Recently, the Russian President hosted a meeting with oil and gas industry representatives. He said that the refusal of some Western countries to cooperate normally with Russia and deny some Russian energy resources has hit millions of European people deeply and caused an energy crisis. These "unfriendly countries" are experiencing severe inflation, and Russia is also facing the three major challenges of increasing domestic consumption of energy Silicon Nitride powder are still very uncertain.
Introduction to Silicon Nitride Si3N4 Powder
Silicon nitride or Si3N4 is a kind of white powdery crystal; The melting point is 1900℃, and the density is 3.44g/cm3 (20℃). There are two variants: the α type which is a hexagonal dense packing structure, and the β type which is a crystalline structure. Silicon nitride is gray when it has impurities or excess silicon.
Physicochemical Properties of Silicon Nitride Si3N4 Powder
Silicon nitride hardly interacts with water. It slowly hydrolyzes to ammonium salt and silicon dioxide in a strong acid solution. Soluble in hydrofluoric acid, and does not act with dilute acid. A solution of strong alkali slowly corrodes the silicon nitride, and the molten strong alkali quickly converts the silicon nitride to silicates and ammonia. Above 600℃, Si3N4 can reduce transition metal oxides (see transition elements), lead oxide, zinc oxide, and stannic oxide, and release nitrogen oxide and nitrogen dioxide.
Silicon nitride is very strong, especially the hot-pressed silicon nitride. It is one of the hardest substances in the world. It is very high-temperature resistant, and it can maintain its strength at a high temperature of 1200℃. After heating, it will not melt into a melting body, until 1900℃ it will decompose. And it has amazing chemical corrosion resistance, almost all inorganic acid and 30% of the following caustic soda solution, also can withstand a lot of organic acid corrosion. It is also a kind of high-performance electrical insulation material.
|Silicon Nitride Si3N4 Powder Properties|
|Other Names||silicon (IV) nitride, α-Si3N4, SiN, trisilicon tetranitride, Si3N4 powder|
|Appearance||white to gray powder|
|Solubility in H2O||insoluble|
Applications of Silicon Nitride Si3N4 Powder
Silicon nitride is an important structural ceramic material with hardness, lubrication, and wear resistance. It is oxidation resistant at high temperatures. And it can also resist cold and hot shocks. Even though heated to more than 1000℃ in the air, through sharp cooling and then sharp heating, it will not break.
Because of such excellent characteristics, it is often used to manufacture bearings, turbine blades, mechanical seal rings, permanent molds, and other mechanical components. Using silicon nitride ceramic which is resistant to high temperature and not easy to heat transfer to manufacture the heating surface of engine parts can improve the quality of diesel engines, save fuel and improve the thermal efficiency.
In the mechanical industry, silicon nitride ceramics are used as bearing ball bearings, rollers, ball seat rings, molds, new ceramic cutting tools, pump plungers, spindle sealing materials, etc.
In the chemical industry, silicon nitride ceramics are used as wear and corrosion-resistant components, such as ball valves, pump bodies, combustion carburetors, filters, etc.
In the metallurgical industry, because of its properties of high-temperature resistance, small friction coefficient, and self-lubrication, and, for most metals, the alloy solution is stable, so silicon nitride ceramics can be used to make metal material processing die, such as dial core bar, extrusion, wire drawing die, roll, transfer roll, heating fixture, hot couple set camps, metal heat treatment support, crucibles, liquid aluminum guide camp, aluminum lining, etc.
Silicon nitride ceramic materials are also widely used in the electronics, military, and nuclear industries.
Main Supplier of Silicon Nitride Si3N4 Powder
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including silicon powder, nitride powder, graphite powder, zinc sulfide, calcium nitride, 3D printing powder, etc.
If you are looking for high-quality silicon nitride Si3N4 powder, please feel free to contact us and send an inquiry. ([email protected])
Due to the impact of COVID-19, russia-Ukraine conflict and international trade friction, the global economy is facing great challenges. Overseas trade is shrinking, supply chains are not smooth, oil prices are rising, freight rates are rising, and global trade and economic recovery are becoming more uncertain, which brings many risks and challenges to the company's business. The price of the Silicon Nitride powder can also be influenced by the above factors. To get the price of the latest Silicon Nitride powder, you are welcome to send email contact.
Fraport sees lower cargo volumes in 2022 as the ongoing war in Ukraine, restrictions in China and a slowing global economy continue to weigh on its performance. Cargo volu…
Human chorionic gonadotropin (hCG), produced primarily by differentiated syncytiotrophoblasts, is a key embryonic signal necessary for the maintenance of pregnancy. hCG can activate various signaling levels in multiple cell types through binding to l…
Weighing is very important in the livestock breeding process. The use of intelligent weighing can effectively pay attention to the daily weight gain, monthly weight gain and growth of cows, as well as the body loss of dairy cows. According to the wei…