Why is silicon nitride one of the hardest materials in the world?
Views : 120
Author : Lzh
Update time : 2023-02-02 16:06:25
What is silicon nitride? Silicon nitride can resist the impact of cold and heat. It can be heated to more than 1000 ℃ in the air and will not be broken after sharp cooling and heating. Because silicon nitride ceramics have such excellent characteristics, people often use them to manufacture mechanical components such as bearings, turbine blades, mechanical seal rings, permanent moulds, etc. Suppose silicon nitride ceramics that are high temperature resistant and not easy to heat transfer are used to manufacture the heating surfaces of engine components. In that case, it can improve the quality of engines, but This kind of engine has also been developed in China, the United States, Japan and other countries.
Application of silicon nitride Silicon nitride can be used as a bonding material and modified with different ratios because it can form strong bonding with silicon carbide, aluminium oxide, thorium dioxide, boron nitride, etc. In addition, silicon nitride can also be used in solar cells. After coating the silicon nitride film with the PECVD method, it can not only be used as an antireflection film to reduce the reflection of incident light but also the hydrogen atom of the reaction product enters the silicon nitride film and silicon wafer during the deposition of a silicon nitride film, It plays a role in passivating defects. The atomic number ratio of silicon nitride to silicon nitride here is not strictly 4:3 but fluctuates within a certain range according to different process conditions. The physical properties of films corresponding to different atomic proportions are different. They are used for ultra-high temperature gas turbines, aircraft engines, electric furnaces, etc.
Material Properties of Silicon Nitride Burning the silicon dioxide and carbon mixture in nitrogen-containing a small amount of hydrogen, The ammonolysis product Si (NH2) 4 of SiCl4 is completely thermally decomposed. Silicon nitride can be used as a catalyst carrier, high-temperature resistant material, coating and abrasive. Silicon nitride ceramics have the characteristics of high strength and high-temperature resistance. Among ceramic materials, it has the best comprehensive mechanical properties, heat shock resistance, oxidation resistance, wear resistance and corrosion resistance. It is the first candidate material for ceramics used for thermal engine parts. In the mechanical industry, silicon nitride ceramics are used as bearing balls, rollers, ball races, Tools and dies, new ceramic tools, pump plungers, spindle sealing materials, etc. In the chemical industry, silicon nitride ceramics are used as wear-resistant and corrosion-resistant parts, such as ball valves, pump bodies, combustion vaporizers, filters, etc. In the gold industry, silicon nitride ceramics have high-temperature resistance, low friction coefficient and self-lubricating properties. For most metals, alloy solution is stable. Therefore, tools and dies for metal material processing can be made, such as pulling mandrel, extrusion, wire pulling die, roller, transfer roller, heating body clamp, thermocouple sleeve, metal heat treatment support, the crucible, aluminium liquid guide, aluminium clad lining, etc.
Price of silicon nitride Silicon nitride particle size and purity will affect the product's price, and the purchase volume can also affect the cost of silicon nitride. A large amount of large amount will be lower. The price of silicon nitride can be found on our company's official website.
Silicon nitride supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including silicon nitride, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective silicon nitride, you are welcome tocontact us or inquire any time.
