Zirconia Ceramic Products Introduction:
Zirconia ceramics are high-performance ceramic materials primarily composed of zirconium dioxide (ZrO₂), typically white at room temperature, and containing trace amounts of hafnium dioxide (HfO₂) and the stabilizer yttrium oxide (Y₂O₃). Its characteristics include:
1. Physical properties: High melting point (2715℃), high hardness (HV1250), excellent wear resistance and toughness.
2. Toughening mechanism: Phase transformation toughening is achieved through crystal structure transformation (monoclinic phase, tetragonal phase, cubic phase).
3. Chemical stability: Inert in physiological environments and exhibits good biocompatibility.
Manufacturing Process
The main manufacturing processes for zirconia ceramics include:
1. Forming Processes:
Slip casting: Suitable for large components with complex shapes.
Hot pressing: Produces green bodies with precise dimensions and high production efficiency.
Tape casting: Suitable for preparing thin film materials.
2. Machining Processes:
Abrasive machining: Grinding, polishing, and abrasive belt machining.
Plastic deformation machining: Diamond plastic machining.
Chemical machining: Etching, chemical polishing.
Composite machining: ELID grinding, ultrasonic grinding.
Application areas
Due to its excellent properties, zirconia ceramic is widely used in various fields:
Application Scenarios | Specific applications | Advantages and Features |
Medical field | Dental restorations (crowns, bridges, implants), artificial joints, orthopedic implants, surgical instruments | Good biocompatibility, high wear resistance, and a color similar to natural teeth. |
Electronics and Semiconductors | Oxygen sensors, piezoelectric materials, integrated circuit substrates | High-temperature oxygen ion conductivity, high insulation, and low dielectric loss. |
Industrial machinery | Bearings, valves, pump bodies, nozzles, cutting tools, thermal barrier coatings | High temperature resistance (up to 1600℃), corrosion resistance, and high hardness. |
Jewelry | Synthetic gemstones (cubic zirconia), high-end watch components | Brilliant appearance, scratch-resistant, and lightweight. |
Supports custom specifications.
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