooling duration to optimize both thermal shock protection and process efficiency. By adjusting these parameters in real-time, the system achieves rapid cooling that is both reliable and cost-effective.
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 method significantly reduces temperature gradients and cooling rates, enhancing the efficiency and cost-effectiveness of the cooling process while preventing spallation, thereby improving the thermal management of thermal barrier coatings.
Implementation Method 1
directing infrared energy from an infrared lamp at the arcuate wall
Implementation Method 2
reflecting and diffusing infrared energy
Implementation Method 3
reflective cool down chamber with at least one arcuate wall
Data Source
AI summary
A coating system including a reflective cool down chamber with at least one arcuate wall; and an infrared lamp directed at the arcuate wall.