| Model NO. | Customized |
|---|---|
| Material | Silicon Nitride |
| Density | Over 3.2g/cm3 |
| Color | Black |
| Shaping Methods | Dry Pressed, ISO Pressed, Hot Pressed |
| Secondary Process | CNC Machining, Fine Grinding |
| Certificate | RoHS, Reach, ISO9001:2008 |
0.32mm 0.5mm Thick Ceramic Silicon Nitride Wafer
The prime features
1.Low density: 3.2 g/cm3 with lightweight than most other technical ceramics
2. Superior hardness, it’s one of most hardest technical ceramic than others
3. Great wear resistance due to its exceptional hardness and self-lubricity
4. Low coefficient of thermal expansion and high thermal conductivity (20 W/m.k)
5. Great thermal shock resistance, it’s up to 1000ºC under the special atmosphere
6. High mechanical strength and well resistance to impact than other advanced ceramics
7. Heat & high-temperature resistance, The max. service temperature can be up to 1300ºC
8. Chemical and corrosion resistance, resistant to almost all inorganic acids and many organic acids
9. At the same time, Silicon nitride is a high-performance electrical insulation material
The specification
| Material option | Silicon nitride(Si3N4), Zirconia (ZrO2), Alumina(Al2O3), Silicon carbide(SiO2) |
| Forming methods | Dry pressed, Ceramic injection molding, Hot pressed, ISO pressed |
| Specification | OD can be from 1 to 50mm, length can be from 10mm to 800mm |
| Precision processing | CNC machining, Precision grinding, Polishing, Lapping, |
| Tolerance | The tolerance of OD and ID can be 0.001mm, the tolerance of length can be 0.001mm |
| Key parameters | Roughness to be 0.02mm, Parallelism to be 0.001mm |
| Surface quality | Free of cracks, foreign contamination, mirror surface better than Ra0.1 |
The description of Si3N4 ceramic wafer
Silicon nitride is a man-made compound synthesized through several different chemical reaction methods. Parts 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 a striking appearance. High-performance silicon nitride materials were developed for automotive engine wear parts, such as valves and cam followers, and proven effective. The cost of the ceramic parts never dropped enough to make the ceramics feasible in engines and turbochargers. The very high-quality bodies developed for these demanding high-reliability applications are available today and can be used in many severe mechanical, thermal, and wear applications.
The typical application of Si3N4 ceramics
It’s widely used for producing bearings, shaft, gas turbine blades, mechanical seal rings, and permanent molds, steam nozzle, the heated surfaces of engine components.
Jinghui Ceramic
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