• 0
  • 0

What is silicon nitride used for

Silicon nitride was found in the center of the 19th century, however it is not easy to make because of its covalent bond. Silicon nitride ceramic is a sort of advanced engineering porcelains with high strength, crack sturdiness, firmness, use resistance and also great chemical and also thermal stability. Silicon nitride is a kind of polycrystalline composite, which is made up of silicon nitride grains (solitary crystals) installed in amorphous or partially crystalline glass phase matrix. Their buildings depend not only on the inherent properties of silicon nitride single crystals, but likewise on the size and also morphology of silicon nitride grains, as well as the quantity fraction and also chemical residential or commercial properties of the glass phase at the silicon nitride grain borders. Si3N4 has superb mechanical, thermal and also physicochemical properties and also can be made use of in traditional and extremely innovative options. Si3N4'' s lightweight, high flexing stamina, excellent wear resistance and also capacity to endure the toughest environments make Si3N4 a trustworthy and often the only choice to typical products such as stainless-steel, tungsten carbide as well as oxide-based materials.

Automobile sector.
Among the main applications of sintered silicon nitride is as a product for engine components in the vehicle market. These consist of, in diesel motor, electrical plugs for faster startup; precombustion chambers for lower exhausts, faster start-up and lower sound; and also turbochargers to reduce engine lag and also discharges. In trigger ignition engines, silicon nitride is utilized to reduce worn rocker pads, turbocharger wind turbines to lower inertia as well as engine lag, and also exhaust control valves to boost velocity.

Silicon nitride bearing is not just an all-ceramic bearing, but additionally a ceramic crossbreed bearing, the ball is ceramic and also the seat ring is steel. Compared with various other ceramics, silicon nitride porcelains have excellent shock resistance. For that reason, the sphere bearings constructed from silicon nitride porcelains are used for high performance bearings. Silicon nitride bearings are made use of generally engine of the NASA space shuttle. Considering that silicon nitride sphere bearings are harder than metal, this decreases contact with birthing tracks. Compared to typical metal bearings, this can decrease friction by 80%, expand service life by 3 to 10 times, raise rate by 80%, decrease weight by 60%, run under not enough lubrication, have higher corrosion resistance and greater operating temperature. The weight of silicon nitride ball is 79% lighter than tungsten carbide sphere. Silicon nitride round bearings can be used in high-end automotive bearings, industrial bearings, wind turbines, competing sports, bicycles, roller skates and skateboards. Silicon nitride bearings are specifically helpful in applications where rust or electrical or electromagnetic fields forbid making use of steels, such as in tidal Flowmeters, where seawater erosion is a trouble, or in electrical area detectors.

High temperature product.
Silicon nitride has actually long been made use of in high temperature applications. In particular, it has actually been recognized as one of minority essential ceramic materials that can endure severe thermal shocks and also thermal gradients generated by hydrogen/ oxygen rocket engines. To demonstrate this capability in complicated configurations, NASA researchers used advanced rapid prototyping innovation to create one-inch size one-piece combustion chamber/ nozzle (thruster) assemblies. The thruster was hot evaluated with hydrogen/ oxygen propellant and went through five cycles, including a 5-minute cycle to 1320 °& deg; C material temperature.

Clinical occupation.
Silicon nitride has many orthopedic applications. The material is additionally an alternative to PEEK (polyether ether ketone) and titanium for back fusion gadgets. Compared to PEEK as well as titanium, the hydrophilic and micro-textured surface areas of silicon nitride assistance to boost the toughness, longevity and reliability of the materials. Some structures of this material have antibacterial, antifungal or antiviral homes.

Metal working as well as reducing devices.
Because of its solidity, thermal stability and also wear resistance, bulk and monolithic silicon nitride is made use of as the material of cutting tools. Especially suggested for high-speed machining of actors iron. Thermal solidity, crack sturdiness and thermal shock resistance indicate that sintered silicon nitride can reduce actors iron, difficult steel and also nickel-based alloys with a surface area rate 25 times faster than traditional products such as tungsten carbide. Cutting tools have a great effect on making outcome. For example, compared with standard tungsten carbide tools, face milling of grey cast iron with silicon nitride blades doubles the cutting rate, enhances device life from one component per blade to 6 components, and also decreases the average price of the blade by 50%.

Digital industry.
Silicon nitride is generally made use of as an insulator as well as chemical barrier in incorporated circuit producing to electrically separate different structures or as an etching mask wholesale micromachining. As the passivation layer of integrated circuit, it is better than silicon dioxide since it has a considerably far better diffusion barrier to water molecules as well as salt ions (both main resources of corrosion and instability in microelectronics). It is also used as a dielectric in between polysilicon layers in analog chip capacitors.

Silicon nitride Cost
The rate is affected by numerous factors including the supply as well as demand in the market, market fads, economic activity, market view, as well as unforeseen occasions.
If you are searching for the most recent Silicon nitride powder cost, you can send us your inquiry for a quote. (

Silicon nitride Distributor
Technology Co. Ltd. is a trusted Si3N4 maker as well as Si3N4 provider with over 12-year-experience. We deliver our items all over the world.

If you are searching for high-grade Si3N4 powder, please feel free to call us and send out a questions. (

Inquiry us


Our Latest Answers

What is silicon nitride used for

Silicon nitride was found in the center of the 19th century, however it is not easy to make because of its covalent bond. Silicon nitride ceramic is a sort of advanced engineering porcelains with high strength, crack sturdiness, firmness, use resista…

Is alumina toxic to the human body

Is alumina toxic to the body?Light weight aluminum is typically located on the earth in the type of alumina or bauxite. When light weight aluminum is revealed to the air, alumina is formed and also a thin surface layer is based on the aluminum, makin…

Silicon Nitride structures and properties

Crystal structure of Silicon NitrideSi3N4 has two type of crystal framework: α& alpha;- Si3N4 is granular crystal and β& beta; -Si3N4 is needle crystal. Both of them are three-dimensional networks composed of typical vertices of [SN4] tetr…