99.9% Pure Silicon Nitride Ceramics | High-Performance Si₃N₄ Components & Powders

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Silicon Nitride (Si₃N₄) is an engineered ceramic with 99.9% purity, offering unmatched thermal stability (>1800°C), corrosion resistance, and mechanical strength. Ideal for mission-critical applications in harsh environments.

Grade A 99.9% pure Silicon Nitride (Si₃N₄) for aerospace, medical & industrial applications. Extreme thermal shock resistance (ΔT>1000°C), low density, bio-inert. Custom components & powders.

Why Silicon Nitride?

Silicon Nitride (Si₃N₄) outperforms metals and standard ceramics with:

99.9% chemical purity
Zero ductility at 1800C
Thermal shock resistance (survives 1000°C→water quenching)
Bio-inert certification (ISO 6474)

Performance Specifications

Property	Value Range
Purity	≥99.9% Si₃N₄
Density	3.20-3.35 g/cm³
Flexural Strength	600-1000 MPa
Fracture Toughness	5.5-7.5 MPa√m
Thermal Expansion	2.5-3.5 ×10⁻⁶/K (RT-1000°C)

Product Forms

Precision Components:
- Bearings balls (G5-G10 grade)
- Cutting tool inserts (SNGX/SNMA)
- Semiconductor wafer chucks
Raw Materials:
- Submicron powders (α-phase >90%)
- Reaction-bonded (RBSN) blanks
- Hot isostatically pressed (HIP) billets

Industry-Specific Solutions

Energy & Turbomachinery:
- Turbine blades & vanes (1400°C operational)
- Fuel cell stack plates
Advanced Automotive:
- Turbocharger rotors
- Glow plugs for diesel engines
Medical Technology:
- Dental implant abutments
- Orthopedic spinal fusion devices
Industrial Wear Parts:
- Molten metal handling nozzles
- Shot blast nozzles (10x steel lifespan)
Electronics:
- High-power IC substrates
- Plasma etch components

Technical Advantages

Weight Reduction: 60% lighter than steel bearings
Dielectric Strength: 15 kV/mm for insulators
Corrosion Immunity: Resists HF, molten Al, salts
Fatigue Resistance: >10⁷ cycles at 800 MPa stress