Property
Ceramics is a material with high abrasion resistance and excellent low wear coefficient. Alumina ceramics is a typical ceramics with high hardness, on the other hand, zirconia ceramics has a extreme hardness and toughness as well.
As ceramics is able to form a designated shape by sintering, it is possible to make a deep hole with high precision (Depth: 10 x hole diameter) by processing pipe materials. Furthermore, it is also possible to process complexed shapes and to polish up flat surface and outer surface of cylinder.
Processed examples
Alumina ceramics
| Composition |
Al2O3 |
| Structure |
Sintered compact |
Mechanical property
※Value for reference |
Tensile strength: 0.12 to 0.21GPa
Bending strength: 0.2 to 0.7GPa
Compressive strength: 2.5 to 4.4GPa
Young’s modulus: 260 to 380GPa
Hardness: HV 1,000 to 2,300 |
| Feature |
Alumina ceramics is a typical ceramics with high hardness.
Excellent insulating property.
Excellent low wear coefficient. |
Zirconia ceramics
| Composition |
ZrO2 |
| Structure |
Sintered compact |
Mechanical property
※Value for reference |
Tensile strength: 0.14GPa
Bending strength: 0.8 to 1.7GPa
Compressive strength: 2.9 to 3.9GPa
Young’s modulus: 180 to 220GPa
Hardness: HV 1,200 to 1,500 |
| Feature |
Zirconia ceramics has a high hardness with toughness.
Excellent insulating property.
Excellent low wear coefficient. |
Processing
Alumina ceramics
Half-cutting picture of a deep hole
- Circularity of hole: 0.7μm
Diameter of hole: polishing withφ0.21mm × 11.5mmL
Diameter of hole: Processing with range5μm（φ0.21 to φ0.215mm）
Polishing deep hole of alumina ceramics
- Hole diameterφ0.2135 Circularity 0.7μm
Zirconia ceramics
Guide of zirconia ceramics(Half cutting picture)
- Tapered V surface: Polish up
- Tapered surface roughness: Ra0.0173μm
Zirconia ceramics inner surface polish
- Surface roughness Ra0.0173μm
Examples of uses