Overview of silicon nitrideSi3N4 powder:
Silicon nitride Si3N4 powder is an inorganic substance with a chemical formula of Si3N4.Si3N4 is an important structural ceramic material with high hardness,inherent lubricity,wear resistance, atomic crystals,and oxidation resistance at high temperatures.
Silicon nitride is a compound of silicon and nitrogen. Si3N4 is the most thermodynamically stable in silicon nitride. It is a white, high melting solid, relatively chemically inert, attacked by dilute HF and hot H2SO4. It works very hard (MoHS is 8.5) and has high thermal stability.
Silicon nitride is an inorganic substance with the chemical formula Si3N4. It is an important structural ceramic material with high hardness, lubricity and wear resistance, and is an atomic crystal; it is resistant to oxidation at high temperatures. And it resists the effects of cold and cold, heats into the air to 1000°C or more, then cools sharply and then heats, it won't break. It is because of the excellent properties of silicon nitride ceramics that they are often used to manufacture mechanical components such as bearings, air turbine blades, mechanical seals, permanent molds, etc. If silicon nitride ceramics are resistant to high temperature and difficult to transfer, the heat absorption surface of engine components can be improved, which not only has good quality, but also saves fuel and improves thermal efficiency.
Application of silicon nitrideSi3N4 powder:
What are the applicable scopes of silicon nitride Si3N4 powder?
1)Manufacturing structural devices: metallurgy,machinery,aviation,aerospace,etc.
2)Surface treatment of metals and other materials:such as molds,cutting tools,turbine blades.
3)Composite materials:such as metal,ceramic and graphite composite materials,rubber,plastics.
4)Colorless and transparent self-lubricating wear-resistant nanoparticle film,used for advanced surface protection such as mobile phones and automobiles.
6)Ball valve and parts.
7)Corrosion resistant turbine.
Other applications of silicon nitride Si3N4 powder:
Silicon nitride Si3N4 powder is used as a high-grade refractory material. For example,SI3N4-SIC refractories are used in blast furnace body and other parts in cooperation with sic,and SI3N4-BN materials are used in combination with BN for horizontal continuous casting separation rings.The continuous casting separation ring is a fine-structure ceramic material with uniform structure and high mechanical strength.Si3N4 has good thermal shock resistance and will not be wetted by molten steel,which meets the process requirements of continuous casting
Silicon nitride Si3N4 powder ceramic materials have excellent properties such as high thermal stability,strong oxidation resistance and high product size accuracy.Since silicon nitride is a covalent compound with high bond strength,and can form an oxide protective film in the air,Si3N4 is also It has good chemical stability.It will not be oxidized below 1200℃.The protective film formed at 1200~1600℃ can prevent further oxidation and will not be infiltrated by many molten metals or alloys such as aluminum,lead,tin,silver,brass,and nickel.Or corrosion,but Si3N4 can be corroded by molten magnesium,nickel-chromium alloy,stainless steel and other melts.
Silicon nitride Si3N4 powder ceramic materials can be used for high-temperature engineering parts,advanced refractories in the metallurgical industry,corrosion-resistant parts and sealing parts in the chemical industry, tools and cutting tools in the machining industry,etc.Because of silicon nitride and silicon carbide,alumina ,Thorium dioxide, boron nitride,etc.can form a strong bond,so Si3N4 can be used as a bonding material and 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,Si3N4 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 reaction The hydrogen atoms of the product enter the silicon nitride film and the silicon wafer to passivate defects.The ratio of the number of silicon nitride to silicon atoms here is not strictly 4:3,but is in a certain range depending on the process conditions.Internal fluctuation,the physical properties of the film corresponding to different atomic ratios are different.
Used in ultra-high temperature gas turbines,aircraft engines,electric furnaces,etc.
The price of silicon nitrideSi3N4 powder:
The price of silicon nitride Si3N4 powder will vary randomly with the production cost, transportation cost, international situation, exchange rate and supply and demand of silicon nitride Si3N4 powder market. Tanki 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.
Suppliers of silicon nitride Si3N4 powder:
As a global silicon nitride Si3N4 powder supplier, 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.
Specification of Silicon Nitride Si3N4 Powder:
Product Name:Silicon Nitride
Particle Size:0.5um-1um (α phase)
Chemical Composition of Silicon Nitride Si3N4 Powder:
|Silicon Nitride Properties|
|Other Names||silicon (IV) nitride, a-Si3N4, SiN, trisilicon tetranitride, Si3N4 powder|
|Appearance||White to Gray Powder|
|Melting Point||1900 °C|
|Solubility in H2O||Insoluble|
|Electrical Resistivity||11 to 12 10x Ω-m|
|Specific Heat||720 to 800 J/kg-K|
|Poisson's Ratio||0.24 to 0.27|
|Thermal Conductivity||12 to 31 W/m-K|
|Thermal Expansion||2.5 to 3.2 µm/m-K|
|Young's Modulus||140 to 310 GPa|
|Exact Mass||139.943 g/mol|
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