Graphite exhibits high thermal stability, particularly at elevated temperatures and under specific environmental conditions.
Its stability is influenced by factors such as temperature, pressure, and exposure to air.
What is the Thermal Stability of Graphite? (5 Key Points Explained)
1. High-Temperature Stability under Vacuum
Graphite can operate at extremely high temperatures without significant degradation when used in vacuum environments.
At pressures down to 10-2 torr, it can be used up to 2450°C.
At 10-4 torr, it can be used up to 2150°C.
This high-temperature capability is crucial for applications in industries such as metallurgy and semiconductor manufacturing.
2. Oxidation and Air Exposure
The thermal stability of graphite is compromised when exposed to air.
Oxidation begins at approximately 500°C.
Under certain conditions, it can lose up to 1% of its mass per day.
This degradation can lead to structural failure after repeated exposure to elevated temperatures in air.
3. Mechanical Strength and Thermal Conductivity
Graphite exhibits unique properties where its mechanical strength increases as the temperature rises.
This is due to a decrease in internal stresses at higher temperatures, which enhances its mechanical robustness.
Additionally, graphite has high thermal conductivity, which is greater than many common metals and increases with temperature.
However, it eventually decreases at very high temperatures.
4. Applications and Material Properties
Isostatic graphite, a type of fine-grain graphite, is used in over 30 industries due to its high thermal and chemical resistance, excellent thermal shock resistance, and high electrical conductivity.
It is also easy to machine and can be produced with very high purity.
These properties make it ideal for various applications, including nuclear, metallurgical, and semiconductor industries.
5. Corrosion Resistance and Thermal Shock Resistance
Graphite is known for its strong corrosion resistance to acids and alkalis, which contributes to its stability in various chemical environments.
It also has strong thermal shock resistance, which is crucial for maintaining structural integrity when rapidly heated or cooled.
Continue exploring, consult our experts
Experience the unparalleled thermal stability and exceptional material properties of graphite with KINTEK SOLUTION.
Our specialized range of products is meticulously designed to meet the stringent demands of high-temperature environments, ensuring superior performance in metallurgy, semiconductor, and nuclear industries.
Explore our cutting-edge graphite solutions today and unlock the power of durability and conductivity for your applications.
