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Measurement of Ti-6Al-4V alloy ignition temperature by reflectivity detection
1School of Electronic Science and Engineering and Clean Energy Materials and Equipment Center, University of Electronic Science and Technology of China, Chengdu 611731, China.
Accurately measuring titanium alloy ignition temperature is crucial for aircraft safety. This study determined titanium alloy ignition temperature using reflectivity detection, achieving high precision during thermal oxidation.
Area of Science:
- Materials Science
- Combustion Science
- Aerospace Engineering
Background:
- Titanium alloy fires are dangerous, especially in aircraft.
- Understanding ignition temperature is key to preventing fires and improving combustion resistance.
Purpose of the Study:
- To accurately measure the ignition temperature of a titanium alloy.
- To evaluate the effectiveness of reflectivity detection for temperature measurement during combustion.
Main Methods:
- Utilized monochromatic temperature and emissivity measurement based on reflectivity detection.
- Employed a specialized titanium burning apparatus for experiments.
- Measured titanium temperatures at 1050 nm and 940 nm during oxidation and combustion stages.
Main Results:
- Reflectivity detection successfully measured titanium alloy ignition temperature.
- Achieved a measurement precision of ±1 °C during thermal oxidation (500-900 °C).
- Ignition process temperatures ranged from 1653 to 1857 °C, with an ignition temperature around 1680 °C.
Conclusions:
- Reflectivity detection is a viable method for determining titanium alloy ignition temperatures.
- The study provides critical data for enhancing aircraft fire safety and material combustion resistance.
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