Application and Market Analysis of Silicon Nitride Ceramics
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Update time : 2022-10-14 17:10:38
Silicon Nitride Powder Property
Silicon nitride (Si3N4) is a covalent bond compound composed of silicon and nitrogen. It was discovered in 1857 and was mass-produced as a ceramic material in 1955. Silicon nitride ceramics have many advantages that metal materials and polymer materials do not have, such as high temperature resistance (bending strength above 350MPa at 1200 ℃), acid and alkali corrosion resistance, self-lubrication and so on. Silicon nitride ceramics are widely used in aerospace, national defense and mechanical fields.
Preparation Method of Silicon Nitride Ceramics
The preparation of silicon nitride ceramic material first needs to obtain silicon nitride powder, and then through molding, sintering and other processes, the needed silicon nitride ceramic is finally obtained. the main preparation methods of the powder include silicon powder nitriding method, liquid phase reaction method and self-propagating high temperature synthesis method.
The main forming processes of silicon nitride ceramics are dry pressing, cold isostatic pressing and tape casting, and the main sintering processes are hot pressing sintering, air pressure sintering, hot isostatic pressing sintering, spark plasma sintering and so on.
Silicon Nitride Ceramics Application in Mechanical Industry
Silicon nitride ceramics are mainly used as valves, pipes, grading wheels and ceramic tools in the mechanical industry, and the most widely used is silicon nitride ceramic bearing balls.
The speed of silicon nitride bearing ball is as high as 600000 revolutions per minute in use, which is mainly used in precision machine tool spindle, motorized spindle high-speed bearings, aerospace engines, automotive engine bearings and other equipment bearings.
Compared with steel ball, silicon nitride ceramic bearing ball has outstanding advantages: low density, high temperature resistance, self-lubrication and corrosion resistance. As a high-speed rotating body, the ceramic ball produces centrifugal stress, and the low density of silicon nitride reduces the centrifugal stress on the high-speed rotating outer ring.
Dense Si3N4 ceramics also exhibit high fracture toughness, high modulus and self-lubricity, which can resist a variety of wear and withstand harsh environments that may lead to cracks, deformation or collapse of other ceramic materials, including extreme temperature, large temperature difference and ultra-high vacuum. Silicon nitride bearings are expected to be widely used in various industries.
Silicon Nitride Market Analysis
The production of high-end silicon nitride ceramic products is still dominated by Japanese, European and American enterprises. The international market share and the leading force of development direction are still controlled by well-known foreign enterprises. Japanese Kyocera, Toshibx Seridan, CoorsTek and British Sailon are the most representative.
According to the global market research firm MARKETSANDMARKETS, the global market size of silicon nitride will grow at a compound annual growth rate of 5.8% during the analysis period (2020-2027). From $1.4 million in 2020, it is expected to reach $149 million by 2027.
Si3N4 Powder Price
The price is influenced by many factors including the supply and demand in the market, industry trends, economic activity, market sentiment, and unexpected events. If you are looking for the latest Si3N4 powder price, you can send us your inquiry for a quote. ([email protected])
Si3N4 Powder Supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted Si3N4 powder manufacturer and Si3N4 powder supplier with over 12-year-experience. We ship our goods all over the world.
If you are looking for high-quality silicon nitride powder, please feel free to contact us and send an inquiry. ([email protected])
