Titanium Dioxide Ceramics: Properties for Engineering Applications
Introduction
Titanium dioxide ceramics (TiOâ‚‚) are advanced oxide ceramics known for their corrosion resistance, mechanical strength, and electrical properties. These ceramics are ideal for engineering applications in industries such as medical devices and chemical processing. This article details the key properties of titanium dioxide ceramics, supported by a properties table, to highlight their suitability for engineering solutions.
Properties of Titanium Dioxide Ceramics
Titanium dioxide ceramics offer a range of mechanical, electrical, and chemical properties, making them suitable for demanding engineering applications. Below are their primary characteristics:
- High Hardness: Vickers hardness ranges from 13.5 to 14 GPa, ideal for wear-resistant components.
- Mechanical Strength: Flexural strength from 70 to 300 MPa and compressive strength up to 600 MPa, suitable for load-bearing applications.
- Moderate Conductivity: Volume resistivity <10² ohm-cm, useful for specific electronic components.
- Corrosion Resistance: High resistance to chemical attack, perfect for harsh environments.
- Fracture Toughness: Up to 8.5 MPa m¹/², enhancing durability under stress.
Detailed Properties Table
The table below summarizes the properties of titanium dioxide ceramics.
| Property | Value |
| Main Characteristics | |
| Color | White |
| Main Applications | Anti-corrosion parts, medical ceramics |
| Characteristics | High insulation, corrosion resistance |
| Mechanical Properties | |
| Bulk Density (g/cm³) | 3.99–4.0 |
| Vickers Hardness (GPa) | 13.5–14 |
| Flexural Strength (MPa) | 70–300 |
| Compressive Strength (MPa) | Up to 600 |
| Fracture Toughness (MPa m¹/²) | 8.5 |
| Electrical Properties | |
| Volume Resistivity (ohm-cm, 20°C) | <10² |
Table Notes:
- Mechanical Properties: High hardness (13.5–14 GPa) and fracture toughness (8.5 MPa m¹/²) ensure wear resistance and crack resistance.
- Electrical Properties: Moderate conductivity (<10² ohm-cm) supports specific electronic applications.
- Chemical Resistance: High corrosion resistance ensures durability in aggressive environments.
Conclusion
Titanium dioxide ceramics offer robust mechanical strength, corrosion resistance, and moderate electrical conductivity, making them ideal for engineering applications in medical devices and chemical processing. Their properties enable reliable performance in demanding environments.
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