Density: 5.9-6.0 g/cm³.
Hardness: 8.8-9.0 Mohs hardness.
Flexural strength: ≥1200 MPa.
Compressive strength: 2500 MPa.
Temperature resistance: 2200℃.
Coefficient of thermal expansion: 10 × 10⁻⁶/℃.
Thermal conductivity: 2.5 W/m·K.
Surface roughness: ≤0.02 μm (Ra value).
Ⅰ.Introduction to Zirconia Ceramic Wear-Resistant, Sealed, Polished Semi-Circular Ceramic Products:
Zirconia ceramic wear-resistant, sealed, and polished semi-circular ceramic is a high-performance inorganic non-metallic material product with excellent physical and chemical properties. This product uses zirconia (ZrO₂) as the main raw material and is manufactured into a semi-circular structure through precision machining processes. It is widely used in mechanical seals, bearings, medical devices, and other fields. Its core characteristics include high hardness, high toughness, high wear resistance, high temperature resistance, and corrosion resistance.
Ⅱ.Performance Characteristics:
Superior mechanical properties: Bending strength exceeds 1000 MPa, hardness reaches 8-9 GPa, and it can withstand extremely high pressure, tension, and friction.
Excellent wear resistance: Wear resistance is 15 times that of alumina ceramics, and the friction coefficient is only 1/2 of that of alumina ceramics. After grinding and polishing, the surface finish can reach above ▽9.
Outstanding high-temperature resistance: The melting point is as high as 2700℃, and it can maintain dimensional and structural stability at high temperatures.
Good chemical stability: Strong resistance to most chemical substances, and resistant to acid and alkali corrosion.
Unique biocompatibility: Non-toxic and harmless, with excellent compatibility with human tissues.
Ⅲ.Application Fields
Zirconia ceramic wear-resistant, sealing, and polished semi-circular ceramic products are widely used in the following fields:
1. Industrial Machinery: Sealing rings for petrochemical pumps, bearings, valves, nozzles, etc.
2. Medical Devices: Artificial joints, dental restorations, surgical instruments, etc.
3. Automotive Industry: Oxygen sensors, high-performance brake pads, turbocharger rotors, etc.
4. Aerospace: High-temperature structural components, electronic equipment housings, etc.
5. Electronics and Electrical Appliances: Piezoelectric ceramic components, solid oxide fuel cell electrolyte layers, etc.
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