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Silicon Nitride Powder Properties And Applications

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Update time : 2021-11-15 10:05:27
Silicon nitride is an inorganic substance with the chemical formula Si3N4. Silicon nitride is an important structural ceramic material with high hardness, lubricity and wear resistance. Silicon nitride is very strong, especially hot-pressed silicon nitride, which is one of the hardest materials in the world.

Silicon Nitride Powder Properties

Silicon nitride hardly interacts with water; it is slowly hydrolyzed in a strong acid solution to generate ammonium salt and silicon dioxide; it is easily soluble in hydrofluoric acid, and does not work with dilute acid. The strong alkali solution can slowly corrode silicon nitride, and the molten alkali can quickly transform silicon nitride into silicate and ammonia.

Silicon nitride is extremely resistant to high temperatures, and its strength can be maintained to a high temperature of 1200°C without falling. It will not melt into a melt after being heated, and will not decompose until 1900°C. It has amazing chemical resistance. Silicon nitride can withstand almost all inorganic acids and caustic soda solutions below 30%, as well as corrosion by many organic acids; at the same time, it is a high-performance electrical insulating material.


Silicon Nitride Powder Applications

Silicon nitride ceramics have the characteristics of high strength and high temperature resistance. Among the ceramic materials, it has the best comprehensive mechanical properties, thermal shock resistance, oxidation resistance, abrasion resistance, and corrosion resistance. It is the first ceramic used in thermomechanical components. A candidate material. In the machinery industry, silicon nitride ceramics are used as bearing balls, rollers, ball races, molds, new ceramic cutting tools, pump plungers, and mandrel sealing materials.

In the chemical industry, silicon nitride ceramics are used as wear-resistant and corrosion-resistant parts, such as ball valves, pump bodies, combustion vaporizers, filters, etc.

In the metallurgical industry, silicon nitride ceramics are resistant to high temperatures, have a low friction coefficient and are self-lubricating. It is stable to most metal and alloy solutions. Therefore, it can be used to produce metal material processing tools and dies, such as dial mandrels, extrusion and wire drawing dies, rollers, transfer rollers, heating element fixtures, thermocouple sets, metal heat treatment supports , Crucible, aluminum liquid guide camp, aluminum cladding lining, etc.

Silicon nitride ceramics have excellent characteristics, and people often use it to make bearings, turbine blades, mechanical seal rings, permanent molds and other mechanical components. If silicon nitride ceramics, which are resistant to high temperature and difficult to transfer heat, are used to make the heating surface of engine parts, it can not only improve the quality of diesel engines, save fuel, but also improve thermal efficiency.

Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional nitride powder supplier with over 12 years experience in chemical products research and development. We accept payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.

If you are looking for high quality silicon nitride powder, please feel free to contact us and send an inquiry.
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