What is the role of Silicon Nitride? Silicon nitride is a high-temperature refractory compound with no melting point, strong high temperature creeps resistance, and no binder reaction sintering silicon nitride load softening point is more than 1800℃ and can be used as an advanced refractory material. Silicon nitride ceramic materials have high thermal stability, strong oxidation resistance, and high accuracy of product size. Because silicon nitride is a covalent compound with the high bond strength and can form an oxide protective film in the air, it also has good chemical stability; below 1200℃ is not oxidized, 1200~1600℃ formation of protective film can prevent further oxidation and is not by aluminum, lead, tin, silver, brass, nickel and many other molten metals or alloys infiltration or corrosion. Still, it can be corrupted by magnesium, nickel-chromium alloy, stainless steel, and other melt. Silicon nitride ceramic materials can be used in high-temperature engineering components, the metallurgical industry, and other aspects of advanced refractory materials, corrosion-resistant parts and sealing parts in the chemical industry, machining industry cutting tools and blade tools, etc. Because silicon nitride and silicon carbide, alumina, thorium dioxide, and boron nitride can form a strong combination, they can be used as a binding material, modified with different ratios. In addition, silicon nitride can also be used in solar cells. After coating the silicon nitride film by the PECVD method, it can not only reduce the reflection of the incident light but also, in the deposition process of the silicon nitride film, the reaction product hydrogen atoms enter the silicon nitride film and the silicon wafer, playing the role of passivation defects. The number ratio of silicon nitrogen atoms here is not strictly 4:3 but fluctuates within a certain range according to the different process conditions, and the physical properties of the films corresponding to the different atomic ratios are different. Used for ultra-high temperature gas turbines, aircraft engines, electric furnaces, etc
What are the material properties of silicon nitride? Silicon nitride is very strong, especially hot-pressed silicon nitride, one of the world's hardest substances. It is extremely resistant to high temperatures, and the strength can be maintained at 1200℃ without decline. Heat will not melt into the melt until 1900℃, will decompose, can withstand almost all inorganic acids and less than 30% caustic soda solution, but also can withstand a lot of organic acid corrosion; it is also a high-performance electrical insulating material. Silicon nitride hardly interacts with water; slow hydrolysis in concentrated strong acid solution to produce ammonium salt and silica; easily soluble in hydrofluoric acid, not working with dilute acid. The concentrated strong alkali solution can slowly corrode silicon nitride, and the molten strong alkali solution can quickly convert silicon nitride to silicate and ammonia. Silicon nitride above 600℃ can reduce the transition metal oxide, lead oxide, zinc oxide, and tin dioxide and release nitrogen oxide. Burning a mixture of silica and carbon in nitrogen-containing a small amount of hydrogen, Silicon nitride can be used as a catalyst carrier, high-temperature resistant materials, coating and abrasive, etc. Silicon nitride ceramics has the characteristics of high strength and high-temperature resistance. In ceramic materials, its comprehensive mechanical properties are the best, heat and shock resistance, oxidation resistance, wear resistance, and corrosion resistance, and it is the first candidate material for ceramics for heat engine components.
The price of Silicon Nitride The different price of Silicon Nitridepurity is also different. The market price of Silicon Nitrideis in the process of dynamic change. If you need it, you can ask us at any time.
Silicon Nitride supplier TRUNNANO (aka. Luoyang Tongrun Nano Technology Co., Ltd.) is a reputable global chemical material supplier and manufacturer with 12 years of experience providing high-quality chemical materials and manufacturing processes. Currently, our company has successfully developed a series of powder materials. OEM service is available. If you are looking for Silicon Nitride, please contact us or click on the needed products to send us an inquiry.
