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{"title":"Silicon Nitride Pouring Spoon and Crucible with Ultimate Thermal Shock","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/be\/f20468adce41fff6ac66a57916be-200x200-1\/silicon_nitride_pouring_spoon_and_crucible_with_ultimate_thermal_shock_resistance_and_superior_non_stick_aluminum_properties_for_t.jpg","attrs":{"Material":"Silicon Nitride","Composition:SiC":"\uff1e85%","Color":"Black","Density":"3.20-3.26g\/cm3"}}
{"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":"Si3N4 Nozzle Silicon Nitride Ceramic with Oxidation Resistance High Toughness","imgUrl":"https:\/\/img.chinax.com\/nimg\/7d\/7a\/4ca4ad1d791f38acff211d5d98b2-200x200-1\/si3n4_nozzle_silicon_nitride_ceramic_with_oxidation_resistance_high_toughness_and_high_temperature_strength.jpg","attrs":{"Material":"Silicon Nitride","Composition:SiC":"\uff1e85%","Color":"Black","Density":"3.20-3.26g\/cm3"}}
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.
