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{"title":"Black High Thermal Shock Resistance Customizable Silicon Nitride Ceramic for Non","imgUrl":"https:\/\/img.chinax.com\/nimg\/b9\/c2\/81e787189b6a8899dc6bb09fcffe-200x200-1\/black_high_thermal_shock_resistance_customizable_silicon_nitride_ceramic_for_non_standard_structural_parts.jpg","attrs":{"Material":"Silicon Nitride","Composition:SiC":"\uff1e85%","Color":"Black","Density":"3.20-3.26g\/cm3"}}
{"title":"Gas Pressure Sintering Silicon Nitride Forming Rollers with High Fracture","imgUrl":"https:\/\/img.chinax.com\/nimg\/71\/22\/c7365caade4b3b1f4a29aa1bc9aa-200x200-1\/gas_pressure_sintering_silicon_nitride_forming_rollers_with_high_fracture_toughness_and_thermal_shock_resistance_in_customizable_s.jpg","attrs":{"Brand Name":"KEGU","Place of Origin":"China","Price":"200-500 yuan\/kg","Payment Terms":"L\/C,D\/A,D\/P,T\/T,,"}}
{"title":"High Temperature Resistant Silicon Nitride Ceramic with Exceptional Mechanical","imgUrl":"https:\/\/img.chinax.com\/nimg\/07\/c4\/2c608d2ef9baedfedc56f4c702c4-200x200-1\/high_temperature_resistant_silicon_nitride_ceramic_with_exceptional_mechanical_strength_and_excellent_fracture_toughness.jpg","attrs":{"Brand Name":"KEGU","Place of Origin":"China","Price":"200-500 yuan\/kg","Payment Terms":"L\/C,D\/A,D\/P,T\/T,,"}}
Silicon nitride nozzles and covers feature exceptional 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. GPS involves sintering at temperatures around 2000°C under nitrogen pressures of 1-10 MPa. The high nitrogen pressure prevents silicon nitride decomposition, while elevated temperatures enable substantial grain growth with minimal sintering aids. This process yields high-toughness ceramics with long columnar grains and densities exceeding 99%, providing excellent toughness, strength, and wear resistance while enabling near-net-shape production to reduce manufacturing costs.
Silicon Nitride Nozzle & Covers Specifications
Size
Customized
Color
Black
Density
3.22 g/cm³
Flexural Strength
800 MPa
Fracture Toughness
6.5 MPa·m¹/²
Thermal Stress Parameters
569 K
Material Properties Data Sheet
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 Temperature
°C
1200
Volume Resistivity
Ω·cm
>10¹⁴
Dielectric Constant
-
8.20
Dielectric Strength
kV/mm
16
* Tests conducted under room temperature environment
* Properties may vary depending on manufacturing method
Key Material Characteristics
High strength across wide temperature ranges
Exceptional fracture toughness
High hardness rating
Outstanding wear resistance
Low thermal expansion with high thermal conductivity
Excellent thermal shock resistance
Superior chemical and oxidation resistance
Contact our sales team at sales@industrial-ceramicparts.com for detailed information or technical inquiries.
Packaging & Handling
Silicon nitride's inherent fragility requires careful handling during storage and transportation. Our nozzles and covers are packaged using protective outer boxes and specialized cushioning materials. Vacuum packaging is employed for select components to ensure optimal protection.
