Description
Produced from high-purity silicon powder by direct nitridation, with proprietary control over the silicon feedstock, the nitridation stage and the downstream milling process. The result is a substrate-grade silicon nitride powder with high purity, high α-phase content, a uniform particle-size distribution and high sintering activity.
Key features
- High strength, high hardness, high electrical resistivity
- Good thermal-shock resistance
- Low dielectric loss and low expansion coefficient
- High sintering activity, stable quality
Applications
Silicon nitride substrates and high-thermal-conductivity structural components.
Typical certificate of analysis — DHG-GDRF-01
| Test item | Specification | Test method | Measured | Standard |
|---|---|---|---|---|
| α-phase content (%) | ≥ 92 | XRD | 94.3 | JIS R1640 |
| Oxygen content O (%) | ≤ 1.5 | Infrared absorption | 1.32 | ASTM C1494 |
| Nitrogen content N (%) | ≥ 38.5 | Infrared absorption | 38.9 | ASTM C1494 |
| Particle size D50 (µm) | ≤ 10 | Laser diffraction | 9.7 | GB/T 19077.1 |
| Iron Fe (ppm) | ≤ 5 | ICP-AES | 374 | SG-GC-07.1-2009 |
| Aluminium Al (ppm) | ≤ 5 | ICP-AES | 231 | SG-GC-07.1-2009 |
| Calcium Ca (ppm) | ≤ 5 | ICP-AES | 306 | SG-GC-07.1-2009 |
Typical values — contact us for the latest certificate of analysis.
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