Silicon nitride separation turbine

Silicon nitride separation turbine Product Introduction:

1. The Silicon nitride separation turbine is a high-performance ceramic component primarily used in automobile and motorcycle engines to overcome the acceleration lag problem of traditional metal turbochargers. Compared to metal turbochargers, its moment of inertia is reduced by approximately 60%, and the response time is reduced by approximately 30% under the same acceleration conditions. It can also withstand higher exhaust temperatures.

Technical Parameters

1. Mechanical Properties:

Hardness: Vickers hardness can reach 14-16 GPa (HV ≥ 1500).

Bending strength: ≥ 800 MPa.

Fracture toughness: 6-8 MPa·m¹/².

Wear resistance: More than 10 times that of ordinary steel.

2. Thermal Properties:

Coefficient of thermal expansion: 3.2 × 10⁻⁶/℃ (close to that of metals).

Thermal conductivity: 20-25 W/m·K.

High-temperature resistance: Can maintain 90% of its room temperature strength at 1200℃.

3. Other Characteristics:

Chemical stability: Strong corrosion resistance to most acid and alkaline media (except hydrofluoric acid and concentrated alkalis).

Coefficient of friction: 0.1-0.3 (with self-lubricating properties).

Density: Only 1/3 of steel, lightweight.

Application Fields

1. Automotive Industry:

Turbocharger rotors, with a 30% improvement in response speed.

Electric vehicle motor bearings, reducing friction loss by 40%.

2. Aerospace: Aircraft engine turbine blades, combustion chamber liners, spacecraft thermal protection systems.

3. New Energy Sector: Hydrogen fuel cell bipolar plate sealing rings, anti-reflective coatings for photovoltaic equipment, direct liquid cooling modules for wind power equipment.