Silicon nitride irregular parts

Silicon nitride shaped parts product introduction:

Silicon nitride shaped parts are high-performance structural ceramics made of silicon nitride (Si₃N₄) material, possessing the following core characteristics:

1. Superior mechanical properties: Bending strength >800 MPa (up to 1000 MPa or more), fracture toughness >6 MPa·m¹/², effectively resisting impact loads and crack propagation.

2. High hardness and wear resistance: Vickers hardness reaches Hv 1400-1600, suitable for high-wear environments.

3. Excellent thermal properties: Coefficient of thermal expansion ~3.2×10⁻⁶/K, thermal conductivity 20-30 W/m·K, excellent thermal shock resistance.

4. Chemical stability: Resistant to most acids, alkalis, and molten metal corrosion; oxidation resistance temperature can reach above 1200℃.

5. Low density: Approximately 3.2-3.3 g/cm³, contributing to lightweight equipment.

Technical Parameters

 Application Fields

1. Mechanical field: Bearing balls, valves, pipes, grading wheels, etc., especially suitable for high-speed machine tool spindles and aerospace engines.

2. Semiconductor field: Wafer carriers, power module substrates, possessing high thermal conductivity and a thermal expansion coefficient that matches the chip.

3. New energy vehicles: Motor bearings, capable of withstanding operating temperatures of 300-500℃, with a friction coefficient of only 0.01-0.02.

4. Industrial kiln furniture: Superior thermal shock resistance compared to alumina ceramics, extending service life by 30%-50%.

5. High-temperature wear-resistant components: Such as ceramic turbine blades and high-temperature furnace internal components.