Application of high temperature absorbing materials made of silicon carbide (SiC) on the surface of hypersonic aircraft and engine exhaust nozzles

Silicon carbide (SiC) is an important materialHigh temperature absorbing materialIt has the following characteristics:

1. Broadband absorption: SiC has good absorption performance in a wide frequency range and can be used for electromagnetic wave absorption in various frequency ranges.

2. High absorption rate: SiC has a high absorption rate for electromagnetic waves and can effectively convert electromagnetic wave energy into thermal energy.

3. High temperature stability: SiC has a high melting point and thermal stability, which can maintain its absorbing properties in high temperature environments.

4. Corrosion resistance: SiC has good corrosion resistance to chemicals such as acid and alkali, and can be used in harsh environments.

In addition, SiC/SiC composite materials have high strength and oxidation resistance, making them the most importantthermal structure materialone of. On the surface of an aircraft, SiC can be used for multiple components such as the tail wing, flat wing plates and leading edge wing plates, high-temperature zone cover plates, brake discs, etc.
SiC is one of the most important high-temperature absorbing materials, and the high strength and oxidation resistance of SiC/SiC composite materials make it one of the most important thermal structural materials. Compared with C/SiC, SiC/SiC not only has higher mechanical properties, better oxidation resistance, and longer high-temperature service life, but also has better absorption performance.

On the surface of the aircraft, Advanced Institute of TechnologySiC absorbing materialCan be used for multiple components such as aircraft tail fins, flat wing plates, leading edge wing plates, high-temperature zone cover plates, brake discs, etc. SiC/SiC has been practically applied and mass-produced in aviation engine stationary parts in developed countries such as Europe and America, including various models of military/civil aviation engines such as M53-2, M88, M88-2, F100, F119, EJ200, F414, F110, F136, etc.

The exhaust nozzle of an engine is usually an exposed component of an aircraft, which not only has a significant impact on the backscatter cross-section of the aircraft, but also is one of the important infrared radiation sources of the aircraft. SiC/SiC absorbing materials not only have excellent mechanical properties, oxidation resistance, and longer high-temperature service life, but also have good absorbing performance, meeting the stealth requirements of high-temperature parts of weapons and equipment such as hypersonic aircraft surfaces, engine exhaust nozzles, and cruise missile nose tips. They have broad application prospects.