Performance Characteristics And Applications of Silicon Nitride Ceramics
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Update time : 2020-10-19 15:25:58
The characteristics of silicon nitride ceramics:
Silicon nitride ceramics is a synthetic superhard material. It has good lubricating properties and high hardness, especially high temperature hardness, so it has outstanding high temperature wear resistance and has the characteristics of corrosion resistance and high temperature oxidation resistance.
Compared with other industrial ceramics, silicon nitride resistance to thermal shock is also a representative feature. It is heated to over 1000°C in the air, cooled quickly, and then quickly heated without splitting. It is because of its good thermal shock resistance that it is often used to manufacture high-temperature mechanical parts, such as bearings, turbine blade mechanical seal rings, welding molds, etc.
Silicon nitride ceramics also have excellent mechanical properties and workability. The fracture toughness of common silicon nitride ceramics is between 600-800Mpa, and the hardness is lower than that of diamond. Its processing is usually based on the different processing technology, using diamond grinding wheels, grinding heads, etc. for precision grinding, cutting, drilling and so on.
The applications of silicon nitride ceramics:
As an excellent high temperature engineering material, Si3N4 ceramic material can give full play to its advantages in its application in the high temperature field.
The future development direction of Si3N4 is: (1) Make full use of the excellent characteristics of Si3N4 itself; (2) When Si3N4 powder is sintered, develop some new fluxes, research and control the best components of existing fluxes; (3) Improve powder making , Forming and sintering process; (4) Develop the compounding of Si3N4 and SiC and other materials in order to prepare more high-performance composite materials.
The application of Si3N4 ceramics in automobile engines has created a new situation for the development of new high-temperature structural materials. The automobile industry itself is a multidisciplinary industry that integrates the great achievements of various technologies. China is an ancient civilization with a long history. It has made brilliant achievements in the history of ceramics development. With the process of reform and opening up, one day, China will also It is bound to be among the world's major auto industry countries and create greater glories for the development of ceramics.
Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professionalsilicon nitride with over 12 years experience in chemical products research and development. If you are looking for high quality silicon nitride, please feel free to contact us and send an inquiry.
