Introduction to Silicon Nitride si3N4 Powder
Silicon nitride
This is an inorganic compound, with the chemical formula Si3N4. The relative molecular mass of this substance is 140.28. Gray, off-white, or white.
The Physical and Chemical Properties of Silicon Nitride Powder Si3N4
Si3N4 has high-temperature insoluble properties. It exhibits high-temperature creep resistance. Hexagonal system. Crystals are hexagonal. The Si3N4 density obtained using the reaction sintering process is 1.8-2.7% g/cm3, while the Si3N4 density obtained via hot-pressing is 3.12-3.22g/cm3. Mohs hardness (99.5), Vickers hardness (2200) and microhardness (32220MPa) are all 99.5. The melting point of the metal is 1900 when it is under pressure. It typically decomposes around 1900 at atmospheric pressure. Specific heat capacity is 0.71J/g*K. The heat of forming is -751.57kJ/mol. The thermal conductivity of the material is (2-155) W/(m*K). The linear expansion coefficient is 2.8~3.2×10-6/(20~1000).
Insoluble in water. Insoluble in water. The temperature at which oxygenation starts in the air is 13001400. The specific volume resistance of the air is 1.4×105 *m for 20 and 4×108*m for 500. The elastic modulus measures 2842046060MPa. Reaction sintering results in a compressive strength 490MPa. It reacts with dicalcium dialyzide at 1285 to form calcium diazide. 600 reduces the amount of transition metal and releases nitrogen oxides. The bending strength of the silicon halide is 147 MPa. It can be made by heating silica powder in nitrogen, or reacting with ammonia to make silicon halide. The resistance is between 1015-1016O.cm. It can be used in high-temperature ceramic materials.
Other than hydrofluoric acid or hot phosphoric acid silicon nitride doesn’t react with any inorganic acids. It also has strong corrosion resistance.
| Silicon Nitride Si3N4 Powder Properties | |
| Other names | silicon (IV), nitride |
| CAS No. | 12033-89-5 |
| Formula compound | Si3N4 |
| Molecular Weight | 140.28 |
| Appearance | From white powder to gray powder |
| Melting Point | 1900degC |
| Boiling Point | N/A |
| Density | 2.2-3.5g/cm3 |
| Solubility of H2O | Insoluble |
| Exact Mass | 139.943 |
Silicon Nitride Si3N4 Pulverization
High thermal stability, high oxidation resistance and high dimensional accuracy are some of the benefits of silicon nitride clay material. The covalent compound silicon nitride has a high bond strength and will form an oxygen film in the atmosphere, which gives it excellent chemical stability. Silicon nitride can not be oxidized below 1200. A protective film can also be formed between 1200 and 1600 to stop further oxidation. Silicon nitride does not become infiltrated, or corroded from aluminum, lead or tin, silver or brass, or any other molten metals and alloys. However, it is susceptible to corrosion by magnesium and nickel-chromium alliance, as well as other molten liquids.
You can use Silicon Nitride ceramic materials in
high-temperature engineering components
,
Advanced refractory for the metallurgical sector
,
Corrosive-resistant components
Sealing components in the chemical, machining, and cutting industries.
Silicon nitride is a strong bond material that forms with silicon carbide (alumina), thorium oxide, boron and nitride, among others.
Additionally, silicon nitride may be used in
solar cells
. After the silicon-nitride nitride is plated with the PECVD process, it can be used to reduce incident light reflections. In the deposition process for a silicon Nitride film, the hydrogen atom from the reaction product enters silicon nitride wafer and silicon nitride movie, where it plays a role as a passivation problem. The ratio of silicon nitrogen atoms to silicon nitride is not strictly 4:3, but can fluctuate depending on different technological conditions. Different atomic proportions correspond to different physical characteristics of the film.
You can also use it in
Ultra-high temperatures gas turbines, aircraft engines and electric furnaces
, etc.
Main Supplier of Silicon Nitride Powder Si3N4
Technology Co. Ltd. is a trusted global supplier of chemical material and manufacturer. They have over 12 years experience in producing super high-quality chemicals, Nanomaterials, such as silicon powder.
High-quality products are what you want
Silica nitride Si3N4 granules
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