What is silicon nitride?Overview and application of silicon nitride

What is silicon nitride?

 Silicon nitride  is an inorganic substance with the chemical formula Si3N4. It is an important structural ceramic material with high hardness, inherent lubricity, wear resistance and atomic crystals. It has oxidation resistance at high temperatures. Moreover, it can resist the influence of heat and cold. If it is heated to above 1000°C in the air, quickly cooled and then quickly heated, it will not break. It is precisely because of the excellent characteristics of silicon nitride ceramics that people often use it to manufacture bearings, turbine blades, mechanical seal rings, permanent molds and other mechanical parts. If silicon nitride ceramics, which are resistant to high temperatures and difficult to transfer heat, are used to make the heating surface of engine parts, it will not only improve the quality of the engine, but also

 Overview of Silicon Nitride

Silicon nitride is an inorganic substance with a chemical formula of Si3N4. It is an important structural ceramic material with high hardness, inherent lubricity, wear resistance, atomic crystals and high temperature oxidation resistance.

Application of silicon nitride

 Silicon nitride ceramic materials have excellent properties, such as high thermal stability, strong oxidation resistance and high product dimensional accuracy. Since silicon nitride is a covalent compound with high bonding strength and can form an oxide protective film in the air, it also has good chemical stability. It will not be oxidized below 1200°C. Forming a protective film at a temperature of 1200~1600°C can further prevent it from being oxidized, and will not be penetrated or corroded by many molten metals or alloys (such as aluminum, lead, tin, silver, brass, nickel, etc.), but it can Corroded by molten magnesium, nickel-chromium alloys, stainless steel, etc.

Silicon nitride ceramic materials can be used for high-temperature engineering parts, advanced refractory materials in the metallurgical industry, corrosion-resistant parts and sealing parts in the chemical industry, tools and cutting tools in the machining industry, etc.

. Since silicon nitride can form a strong bond with silicon carbide, aluminum oxide, th oxide, boron nitride, etc., it can be used as a bonding material modified in different proportions.

In addition, silicon nitride can also be applied to solar cells. After the silicon nitride film is plated by the PECVD method, it can not only be used as an anti-reflection film to reduce the reflection of incident light, but also hydrogen atoms that can react during the deposition of the silicon nitride film. The product enters the silicon nitride film and silicon wafer to passivate defects. The ratio of the number of silicon nitride to silicon atoms is not strictly 4:3, but fluctuates within a certain range according to different process conditions. The physical properties of the films corresponding to different atomic ratios are different.

Due to the excellent properties of silicon nitride in terms of electrical, thermal and mechanical properties, it is widely used in ultra-high temperature gas turbines, aircraft engines, electric furnaces, etc.

The price of silicon nitride

The price of silicon nitride will vary randomly with production costs, transportation costs, international conditions, and market supply and demand of silicon nitride. TankiNew Materials Co. Ltd aims to help all industries and chemical wholesalers find high-quality products by providing a full range of products. Tailor-made services, low-priced nanomaterials and chemicals. If you are looking for silicon nitride, please feel free to send an inquiry to get the latest price.

Silicon Nitride Supplier

As a global silicon nitride supplier, Tanki New Materials Co. Ltd has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. A series of powder materials (titanium nitride, silicon nitride, titanium nitride, etc.) high-purity targets, functional ceramics and structural devices, and provide OEM services.

Chemical Composition of Silicon Nitride Si3N4 Powder