| Customization: | Available |
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| Application: | Industrial Applications |
| Density: | Over 3.2g/cm3 |
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1. Low density: 3.2 g/cm3 with lighter than most other technical ceramics
2. Superior hardness, it's one of most hardest technical ceramics than others| 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 the silicon nitride ceramic plate
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 have 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.
Datasheet of Technical ceramics
| Property | Unit | Material | ||||
| Si3N4 | 99.5% Al2O3 | 99% Al2O3 | 96% Al2O3 |
ZrO2 | ||
| Density | g/cm3 | ≥3.20 | ≥3.90 | ≥3.85 | ≥3.65 | ≥6.0 |
| Water absorption | % | - | 0 | 0 | 0 | 0 |
| Hardness | HV | - | 1700 | 1700 | 1500 | 1300 |
| Flexural strength | Mpa | ≥600 | ≥379 | ≥338 | ≥320 | ≥1200 |
| Compressive strength | Mpa | ≥2500 | ≥2240 | ≥2240 | ≥2000 | ≥1990 |
| Fracture toughness | Mpa m1/2 | 6 | 4-5 | 4-5 | 3-4 | 6.5-8 |
| Max. service temperature | ºC | 1200 | 1675 | 1600 | 1450 | 1000 |
| Coefficient of thermal expansion (CTE) | 1×10 -6 /ºC | 3.2 | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 |
| Thermal shock | T(ºC) | ≥600 | ≥250 | ≥200 | ≥220 | ≥300 |
| Thermal conductivity(25ºC) | W/m.k | 20 | 30 | 29 | 24 | 3 |
| Volume resistivity | ohm.cm | |||||
| 25ºC | - | >1 x 10 14 | >1 x 10 14 | >1 x 10 14 | >1 x 10 11 | |
| 300ºC | - | 1 x 10 12 | 8 x 10 11 | 10 12 -10 13 | 1 x 10 10 | |
| 500ºC | - | 5 x 10 10 | 2 x 10 9 | 1 x 10 9 | 1 x 10 6 | |
| Insulation strength | KV/mm | 19 | 18 | 18 | 17 | |
| Dielectric constant(1Mhz) | (E) | 6 | 9.7 | 9.5 | 9.5 | 29 |
Our capability and strength
We have in-house comprehensive manufacturing types of equipment, including forming, sintering, CNC machining, precision grinding, laser cutting, and so on, which helps us to control the quality very well.
Also, it greatly benefits cost control.
The state-of-the-art manufacturing equipment
Rigorous Quality-control System
Remark:
We have the complete quality-control system per ISO9001, including IQC, IPQC, QA, and OQC process.
Typical Packaging Proposal and Transportation Methods
1. Packaging proposal
2. Regular Transporation Methods
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