Relative density for silicon nitride (SiN) is 3.18 Silicon nitride’s Morse hardness range is 9. It has a low coefficient of thermal expansion, excellent chemical stability, and great oxidation resistance. The material is decomposed into silicon and nitrogen at 1900. Silicon nitride has a very strong strength and is resistant to heat. Even at temperatures above 1200°C, the strength of silicon nitride will not be affected. It won’t melt even if heated. The material will continue to be inert until the year 1900. It can resist corrosion of nearly all organic and inorganic acids. Silicon nitride is hard and has a low coefficient for thermal expansion. This gives it the ability to withstand thermal shock, provide excellent insulation, maintain high chemical properties, and have good mechanical strength.
Silicon nitride properties
The product has high resistance to a large temperature range.
High strength for fractures
Good bending strength.
Crescendo and mechanical fatigue
You can expect high wear resistance, hardness, and impact resistance.
Superior resistance to thermal shock.
Thermoplastic expansion is low.
Insulator for electrical power.
High resistance to oxygenation
High resistance to chemical corrosion
What advantages does silicon nitride offer?
Its high thermal expansion coefficient, which is lower than other technical ceramics makes silicon nitride more resistant to heat shock. It’s extremely durable, with a high melting point and excellent resistance against oxidation. It can therefore endure the toughest high load and high temperatures applications.
Silicon nitride bearings are used in spacecraft’s main engines. They have been identified as being one of few ceramic materials that can resist severe thermal shocks or thermal gradients caused by oxygen and hydrogen rocket engines. This material has proven to be reliable and completely reliable through the whole space shuttle programme.
Why is silicon Nitride used?
It is used for heat engine materials and insulating materials.
Silicon nitride clays can be used for combustion chambers of gas turbines, as well as pipeline and valves of electromagnetic pumps. They are useful in conveying liquid aluminum, permanent mould, and molten-steel separation rings.
It has a low friction coefficient, and it is often used for high-temperature bearings. The working temperature of silicon nitride can exceed 1200F. This is 2.5x higher than the working temperature of normal alloy bearings. It can also work at 10 times the speed of regular bearings.
A silicon nitride-ceramic with high electrical insulation and resistance to heat and cold can be used for an electric plug. It can significantly reduce engine start time, and allow the vehicle to begin quickly even in freezing weather.
High temperature resistance, good microwave permeability, high dielectric properties, as well as excellent heat strength make silicon nitride ceramics ideal for radar radomes in aircraft and missiles.
Silicon Nitride Price
Price is affected by many things, such as the demand and supply in the market and industry trends. Economic activity. Unexpected events.
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Silicon Nitride Supplier
Buffalotours advanced materials Nano Technology Co. Ltd. is trusted si3N4 producer and si3N4 supplier. It has over 12-years of experience. All of our products are available for shipment worldwide.
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