Silicon Nitride Ceramic Block with Low Friction Coefficient High Tensile Strength and High Compressive Strength for High-Temperature Applications

The Silicon Nitride Ceramic Block is a rectangular parallelepiped industrial ceramic component manufactured using advanced ceramic processes. Renowned for its exceptional mechanical properties, thermal stability, and chemical inertness, it serves as an ideal replacement for metals and other ceramics in extreme environments.

This product is made from high-purity silicon nitride powder through precise forming and high-temperature sintering, resulting in a dense and homogeneous microstructure. The surface is typically precision-ground, presenting a flat, smooth, matte finish with precise dimensions and sharp edges, ensuring superior stability and reliability when used as a structural or functional component.

• Semiconductor Manufacturing Equipment: Used as insulating jigs, carriers, and heater plates in etching machines and diffusion furnaces due to high purity, low metallic contamination, and excellent insulation.
• High-Temperature Industrial Furnaces: Serve as setters, support blocks, and guide rails within kilns, withstanding extreme temperatures and mechanical loads, offering a much longer lifespan than metals.
• Precision Machinery & Automation: Used as structural substrates and guide rails for high-precision measuring instruments and laser equipment, providing a stable platform with high rigidity and low thermal expansion.
• Chemical & Energy Sector: Act as corrosion-resistant and wear-resistant sealing rings, valve plates, or reactor linings.
• Research & Defense: Applied in special windows, armor, or structural components requiring lightweight, high hardness, and impact resistance.

• High Strength & Hardness: Possesses very high flexural strength and Vickers hardness, offering outstanding wear resistance and long service life.
• Superior Thermal Shock Resistance: Low coefficient of thermal expansion and good thermal conductivity enable it to withstand severe thermal cycling without cracking, outperforming zirconia ceramics.
• Excellent Corrosion Resistance: Highly resistant to most strong acids and alkalis, suitable for harsh chemical environments.
• Low Density & Electrical Insulation: Lightweight, contributing to equipment weight reduction; maintains excellent electrical insulation properties even at high temperatures.
• Good Machinability (Green State): In its pre-sintered "green" state, it can be machined (turned, milled, drilled) to create complex shapes.

The production of Silicon Nitride Ceramic Blocks follows a rigorous, precision-oriented process: Raw Material Preparation & Milling → Dry Pressing/Isostatic Pressing → CNC Green Machining → Debinding & Gas Pressure Sintering → Precision Surface Grinding & Chamfering → Non-Destructive Testing (Ultrasonic Inspection) → Cleaning & Packaging. Gas Pressure Sintering is the core step for achieving a high-density body.

• Installation & Fixing: Ensure contact surfaces are clean and flat during installation. When using bolts for fixation, it is recommended to use elastic washers to buffer stress and avoid localized stress concentration.
• Avoid Hard Impact: Despite high strength, ceramics are brittle materials. Avoid impacts or dropping from height.
• Mating Materials: Materials used in conjunction with it should have a similar coefficient of thermal expansion or appropriate flexibility to minimize thermal stress.
• Cleaning & Maintenance: Can be cleaned using organic solvents or neutral detergents with ultrasonic cleaners. Avoid using highly corrosive chemicals like hydrofluoric acid and hot concentrated phosphoric acid.

We provide comprehensive technical consultation and after-sales support, including product selection guidance, custom-size manufacturing, and application problem-solving. All products undergo strict quality inspection before shipment and are supplied with material certification and test reports.