Si3N4 Nozzle Silicon Nitride Ceramic with High Temperature Strength Customizable and High Chemical Stability

Price Negotiable

Price: 200-500 yuan/kg

MOQ: Negotiable

Delivery Time: Negotiable

Brand: KEGU

Product Description

Si3N4 Nozzle Silicon Nitride Ceramics Oxidation Resistance High Toughness

Silicon nitride nozzles and covers feature oxidation resistance, high temperature strength and minimal sputter adhesion, significantly extending the service life of welding components.

Among the five silicon nitride production methods, Gas Pressure Sintering (GPS) is most commonly used for manufacturing Si3N4 components:

Gas pressure sintering of silicon nitride is performed at 1-10 MPa pressure and approximately 2000°C. The high nitrogen pressure prevents silicon nitride pyrolysis. This high-temperature sintering process enables Si3N4 grain growth with minimal sintering aids, producing high-toughness ceramics with long columnar grains and in-situ growth density exceeding 99%. The resulting material offers high toughness, strength, and wear resistance, allowing direct production of complex-shaped products that minimize production and processing costs.

Silicon Nitride Nozzle & Covers Specifications

Size	Customized
Color	Black
Density	3.22 g/cm³
Flexural strength	800 MPa
Fracture toughness	6.5 MPa m^1/2
Thermal stress parameters	569 K

Material Properties of Silicon Nitride

Item	Unit	Si3N4
Type	-	Gas pressure sintered
Density	g/cm³	3.22
Color	-	Dark grey
Water Absorption	%	0
Young Modulus	Gpa	290
Vickers Hardness	Gpa	18-20
Compressive Strength	Mpa	2200
Flexural Strength	Mpa	650
Thermal Conductivity	W/m.K	25
Thermal Shock Resistance	Δ(°C)	450-650
Max. Working Temp.	°C	1200
Volume Resistivity	Ω*cm	> 10^14
Dielectric Constant	-	8.20
Dielectric Strength	kV/mm	16

* Tests conducted under room temperature environment

* Properties may vary depending on manufacturing method

Key Characteristics of Silicon Nitride Ceramics

High strength across wide temperature ranges
Exceptional fracture toughness
High hardness rating
Superior wear resistance
Low thermal expansion with high thermal conductivity
Excellent thermal shock resistance
Strong resistance to chemical and oxidation effects

For more information or inquiries, please contact sales@industrial-ceramicparts.com.

Packaging Information

As a ceramic material, silicon nitride requires careful handling to prevent damage during storage and transportation. Our silicon nitride nozzles and covers are packaged with protective outer boxes and cushioning materials, with vacuum packing employed for certain components.