Dayoo Advanced Ceramic Co.,Ltd
Dayoo Advanced Ceramic Co.,Ltd
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High-Purity Ceramic Nozzles For High-End Industrial Applications Near-Full Density Ultra-High Strength And Extended Service Life
This product is manufactured using 99.5% high-purity silicon nitride (Si₃N₄) powder through 200MPa isostatic pressing and 1800°C gas pressure sintering (GPS) processes. The manufacturing technology ensures an ultra-dense microstructure with porosity <0.5%, making it an ideal choice for high-end industrial applications.
Aviation industry: Fuel injection systems for aircraft engines
Energy equipment: Combustion chamber nozzles for gas turbines
Automotive manufacturing: High-pressure common rail injection systems
Industrial spraying: HVOF (High-Velocity Oxygen Fuel) spraying
3D printing: Metal powder atomization systems
✓ Ultimate density: Near-full density achieved (relative density ≥99.5%)
✓ Ultra-high strength: Flexural strength ≥700MPa
✓ Exceptional temperature resistance: Continuous use at 1600°C
✓ Superior thermal shock resistance: Withstands 1000°C thermal gradients
✓ Extended service life: 2-3 times longer than conventional sintering products
| Parameter | Specification |
|---|---|
| Material Purity | Si₃N₄≥99.5% |
| Forming Process | 200MPa Isostatic Pressing |
| Sintering Process | 1800°C Gas Pressure Sintering |
| Relative Density | ≥99.5% |
| Flexural Strength | ≥700MPa |
| Fracture Toughness | ≥7.5MPa·m¹/² |
| Maximum Service Temp | 1600°C |
| CTE | 3.2×10⁻⁶/°C |
Material preparation: Nano-grade Si₃N₄ powder (D50≤0.5μm) + sintering additives
Pre-forming: Cold Isostatic Pressing (CIP) 200MPa for 30min
Gas pressure sintering: 1800°C nitrogen atmosphere, 4h dwell time
Precision machining: 5-axis CNC precision grinding
Quality inspection: X-ray density testing + ultrasonic flaw detection
Performance testing: Three-point bending test + thermal shock test
⚠️ Installation: Use ceramic-specific installation tools
⚠️ Pressure limit: Operating pressure ≤80MPa
⚠️ Temperature control: Heating rate ≤5°C/min (above 1000°C)
⚠️ Media requirements: Avoid HF and molten alkali metals
Technical support: Free CFD analysis provided
Customization: Special bore sizes and angles available
After-sales response: 24-hour technical consultation
Q: Advantages of GPS vs conventional sintering?
A: 2-3% higher density, 20%+ strength improvement, 2-3x longer lifespan.
Q: Maximum machinable bore size?
A: Standard max 50mm, special process up to 80mm.
Q: Performance in reducing atmospheres?
A: Stable below 1600°C, recommended with protective atmosphere.
