Structural ceramics based on silicon nitride
Description
Due to the combination of high strength, hardness and fracture toughness parameters, the silicon nitride-based ceramic IFCIs demonstrate stable and reliable performance in severe roughing operations when high depth of cut and feed rates are used.
Applications
Hardened, tool steels
Chilled cast iron
Refractory alloys
Grey, malleable, high-strength cast iron grades
Physical and mechanical parameters
Parameter | Material on the basis of silicon nitride | ||
with an oxide additives | with titanium nitride | with titanium carbide | |
Density, g/cm³ | 3,24 - 3,26 | 3,75 - 3,77 | 3,35 - 3,37 |
Microstructure | |||
Transverse rupture strength, MPa | 850 - 1050
| 560 - 630
| 550 - 670
|
Young modulus, GPa | 310 - 320
| 310 - 320
| 310 - 330
|
Vickers’ hardness, GPa | 16.0 - 17.5
| 15.5 - 16.2
| 19.0 - 19.5
|
Impact toughness, kJ•mˆ(-2) | 6.0 - 7.0
| 5.5 - 6.0
| 6.0 - 6.5
|
Thermal conductivity, W mˆ(-1) x Кˆ(-1) | 25 - 30
| 25 - 30
| 25 - 30
|
Coefficient of thermal expansion (CTE), 10ˆ(-6) x Кˆ(-1) | 3.0 - 3.2
| 3.2 - 3.4
| 3.2 - 3.4
|