Silicon Nitride Ceramic
Silicon Nitride Ceramics, Si3N4 Ceramics
Silicon nitride ceramic products have excellent physical properties and chemical stability and are widely used in many fields. Compared with other ceramics, silicon nitride ceramics have excellent mechanical strength and wear resistance, high heat resistance, good thermal shock resistance, and can maintain strength at 1200°C without loss. The thermal shock stability coefficient is as high as 500°C. The unique performance combination of silicon nitride makes it widely used in high temperature, high pressure, and harsh environments. It has amazing chemical resistance. Except for hydrofluoric acid, it does not react with other inorganic acids, has strong corrosion resistance, and is resistant to oxidation at high temperatures.
The preparation industry of Si3N4 ceramics mainly includes reaction sintering, hot pressing sintering, pressureless sintering, gas pressure sintering, and other methods. Due to different preparation processes, the microstructure of each silicon nitride ceramic (such as porosity and pore morphology, grain morphology, intercrystalline morphology, intercrystalline second phase content, etc.) is also different, so the performance is also different. Gas pressure sintering is currently the most popular method.
Main Applications
– Wear-resistant parts such as bearings, turbine blades, mechanical seal rings, permanent molds, high-speed cutting tools, etc.
– Semiconductor equipment parts, electronic products such as power modules for electric vehicles
-High-temperature components, thermocouples protecting tubes, nozzle and covers, furnace parts.
Available products
-Plate, Sheets, Tube, Rod, thermocouples protecting tubes, substrate
-Bearings, bearing balls, seal rings, forming roller, electrical insulator, crucibles, and other customized parts
