Silicon nitride positioning block

Silicon Nitride Positioning Block Product Introduction

Silicon nitride positioning blocks are industrial components made from silicon nitride (Si₃N₄) ceramic material, possessing high strength, high hardness, low density, excellent thermal stability, and chemical inertness. They are primarily used for precise positioning and support in extreme working conditions such as high vacuum, high temperature, and highly corrosive environments, ensuring the precise assembly of complex components.

Product Features

1. High Hardness and Wear Resistance: Vickers hardness can reach over Hv1500, and flexural strength exceeds 800 MPa.

2. Excellent Thermal Stability: Can withstand high temperatures of 1200℃, with a low thermal expansion coefficient (approximately 3.2 × 10⁻⁶/℃).

3. Chemical Stability: Resistant to acid and alkali corrosion; the SiO₂ passivation layer formed on the surface enhances oxidation resistance.

4. Mechanical Properties: High fracture toughness (approximately 6-7 MPa·m¹/²), capable of withstanding significant mechanical stress and impact.

5. Low Friction Coefficient: Possesses a certain degree of self-lubrication, reducing friction with other materials.

Application Fields

1. Aerospace: Precision positioning in high-temperature and high-pressure environments, ensuring the safety of aircraft components.

2. Automotive Manufacturing: High-strength assembly of critical components such as engines and transmissions.

3. Precision Machinery: Long-term stable operation of automated equipment and production lines.

4. Medical Devices: Non-toxic and corrosion-resistant positioning for high-precision surgical instruments.

5. Metallurgical Industry: Components for thermal equipment such as crucibles and burners.

Supports custom specifications.