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1) ZKS-1: Reaction bonded (self-combine) SIC
2) ZKS-2: Self sintered pressure less SIC (SSIC)
3) ZKS-3AZKS-3B: SIC with 5 - 30% graphite content
4) ZKS-4: SIC with controlled porosity
|
| ZKS-1 | ZKS-2 | ZKS-3 AB | ZKS-4 |
| SiC Purity(%) | ≥90 | ≥ 98 | Graphite content | Control porosity |
| Granuliform(um) | 8~20 | 4~10 | ≤10 | |
| Density(g/cm3) | ≥3.05 | ≥ 3.10 | 2.65~2.90 | 2.65 |
| Hardness | HRA >90 | HV2800 | HRA >80 | HV 1800 |
| 3 point bending strength (Mpa) | 350~450 | 400~500 | 250~300 | 200~250 |
| Compressive strength(Mpa) | > 2500 | >2500 | >1500 | 1500 |
| fracture Toughness |
| 3.50~4.60 |
|
|
| Modulus of elasticity (GPa) | >350 | 380~410 | 200 | 250 |
| Thermal conductivity (Cal/cm.s.0c) | 0.3 | 0.2 |
|
|
| Coefficient of thermal expansion(mm/mm0k) | 4.5 | 4.2~5.2 | 3.0 | 3.5~4.0 |
silicon carbide ceramics
