ruAlumina-based structural ceramics
Description
Adequate strength, high hardness and good fracture toughness of alumina-based ceramics contribute to high wear-resistance of the alumina-based IFCIs. Combination of wear resistance, high-temperature stability, and low deformability make alumina IFCIs good candidates for high-speed machining operations.
Applications
Hardened, tool steels
Chilled cast iron
Refractory alloys
Grey, malleable, high-strength cast iron grades
Physical and mechanical parameters
| Parameter | Material | ||
| Composite alumina-YSZ ceramics | mixed ceramics
| ||
| Density, g/cm³ | 4,04 - 4,05 | 4,60 - 4,65 | 4,32 - 4,34 |
| Transverse rupture strength, MPa | 550 - 700 | 850 - 1200 | 650 - 850 |
| Young modulus, GPa | 365 - 375 | 310 - 340 | 390 - 410 |
| Vickers’ hardness, GPa | 19 - 21 | 17 - 18 | 21 - 23 |
| Impact toughness, kJ•mˆ(-2) | 4,0 - 5,0 | 6,0 - 8,0 | 5,5 - 7,0 |
| Thermal conductivity, W mˆ(-1) x Кˆ(-1) | 27 - 29 | 20 - 22 | 23 - 25 |
| Coefficient of thermal expansion (CTE), 10ˆ(-6) x Кˆ(-1) | 8,0 - 8,2 | 8,5 - 9,5 | 8,8 - 9,2 |