Silicon Nitride Powder (Si3N4)
Silicon Nitride Powder (chemical formula Si3N4) is an inorganic compound made from silicon and nitrogen. It is a ceramic material with particularly excellent mechanical, thermal, and chemical properties.
Features
- High Strength & High Hardness
- Silicon nitride is extremely hard and has excellent wear resistance.
- Heat Resistance
- It can maintain its mechanical properties even at high temperatures, therefore it is used as a heat-resistant material.
- Lightweight
- Due to its low specific gravity, it is gaining attention as a lightweight and resilient material.
- Corrosion Resistance
- It is resistant to acids and alkalis, and has high chemical stability.
- Low Thermal Expansion Coefficient
- It has little thermal expansion and strong resistance to thermal shock.
General Uses
- Ceramic cutting tools
- High-load parts for automobile engines
- High-performance parts for machinery
- Bearing parts such as high-precision balls
- SiAlONs
- Metallurgical applications (thermocouple protection tubes, stoke tubes, crucibles)
- Chemical engineering applications such as heat exchangers
- Functional parts for textile machinery
- Applications for LED
- Release agents in silicon ingot manufacturing
CF-1A High Purity Silicon Nitride Powder
| Test item | Unit | Index range | Testing equipment or method |
|---|---|---|---|
| a phase | % | ≥93 | X-ray diffractometer JC/T 2342-2015 |
| Fe | ppm | ≤1500 | Atomic absorption method ISO10058-3:2008 |
| AI | ppm | ≤900 | |
| Ca | ppm | ≤900 | |
| N | % | ≥38 | Kjeldahl nitrogen apparatus GB/T 16555-2017 |
| Free Si | % | <0.4 | Gas volumetric method GB/T 16555-2017 |
| C | % | ≤0.15 | High frequency infrared carbon analyzer GB/T 16555-2017 |
| D50 | μm | ≤0.75 | Laser particle size analyzer GB/T 19077-2016 |
| O | % | ≤2.0 | Inertgas pulse infrared thermal conductivity method GB/T 16555-2017 |
CF-B High Purity Silicon Nitride Powder
| Test item | Unit | Index range | Testing equipment or method |
|---|---|---|---|
| a phase | % | ≥90 | X-ray diffractometer JC/T 2342-2015 |
| Fe | ppm | ≤1800 | Atomic absorption method ISO10058-3:2008 |
| AI | ppm | ≤900 | |
| Ca | ppm | ≤900 | |
| N | % | ≥37.5 | Kjeldahl nitrogen apparatus GB/T 16555-2017 |
| Free Si | % | <0.2 | Gas volumetric method GB/T 16555-2017 |
| C | % | ≤0.15 | High frequency infrared carbon analyzer GB/T 16555-2017 |
| D50 | μm | ≤0.68 | Laser particle size analyzer GB/T 19077-2016 |
| O | % | ≤3.0 | Inertgas pulse infrared thermal conductivity method GB/T 16555-2017 |
CF-HJ High Purity Silicon Nitride Powder
| Test item | Unit | Index range | Testing equipment or method |
|---|---|---|---|
| a phase | % | ≥90 | X-ray diffractometer JC/T 2342-2015 |
| Fe | ppm | ≤200 | Atomic absorption method ISO10058-3:2008 |
| AI | ppm | ≤200 | |
| Ca | ppm | ≤200 | |
| N | % | ≥38.5 | Kjeldahl nitrogen apparatus GB/T 16555-2017 |
| Free Si | % | <0.2 | Gas volumetric method GB/T 16555-2017 |
| C | % | ≤0.1 | High frequency infrared carbon analyzer GB/T 16555-2017 |
| O | % | ≤1.4 | Inertgas pulse infrared thermal conductivity method GB/T 16555-2017 |
| D50 | μm | ≤0.9 | Laser particle size analyzer GB/T 19077-2016 |
CF-HQ High Purity Silicon Nitride Powder
| Test item | Unit | Index range | Testing equipment or method |
|---|---|---|---|
| a phase | % | ≥93 | X-ray diffractometer JC/T 2342-2015 |
| Fe | ppm | ≤500 | Atomic absorption method ISO10058-3:2008 |
| AI | ppm | ≤300 | |
| Ca | ppm | ≤300 | |
| N | % | ≥38.5 | Kjeldahl nitrogen apparatus GB/T 16555-2017 |
| Free Si | % | <0.3 | Gas volumetric method GB/T 16555-2017 |
| C | % | ≤0.12 | High frequency infrared carbon analyzer GB/T 16555-2017 |
| O | % | ≤1.5 | Inertgas pulse infrared thermal conductivity method GB/T 16555-2017 |
| D50 | μm | ≤0.9 | Laser particle size analyzer GB/T 19077-2016 |
CF-K High Purity Silicon Nitride Powder
| Test item | Unit | Index range | Testing equipment or method |
|---|---|---|---|
| a phase | % | ≥20 | X-ray diffractometer JC/T 2342-2015 |
| Fe | ppm | ≤5000 | Atomic absorption method ISO10058-3:2008 |
| AI | ppm | ≤2500 | |
| Ca | ppm | ≤2500 | |
| N | % | ≥38 | Kjeldahl nitrogen apparatus GB/T 16555-2017 |
| C | % | 0.15 | High frequency infrared carbon analyzer GB/T 16555-2017 |
| O | % | <1.0 | Inertgas pulse infrared thermal conductivity method GB/T 16555-2017 |
| D50 | μm | 5-10 | Laser particle size analyzer GB/T 19077-2016 |
CF-SN High Purity Silicon Nitride Powder
| Test item | Unit | Index range | Testing equipment or method |
|---|---|---|---|
| Fe | ppm | ≤5 | ICP-OES GB/T 30902-2014 |
| AI | ppm | ≤5 | |
| Ca | ppm | ≤5 | |
| Mn | ppm | ≤5 | |
| Cu | ppm | ≤5 | |
| N | % | >39 | Kjeldahl nitrogen apparatus GB/T 16555-2017 |
| C | % | ≤0.2 | High frequency infrared carbon analyzer GB/T 16555-2017 |
| D50 | μm | 2 | Laser particle size analyzer GB/T 19077-2016 |
| O | % | ≤1.0 | Inertgas pulse infrared thermal conductivity method GB/T 16555-2017 |