Silicon nitride ceramic wheel

Features

1. High hardness and wear resistance: Vickers hardness reaches 1600-1800 HV, second only to a few superhard materials, effectively resisting scratches and abrasive wear.
2. Excellent thermal stability: Long-term operating temperature can reach over 1200℃, with a low thermal expansion coefficient (3.1-3.2×10⁻⁶/K), maintaining good dimensional stability under temperature changes.
3. High mechanical strength: Bending strength of 800-1200 MPa, fracture toughness of 6-8 MPa·m¹/², able to withstand considerable mechanical stress.
4. Chemical stability: Strong resistance to most acid and alkali solutions, suitable for corrosive environments.
5. Low density and lightweight: Density is approximately 3.2 g/cm³, only 40% of steel, reducing equipment weight.
6. Electrical insulation: Resistivity of 10¹⁴-10¹⁶ Ω·cm, dielectric strength up to 20 kV/mm.