Tantalum carbide (TaC) is an ultra-high temperature ceramic material with high temperature resistance, high density, high compactness; high purity, impurity content <5PPM; and chemical inertness to ammonia and hydrogen at high temperatures, and good thermal stability.
The so-called ultra-high temperature ceramics (UHTCs) usually refer to a class of ceramic materials with a melting point of more than 3000℃ and used in high temperatures and corrosive environments (such as oxygen atomic environments) above 2000℃, such as ZrC, HfC, TaC, HfB2, ZrB2, HfN, etc.
Tantalum carbide has a melting point of up to 3880℃, has high hardness (Mohs hardness 9-10), large thermal conductivity (22W·m-1·K-1), large bending strength (340-400MPa), and small thermal expansion coefficient (6.6×10-6K-1), and exhibits excellent thermochemical stability and excellent physical properties. It has good chemical compatibility and mechanical compatibility with graphite and C/C composites. Therefore, TaC coatings are widely used in aerospace thermal protection, single crystal growth, energy electronics, and medical devices.
Tantalum carbide (TaC) is a member of the ultra-high temperature ceramic family!
As modern aircraft such as aerospace vehicles, rockets, and missiles develop towards high speed, high thrust, and high altitude, the requirements for high temperature resistance and oxidation resistance of their surface materials under extreme conditions are becoming higher and higher. When an aircraft enters the atmosphere, it faces extreme environments such as high heat flux density, high stagnation pressure, and fast airflow scouring speed, as well as chemical ablation caused by reactions with oxygen, water vapor, and carbon dioxide. When the aircraft flies out of and into the atmosphere, the air around its nose cone and wings will be severely compressed and produce greater friction with the surface of the aircraft, causing its surface to be heated by airflow. In addition to being aerodynamically heated during flight, the surface of the aircraft will also be affected by solar radiation, environmental radiation, etc. during flight, causing the surface temperature of the aircraft to continue to rise. This change will seriously affect the service status of the aircraft.
Tantalum carbide powder is a member of the ultra-high temperature resistant ceramic family. Its high melting point and excellent thermodynamic stability make TaC widely used in the hot end of aircraft, for example, it can protect the surface coating of the rocket engine nozzle.
Post time: Aug-06-2024