The ceramic rods for cameras are very small and made by zirconia ceramic, using advanced ceramic materials. These materials offer several distinct advantages that make them ideal for use in cameras.
Zirconia rods feature:
- Coefficient of thermal expansion similar to iron
- High strength&hardness
- High fracture toughness
- Wear resistance
- Excellent thermal insulation
- Very high resistance to crack propagation, high fracture toughness
- Low thermal conductivity
- Corrosion resistance in acids and alkalis
- Modulus of elasticity similar to steel
Zirconia rods material properties:
| Properties | Unit | Value |
| Composition | % | 94.5% ZrO2 5.5% Y2O3 |
| Specific Density | g/cm3 | ≥6.03 |
| Hardness (HV) | GPa | >12 |
| Coefficient (20-400°C) | 10-6 /k | 9.6 |
| Elastic Modulis | GPa | 205 |
| Fracture Toughness | MPa·m1/2 | 8-10 |
| Crushing Load | KN | ≥25 (S ⊄6.5mm) |
| Grain Size | μm | <0.5 |
| Thermal Conductivity | w/(m·k) | 3 |
