Silicon Nitride Nozzle

Silicon nitride nozzle basic characteristics of Silicon nitride nozzle Silicon nitride (Si₃N₄) nozzle are high-performance ceramic nozzles that perform exceptionally well in high-temperature, high-wear and corrosive environments due to their unique material properties. The characteristics of...

Silicon nitride nozzle

basic characteristics of Silicon nitride nozzle

Silicon nitride (Si₃N₄) nozzle are high-performance ceramic nozzles that perform exceptionally well in high-temperature, high-wear and corrosive environments due to their unique material properties.

The characteristics of silicon nitride

1: High hardness and wear resistance: Its hardness is second only to that of diamond and cubic boron nitride, making it suitable for long-term resistance to particle erosion (such as sandblasting and powder conveying).
2: Outstanding high-temperature stability: It can maintain performance above 1200°C without softening or deformation, and is suitable for high-temperature flame spraying or burners.
3: Thermal shock resistance: It is not prone to cracking under rapid temperature changes (such as sudden cooling from high temperatures).
4: Chemical inertness: Resistant to acid, alkali and molten metal corrosion, suitable for chemical or semiconductor etching processes.
Low density: Lighter in weight than metal nozzles, reducing equipment load.

Manufacturing process: Air pressure Sintering (GPSN) : It has the best comprehensive performance, can produce complex shapes, but has a relatively high cost.

performance advantages of Silicon nitride nozzle

Materials	Wear resistance	High temperature resistance	Anti-corrosion	Cost	Applicable scenarios
Silicon nitride	Extremely high	Excellent	Excellent	High	Extreme working conditions (high temperature/corrosion)
Tungsten carbide (WC)	High	Medium	Medium	Medium	Conventional sandblasting
Alumina ceramics	Medium	Good	Good	Low	Low-wear environment
Stainless steel	Low	Poor	Medium	Low	Non-corrosive normal temperature environment

Application Fields Silicon nitride nozzle

3D printing (SLS/DED) : Precise control of metal/ceramic powder ejection.

Industrial sandblasting/shot peening: Used for surface treatment, with a lifespan far exceeding that of tungsten carbide or steel nozzles.
Thermal spraying (such as plasma spraying) : Resistant to the impact of high-temperature molten particles.

Semiconductor manufacturing: Resistance to corrosive gases (such as HF, Cl₂) in etching and CVD processes.

Combustion equipment: Gas turbine nozzles, industrial furnace burners, resistant to high-temperature oxidation.