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nitride – Properties and Applications |

What is Silicon Nitride?

Silicon nitride has an organic chemical formula of Si3N4. It is an important structural ceramic material, with high hardness and inherent lubricity. It also wears well. It is also resistant to heat and cold. It is resistant to heat and cold, even if heated to over 1000°C in the air. This is because of the exceptional characteristics of silicon-nitride ceramics. It is used often to make bearings. The heating surfaces of engine components can be made from silicon nitride clays which can withstand high temperatures and transfer heat well. This will improve engine quality, fuel economy, and efficiency.
Silicon nitride application:

High thermal stability, high oxidation resistance, and excellent product size accuracy are some of the outstanding properties of silicon nitride ceramic materials. Silicon nitride, a covalent chemical with high bond strength that can form an oxygen protective film in the atmosphere, has excellent chemical stability. It is resistant to oxidation below 1200°C. The formation at 12001600degC of a protective coating can prevent further corrosion. However, it can be corroded or infiltrated by molten magnesium or nickel-chromium alloy, as well as stainless steel.

Silicon nitride ceramics are used for high-temperature engineering, advanced refractories and chemical industry sealing components. They also can be used as tools and cutting instruments in the machining sector.

Because silicon nitride forms strong bonds with aluminum oxide, silicon carbide, silicon carbide, thorium dioxide, boron and thorium dioxide it can be used to modify different proportions.

Silicon nitride can also applied to solar cells. After the silicon-nitride nitride is plated using the PECVD process, it can be used as an antireflection film to reduce reflection of incident sunlight. However, during deposition of silicon nitride, hydrogen atoms from the reaction product enter silicon nitride and the silicon wafer. This plays a part in passingivating defects. The ratio between silicon nitride atoms and silicon nutrides is not exactly 4:3, but it fluctuates according to process conditions. The film’s physical properties are affected by different atomic ratios.

Silicon nitride’s excellent electrical, thermal and physical properties make it a popular choice for electric furnaces, aircraft engines, gas turbines and ultra-high temperatures.

Tech Co., Ltd. is a Silicon Nitride company with more than 12 years of experience in chemical products development and research. We are available to answer your questions and provide high-quality Silicon Nitride.

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