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This high performance ceramic material has the strongest covalent bond properties next to silicon carbide, it's used as high temperature ceramic components due to its superior hardness, strength and excellent thermal shock resistance, these properties make it ideal for use in mechanical, thermal and wear applications.
Although Silicon Nitride has high hardness, we owns strong machining ability to meet customers' requests on
sophisticated designs, tigth tolerances and smooth surface.
silicon nitride /si3n4 ceramic products
silicon nitride ceramics, GPS ceramic, structure ceramics, industrial ceramic, precise ceramics
Type : tube, bush, washer. pin, plate, block, rod, ball, bearing ball
Specifications: atandard size & suctomized size
Advantage: professional manufacturer with advanced technology of silicon nitride ceramics.
1. Longer service life of forming rolls. Service life of silicon nitride forming rolls is about 9 times and 2~3 times longer than that of metal and tungsten carbide forming roll, respectively.
2. Higher working temperature. Silicon nitride forming rolls could be used at , temperature up to 1000°C. While generally, steel forming rolls can only be used below 300°C
3. Better surface roughness quality of the metal works is achieved
4. Pick-up of the metal works is eliminated
5. Scrap of metal works is reduced
6. Consistency and reliability of metal works is in creased
7. Post-processing of metal works is reduced
8. Productivity is increased
| Item | Si3N4 silicon nitride ceramic tube/bush/bushing |
| Material | Si3N4/Silicon Nitride |
| Form | Solid |
| Sintering Method | Gas Pressure Sintering |
| Ceramic Shape | Rod, Plate, Block, Ring, Washer, Disc, Wafer, Screw, Tube, Bush, Sleeve, Nozzle, Irregular Shapes and Customized Shapes. |
| Machining Ability | Cylindrical Grinding, Centerless Grinding, Plane Grinding, Polishing, Drilling, Cutting, Turning, etc. |
| Technology Advantage | With strong support from experienced and advanced R&D center, quality control team and professional machining technicians, we are more competitive in the stability of quality and superiority of property. |
| Delivery Advantage | Delivery time should be 3-5 days faster than industry average because of creative and effective management system. |
| Typical Applications | 1. Rotating bearing balls and rollers |
| 2. Cutting tools | |
| 3. Semiconductor handling parts | |
| 4. Weld positioners | |
| 5. Nozzles | |
| 6. Metal tube forming rolls and dies | |
| 7. Bearing balls and rollers | |
| 8. Electronic components | |
| 9. Engine and turbine components | |
| 10. Amor | |
| 11. Rotors |
Typical characteristics of Silicon carbide SiC bond Si3N4 tube
1. High Hardness, Out Standing Wear Resistance
2. High Strength Over A Wide Temperature Range
3. Low Density, Light Weight
4. Good Thermal Shock Resistance
5. Low Thermal Expansion
6. Excellent Thermal Shock Resistance
7. Low Thermal Conductivity
8. Good Chemical Inertness, Acid and Alkali Corrosion
Properties of Silicon carbide SiC bond Si3N4 tube:
Type | Si3N4 -SiC bonded | |
Specifications | Guarantee | Typical |
Max.Hot face Temp | 1650℃ | 1650℃ |
Cold Modulus of Rupture | ≥45 Mpa | 52.1MPa-72.6MPa |
1400℃ Modulus of Rupture | ≥50 Mpa | 58.1MPa-65.7MPa |
Cold Crushing Strength | ≥150 Mpa | 151MPa-208MPa |
Density | ≥2.68 g/cm3 | 2.68-2.80g/cm3 |
Thermal Expansion | ≤4.8×10-6（20-1400℃） | 4.7×10-6（20-1400℃） |
Porosity | ≤16% | 10.8-15.8% |
Thermal Conductivity | ≥16 W/m.K | 17.5W/m.K(1100℃) |
SiO2 | ------- | 2.34% |
Fe2O3 | ------- | 0.29% |
SiC | ≥70% | 74.17% |
Si3N4 | ≥20% | 22.58% |
Si | ≤0.5% | 0.27% |
