What are the uses and functions of silicon nitride ceramics, and what are the properties of silicon nitride?

Silicon nitride ceramics have seven main characteristics: heat resistance, thermal shock resistance, self-lubrication, corrosion resistance, wear resistance, low specific gravity, and 

high brittleness. Except for the seventh characteristic, which is a drawback, the other characteristics have enabled them to play a significant role in the aerospace field. Furthermore, 

the drawback of high brittleness can be addressed through continuous fiber toughening.

What are the uses and functions of silicon nitride ceramics, and what are the properties of silicon nitride?

The aerospace field is highly concentrated with advanced technologies and materials, and silicon nitride ceramics, as one of the most outstanding polymer materials, are bound to 

find applications. For example, aircraft turbine engines operate at temperatures exceeding 650°C, requiring the use of high-strength alloy materials. The combustion zone 

reaches even higher temperatures, exceeding 1800°C, necessitating the use of high-heat-resistant ceramic materials like silicon nitride. Furthermore, silicon nitride ceramics 

offer higher strength, and their brittleness can be mitigated through continuous fiber toughening.

In summary, the excellent properties of silicon nitride ceramics have led to their widespread application in various high-tech fields, and their performance in these areas truly 

reflects the superior properties of silicon nitride ceramic materials.