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Silicon Nitride Ceramic Structural Parts Manufacturer & Supplier - Céramique JiFeng

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  4. Silicon Nitride Ceramic Structural Parts
Silicon Nitride Ceramic Structural Parts
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Silicon Nitride Ceramic Structural Parts

Nitrure de Silicium (Si₃N₄) Ceramic is a benchmark high-performance structural ceramic. Produced via Reaction Bonding (RBSN) or Gas Pressure Sintering (GPS), it offers extreme environmental resistance, ultra-high strength, dureté, self-lubrication, and light weight. It is widely used in aerospace, new energy, automotive, semi-conducteur, médical, and industrial equipment as a premium replacement for metal parts.

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  • Détails du produit
  • Spécifications techniques

Core Advantages

Extreme environmental resistance: Long-term working temperature 1300°C; thermal shock resistance ΔT ≥ 800°C.

Ultra-high strength & dureté: Bending strength ≥ 800 MPa; fracture toughness 6–8 MPa·m¹ᐟ², better impact resistance than zirconia.

Self-lubricating & wear-resistant: Friction coefficient ≤ 0.15 (dry); hardness HV10 1400–1600; service life >10× metal parts.

Lightweight & energy-saving: Densité 3.2 g/cm³; 60% lighter than steel, reducing inertia and energy consumption.

Custom Applications

  1. Aérospatial & Military

Turbine blades, nozzle throat inserts; short-term temp 1600°C, ablation resistant.

Radome: high wave transmittance (εᵣ=7.5), high temp & salt spray resistant.

  1. New Energy & Automobile

Fuel cell bipolar plates: H₂ permeability ≤1×10⁻⁹ cm³/s; conductivity ≥10 S/cm.

EV bearing balls: self-lubricating, oil-free, service life ≥1,000,000 km.

  1. Semi-conducteur & Precision Machining

Vacuum chamber components: hermeticity ≤1×10⁻⁹ Pa·m³/s; plasma erosion resistant.

Ceramic cutting tools: for titanium alloy, nickel-based alloy finishing.

  1. Médical & Industrial Equipment

Artificial joint balls: ISO 13485 biocompatible; service life ≥20 years.

High-temperature bearing rings: acid/alkali/solvent resistant for chemical pumps.

ParameterDetails
Pureté du matériau≥99.5% Si₃N₄
Densité3.2–3.3 g/cm³
DuretéHV10 1400–1600
Bending Strength≥800 MPa (4-point bending, RT)
CTE (20–1000°C)3.2×10⁻⁶/°C
Machining AccuracyDimensional tolerance ±0.005 mm
CertificationsISO 9001 a

 

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