Silicon Nitride (Si3N4) is an important structural ceramic material

Overview of Silicon Nitride Si3N4 Powder

Silicon nitride powder is an inorganic substance with the chemical formula Si3N4. It is an important structural ceramic material with high hardness, inherent lubricity, wear resistance, atomic crystallinity, and oxidation resistance at high temperatures. Used as high-grade refractory material.

Silicon nitride is a chemical compound of the elements silicon and nitrogen. Si3N4 is the most thermodynamically stable and commercially important of the silicon nitrides, and the term "silicon nitride" commonly refers to this specific composition. It is a white, high-melting-point solid that is relatively chemically inert, being attacked by dilute HF and hot H2SO.It is very hard (8.5 on the mohs scale). It has a high thermal stability with strong optical nonlinearities for all-optical applications.

Application of Silicon Nitride Si3N4 Powder

Silicon nitride Si3N4 powder is used as high-grade refractory material. For example, SI3N4-SIC refractory material and sic are used in blast furnace body and other parts, and SI3N4-BN material is used in combination with BN for horizontal continuous casting separation ring. The continuous casting separation ring is a fine-structure ceramic material with uniform structure, high mechanical strength, good thermal shock resistance, and will not be wetted by molten steel, which meets the requirements of continuous casting technology.

Silicon nitride Si3N4 powder ceramic material has excellent properties of high thermal stability, strong oxidation resistance, and high product dimensional accuracy. Since silicon nitride is a covalent compound with high bonding strength, it can form an oxide protective film in the air, and also has good chemical stability, and will not be oxidized below 1200 °C. The protective film formed at 1200~1600°C prevents further oxidation and will not be penetrated by many molten metals or alloys such as aluminum, lead, tin, silver, brass, and nickel. or corrosion, but it will be corroded by molten magnesium, nichrome, stainless steel and other melts.

1) Manufacturing structural devices: metallurgy, machinery, aviation, aerospace, etc.

2) Surface treatment of metals and other materials: such as molds, tools, turbine blades.

3) Composite materials: such as metal, ceramic and graphite composite materials, rubber, plastics.

4) Colorless, transparent, self-lubricating and wear-resistant nanoparticle film for advanced surface protection such as mobile phones and automobiles.

5) Ball bearings.

6) Ball valve and parts.

7) Corrosion resistant turbine.

Silicon nitride Si3N4 powder ceramic materials can be used in high temperature engineering parts, advanced refractory materials in metallurgical industry, corrosion-resistant parts and seals in chemical industry, tools and cutting tools in machining industry, etc. Because silicon nitride can form strong bonds with silicon carbide, aluminum oxide, thorium dioxide, boron nitride, etc., it can be used as a bonding material for modification in different proportions.

In addition, silicon nitride can also be used in solar cells. After the silicon nitride film is coated by the PECVD method, it can not only be used as an anti-reflection film to reduce the reflection of incident light, but also in the deposition process of the silicon nitride film, the hydrogen atoms of the reaction product enter the silicon nitride film and the silicon wafer, passivation Defects. Here, the ratio of the number of silicon nitride to silicon atoms is not strictly 4:3, but depends on the process conditions within a certain range. Internal fluctuations, the physical properties of the films corresponding to different atomic ratios are different. Used in ultra-high temperature gas turbines, aircraft engines, electric furnaces, etc.

The price of silicon nitride Si3N4 powder

The price of silicon nitride Si3N4 powder will change randomly with the production cost, transportation cost, international situation, exchange rate and the supply and demand of the silicon nitride Si3N4 powder market. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range 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 supplier of silicon nitride Si3N4 powder, Tanki 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.

Chemical Composition of Silicon Nitride Si3N4 Powder