Overview and application of silicon nitride

What is silicon nitride?

Silicon nitride is an inorganic substance with the chemical formula Si 3 N 4. 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 its excellent electrical, thermal and mechanical properties, silicon nitride is widely used in ultra-high temperature gas turbines, aircraft engines, electric furnaces, etc.

Silicon nitride Si3N4 powder price

The price of silicon nitride Si3N4 powder will vary randomly with changes in production costs, transportation costs, international conditions, exchange rates and the supply and demand of silicon nitride Si3N4 powder. Tanji New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for silicon nitride Si3N4 powder, please feel free to send an inquiry to get the latest price of silicon nitride Si3N4 powder.

Silicon Nitride Si3N4 Powder Supplier

As a global silicon nitride Si3N4 powder supplier, Tanji New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium nitride, silicon nitride, titanium nitride, etc.) high-purity targets, functional ceramics and structural devices, and provides OEM services.

Specification of Silicon Nitride Si3N4 Powder
Product Name:Silicon Nitride
Purity:99%
Particle Size:0.5um-1um (α phase)

Chemical Composition of Silicon Nitride Si3N4 Powder:

Si3N4	N	O	C	Fe	Al	Ni	Zn
＞99%	＞38.9%	0.6-1.2	＜0.2	＜120ppm	＜3ppm	＜1ppm	＜1ppm