Ceramic materials have excellent properties such as high temperature resistance, low density, high specific strength, high specific modulus, oxidation resistance and ablation resistance, which makes them have the potential to replace metals as a new generation of high-temperature structural materials.
Based on Al2O3 fiber, ceramic matrix composite materials can be used for supersonic jet nozzles and rocket engine gaskets.

Ceramics have many characteristics that make them very popular in aerospace applications. What is important is light weight, high temperature resistance, electrical insulation, high energy ablation, corrosion resistance, chemical stability, wear resistance and vibration resistance.

Electrical applications
Advanced ceramics support the electronics industry, and ordinary airplanes are filled with electronic products. Gradually, these electronic components, such as sensors, antennas, capacitors, and resistors, have become smaller and more powerful. Therefore, this is a major development area for advanced ceramics.

Structural applications
Structural ceramics (crystalline inorganic non-metals) are used as thermal barrier coatings for engine thermal components in aerospace. In addition, these materials are being used as reinforcing materials and/or matrices in composites, such as ceramic matrix composites. Lightweight and toughness are often the main driving forces for the use of ceramic composite materials.

Ceramics are lighter than most metals and are stable at temperatures higher than high-grade industrial plastics. Because of these and other characteristics, structural ceramic applications include thermal protection systems for rocket exhaust cones, insulation tiles for space shuttles, missile nose cones, and engine components.

Turbine application
In the past 30-40 years, technical ceramics have been used in various parts of engines, but a large number of activities currently revolve around the development of silicon carbide (silicon carbide/silicon carbide composite) for jet engine turbines, mainly Focus on the turbine blades. The main driving force is fuel efficiency, as engineers seek to run jet engines without the need for cooling channels, which currently prevent metal alloy blades from melting. If the blades are made of ceramic composite materials, they can handle temperatures of 1500-1600 degrees Celsius, and the engine can run at higher temperatures. As a result, energy efficiency will increase, which will result in reduced fuel and the aircraft can fly farther or more efficiently.