Silicon nitride is then usually formed through a reaction
The basis of silicon nitride ceramics is silicon extracted from pure quartz sand (SiO2). Silicon nitride is then usually formed through a reaction of pure silicon with nitrogen at around 1,200 °C / 2,192 °F. Ceramic components made of silicon nitride are then produced using liquid-phase sintering from fine Silicon nitride powder, which is mixed with other sintering additives to enable complete compaction. The compaction and needle-shaped recrystallization of the silicon nitride particles is caused by sintering at high temperatures (1,800 to 1,900 °C / 3,272 - 1,652 °F) and under high pressure in a nitrogen atmosphere. This creates an interconnected structure, which gives the material its high degree of strength and f, fracture toughness, andlent resistance to temperature change. A wide range of component shapes can be achieved by using ceramic forming processes. Due to the toughness and hardness of the material, it’s usually only possible to process sintered components using diamond tools. In aerospace applications, good resistance and rigidity under high temperatures, as well as low weight and low thermal expansion, are particularly important – all of which are properties found in structural components made of Silicon nitride. This makes the ceramic of interest for, among other things, housings of reconnaissance and observation cameras and for support structures of satellites. The advantage here is that the low thermal expansion, even in the case of extreme temperature fluctuations such as those that occur in near-earth space, hardly causes any shifts within the high-precision optical lens system. This means the resolution and imaging accuracy of the camera can be significantly improved. Silicon nitride has good resistance to almost all acids (except hydrofluoric acid) and alkalis. It’s also resistant to oxidation and corrosion at high temperatures, e.g., against liquid non-ferrous metal melts such as aluminum. This versatile non-oxide ceramic offers numerous possible uses as a construction material. This makes it worth considering working with competent technology partners to expand the portfolio of applications of this material – because we have not yet exhausted the potential of this high-performance ceramic. Silicon nitride (Silicon nitride) is a very light ceramic material that can respond to extreme requirements to resist wear, abrasion, and temperature. These properties are in high demand in numerous industrial applications, such as ball and cylindrical roller bearings in machine and vehicle construction. The microstructure of silicon nitride also makes it interesting for metal forming – such as cutting tools that are subject to thermal shock, the machining of carbide metal materials as forming and punching tools, as well as for aluminum smelting companies. If you are looking for high quality, high purity and cost-effective Silicon Nitride, or if you require the latest price of Silicon Nitride, please feel free to email contact mis-asia.