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Cemented Carbide
Silicon nitride ceramic Si3N4
Product Details
Silicon nitride ceramic (Chemical formula: Si₃N₄) is a high-performance advanced ceramic material composed of silicon (Si) and nitrogen (N) elements bonded together via covalent bonds.
Outstanding mechanical performance
High strength and high hardness ， The hardness at room temperature can reach Hv 1400–1800, and the flexural strength exceeds 1000 MPa. Excellent fracture toughness (5–7 MPa·m¹/²), significantly higher than that of conventional ceramics, with excellent impact resistance;
Low density (3.2–3.4 g/cm³), about 60% lighter than steel, enabling lightweight design.
Extreme environmental stability
High-temperature resistance It retains 80% of its strength even at 1200℃, and its maximum service temperature reaches 1400℃.
Thermal shock resistance Low thermal expansion coefficient (3.2×10⁻⁶/K) and high thermal conductivity (30 W/m·K), with resistance to rapid temperature changes;
Chemically inert Resistant to acid and alkali corrosion, as well as erosion by molten metals (such as aluminum and zinc).
Friction and Insulating Properties
Self-lubricating It has a low coefficient of friction (0.02–0.1) and a wear-resistant lifespan that is more than 10 times longer than that of metals.
High resistivity (10¹³–10¹⁴ Ω·cm), suitable for high-voltage electrical insulation applications.
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