The purity of silicon nitride powder is high and it has good chemical stability, high thermal conductivity, low thermal expansion coefficient. It is the good wear resistance material which is widely used in the production of polysilicon ingot in solar energy industry. The indicator is as following: phase,90%N,38.5%O,1.8%Fe,20 ppm, Al,10 ppm, Ca,10 ppm,P,4 ppm, B,3 ppm and so on.
silicon nitride ceramics Silicon nitride ceramic is an inorganic material ceramic that does not shrink during sintering. The strength of silicon nitride is very high, especially hot-pressed silicon nitride, which is one of the hardest substances in the world. It has high strength, low density, high temperature resistance and other properties. High temperature resistance, the strength can be maintained to a high temperature of 1200 without decreasing, and will not melt into a molten body after being heated, and will not decompose until 1900 It has amazing chemical corrosion resistance, and can withstand almost all inorganic acids and less than 30% caustic soda solution, as well as many organic acids; It is also a high-performance electrical insulating material. Si3N4 can be used to manufacture ball bearings by virtue of its light weight and high rigidity. It has higher accuracy than metal bearings, generates less heat, and can operate in higher temperatures and corrosive media. The steam nozzle made of S ceramic has wear resistance, heat resistance and other characteristics, and it will not be obviously damaged after being used in 650 boiler for several months.
Silicon Metal 441 (Powder)
ferro silicon nitride powder is applicable to stainless steel smelting, special alloy steel smelting, oriented silicon steel smelting and other casting industries. As a new type of refractory material, it is applied in the metallurgical field, such as metallurgical furnace body, furnace mouth seal, ironmaking furnace outlet, iron hook amorphous material and nitrogen additive in the steelmaking industry. Silicon nitride material can be used as abrasive material for abrasive tool manufacturing, and can also be used in chemical fields such as acid resistance, alkali resistance and corrosion resistance. In terms of steelmaking, granular ferro silicon nitride is mainly used in the production of oriented silicon steel at the initial stage, and it can stably supplement a certain amount of nitrogen for molten steel. Items Fe-Si3N4 chemical component(%) Si3N4 70-80 N 25-31 Si 45-52 Fe
aluminium nitride ceramics The color of high thermal conductivity aluminum nitride ceramic sheet is gray white, and the surface is smooth. It can be made into any shape or size for easy use and installation. Aluminum nitride ceramic heat sink has a very high thermal conductivity, which is 7-10 times higher than that of aluminum oxide ceramic, and can reach 180W. Its electrical insulation performance is quite stable, its dielectric constant and dielectric loss are low, and it can withstand the ultra-high temperature of 1800 degrees Celsius without affecting the working performance of the product With the rapid development of electronic equipment, the demand for electronic or auxiliary products is also increasing, and the application rate of high thermal conductivity aluminum nitride ceramic heat sink as a matrix or packaging material is also increasing in the market.
Ferro Silicon (FeSi)
Silicon metal #3303 Si:99.0%min. Fe:0.3%max. Al:0.3%max. Ca:0.03%max. Size:10-100mm,90%min. In plastic woven bags of 1 mt each. Ferro silicon, ferro silicon powder, ferro silicon briquette.
Fineway offers high quality ultra fine silicon nitride powder, the average particle size ranges from submicron order to coarse grain powder. With the high Purity and α phase crystal content, our powder can be widely used in solar and ceramic structural applications.
Si3N4 Ceramic Substrate Manufacturer,Silicon Nitride Ceramic For IGBT,Power Module Substrates,LED Substrate Product Description Silicon Nitrides (Si3N4) Feature An Excellent Combination Of Material Properties. They Are Nearly As Light As Silicon Carbide (SiC), But Their Microstructure Gives Them Excellent Thermal Shock Resistance And Their High Fracture Toughness Makes Them Resistant To Impacts And Shocks. Properties Of Silicon Nitride (Si3N4) Very Low Density (3.21 G/Cm3) Very High Fracture Toughness (7 MPam1/2) Good Flexural Strength (850 MPa) Very Good Thermal Shock Resistance: High Thermal Stress Parameters (569 K) Maximum Operating Temperature In An Oxidizing Atmosphere: 1,300°C Maximum Operating Temperature In A Neutral Atmosphere: 1,600°C Feature High Strength (High Reliability) Similar To The Thermal Expansion Coefficient Of Semiconductors Such As Si, SiC, And GaN High Dielectric Strength High Bending Strength Main Use Of Precision Ceramics For Electronics (Si3N4=Silicon Nitride) Power Module Substrates LED Substrates Submount For Optical Pick-Up Heat Dissipation Substrates The porous silicon nitride ceramic material combines the excellent properties of both the silicon nitride ceramic and the porous ceramic and is a ceramic material having a communicating or closed pore in the body. Porous silicon nitride ceramics have been widely used in aerospace and environmental chemicals due to their special structure and properties, such as low density, high porosity, moderate dielectric properties, high specific surface area, high hardness, and high fracture toughness. Important fields such as biomedicine, national defense, and military.
