Thermal Shock Resistant Silicon Nitride Si3N4 Mesh High Precision Sintering Screen for New Energy Powder Processing
Silicon Nitride Screen Mesh:
Silicon Nitride Screen Mesh is a high-performance structural ceramic screening component made of high-purity Si3N4 raw materials, manufactured through precise mold pressing, high-temperature gas pressure sintering and fine finishing processes. Different from traditional metal mesh and ordinary alumina ceramic mesh, the silicon nitride screen mesh integrates high-temperature stability, superior mechanical toughness and strong chemical inertness. It perfectly solves the common defects of traditional screens, including metal mesh oxidation, high-temperature deformation, wire breakage, and brittle cracking of ordinary ceramic mesh. Widely used in high-temperature powder sieving, material classification, sintering bearing and filtration processes, Si3N4 screen mesh is a reliable and long-life core accessory for new energy materials, ceramic powder, chemical and metallurgical industries.
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Si3N4 Ceramic Parts are a man made compound synthesized through several different chemical reaction methods. they are pressed and sintered by well developed methods to produce a ceramic with a unique set of outstanding properties. The material is dark gray to black in color and can be polished to a very smooth reflective surface, giving parts with a striking appearance.
Excellent High Temperature Resistance: Silicon nitride ceramic screen mesh can operate stably at 1200°C to 1400°C for a long time without softening, sagging or structural failure. It maintains stable mesh shape and aperture accuracy in continuous high-temperature sintering and sieving environments, which metal screens cannot achieve.
Superior Thermal Shock Resistance: Featuring ultra-low thermal expansion coefficient, the Si3N4 screen mesh can withstand repeated rapid heating and cooling cycles. It resists cracking, peeling and mesh deformation caused by drastic temperature fluctuations, ensuring consistent screening accuracy in cyclic production.
High Toughness & Structural Stability: Compared with brittle alumina ceramic mesh, silicon nitride screen mesh owns outstanding fracture toughness and bending strength. It is not easy to break or chip during installation, vibration and material impact, greatly improving operational stability and service durability.
Strong Corrosion & Oxidation Resistance: Si3N4 ceramic material features excellent high-temperature oxidation resistance and chemical inertness. The screen mesh resists acid, alkali, corrosive gas and molten powder erosion. It will not rust, oxidize or pollute materials, ensuring high purity of processed powder products.
High Precision Aperture & High Permeability: Adopting professional mold forming and precision post-processing technology, the ceramic screen mesh features uniform aperture size, smooth mesh surface and high open area. It ensures efficient powder screening, uniform material filtration and no particle blocking, improving production efficiency.
Long Service Life & Low Maintenance Cost: Silicon nitride screen mesh has far longer service life than metal screens and ordinary ceramic screens under high-temperature and corrosive working conditions. It effectively reduces frequent replacement frequency, equipment downtime and overall production maintenance costs.
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Silicon Nitride Material Sheet
| Properties |
Units |
Silicone Nitride |
| Mechanical |
Density |
gm/cc |
3.2 |
| Porosity |
% |
0 |
| Flexural Strength |
Mpa |
830 |
| Compressive Strength |
Mpa |
2500 |
| Elastic Modulus |
Gpa |
310 |
| Poisson's Ratio |
/ |
0.27 |
| Hardness |
kg/mm2 |
1580 |
| Fracture Toughness KIC |
Mpa *m 1/2 |
6.1 |
| Thermal |
Heat Conductivity |
W/ m*k |
30 |
| Coefficient of Thermal Expansion |
10⁻⁶/K |
3.3 |
| Specific Heat |
j/kg*K |
/ |
| Thermal Shock Resistance |
°C |
/ |
| Max UseTemperature |
°C |
1400 |
| Electrical |
Dielectric Strength |
ac-kv/mm |
/ |
| Dielectric Constant |
/ |
8 |
| Loss Tangent |
/ |
/ |
| Volume Resistivity |
ohm•cm |
>1014 |
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Features:
● High Hardness
Silicon nitride exhibits extremely high hardness, making it suitable for fields such as wear-resistant and cutting tools.
● Excellent Wear Resistance
Silicon nitride ceramic exhibits outstanding wear resistance, making it suitable for applications in high-wear environments.
● Superior Insulating Performance
Silicon nitride ceramic possesses excellent electrical insulation properties and chemical stability, making it widely used in the electronics and semiconductor industries.
● High Temperature Stability
It can maintain stability in high-temperature environments, making it suitable for applications like high-temperature heaters and furnaces.
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Applications:
Rotating ball bearings and rollers bearings
Cutting tools
Engine components: valves, rocker arm pads, seal faces
Induction heating coil supports
Turbine blades, vanes, buckets
Welding and brazing jigs
Heating element components
Crucibles
Metal tube forming rolls and dies
TIG / Plasma welding nozzles
Weld positioners
Precision shafts and axles in high-wear environments
Thermocouple sheaths and tubes
Semiconductor process equipment
