This new technology is a processing method whereby two or more green bodies are stacked, sintered, and bonded together into a monolithic body. Since the interfaces of the green bodies are sintered, it makes a dense boundary. The strength of bonded parts ends up equivalent to the bulk parts.
Machine the pre-sintered green bodies. Align the surfaces where the bonding agent is applied, and bond by sintering under load. Then grind to the final shape.
Complex internal shapes that are impossible to grind with tools from the outside are possible. In addition, some shapes which were conventionally achieved by machining a large portion of bulk body, for example, shapes with protrusions, can be formed by bonding, which will prevent material loss and will also reduce production time.
Φ160 x 95t (mm)
Φ100 x 20t (mm)*Cut model for reference of internal structure.
Φ200 x 200 x 30t (mm)
60 x 40t (mm)
Ceramics at bonding boundary also become dense.
| Material Material Code |
Alumina | Cordierite | Silicon Carbide | |||
|---|---|---|---|---|---|---|
| AO479M | CO220O | SC120O | ||||
| Color | - | Ivory | Gray | Black | ||
| Density | g/cm3 | 3.9 | 2.5 | 3.15 | ||
| Mechanical Characteristics | Vickers Hardness HV9.807N | GPa | 15.7 | 8.0 | 23.0 | |
| Flexural Strength (3-point Bending) | MPa | 370 | 190 | 500 | ||
| Young’s Modulus | GPa | 370 | 140 | 430 | ||
| Poisson’s Ratio | - | 0.23 | 0.31 | 0.16 | ||
| Thermal Characteristics | Coefficient of Linear Thermal Expansion | 40-400℃ | × 10-6/K | 7.2 | (*) 1.5 | 3.7 |
| 40-800℃ | 8.0 | (*) 2.1 | 4.4 | |||
| Thermal Conductivity | 20℃ | W/ (m・K) | 32 | 4 | 190 | |
| Specific Heat Capacity | J/ (g・K) | 0.78 | 0.71 | 0.67 | ||
(*) <|0.05|(23℃)、<|0.02|(22℃)
Green Bonding processes of Cordierite and Silicon Carbide are under development. Please feel free to contact us for more details.
Values are based on typical material properties and
may vary according to product configuration and manufacturing process.
