Silicon Nitride (Si3N4) Structural Parts

Silicon Nitride (Si3N4) Structural Parts are structural parts made from silicon nitride ceramic material. Silicon nitride ceramic is a very important material with excellent physical and chemical properties, and is therefore widely used in electronics, optoelectronics, ceramics, and other fields.

Ⅰ. Product Characteristics:

(1) Corrosion resistance: It can be used in strong acids and bases.  Except for hydrofluoric acid, it does not react with other inorganic acids.

(2) High temperature resistance: The strength and hardness of silicon nitride ceramics remain almost unchanged at 1200℃, and it does not melt into a liquid state when heated, only decomposing at 1900℃.

(3) Non-magnetic, electrically insulating, and low thermal conductivity, making it suitable for insulation and heat insulation materials.

(4) Wear resistance, lightweight, and higher strength and hardness than general ceramic materials.

(5) Low thermal expansion coefficient: It can withstand rapid temperature changes. Even when heated to above 1000℃ in air, then rapidly cooled and rapidly reheated, it will not crack.

Ⅱ.Application Areas:

(1) Metallurgical Industry: Silicon nitride thermocouple protection tubes, radiant tubes, liquid lifting tubes, quantitative feeding tubes, degassing rotors, etc., possess advantages such as high strength, high temperature resistance, corrosion resistance, non-wetting by molten metals, and long service life. They are widely used in non-ferrous metallurgy industries such as aluminum casting.

(2) Sintering Furnace Industry: Used for high-pressure electrode insulation rings and heat shields in polycrystalline silicon reduction furnaces/ammonia furnaces.