물성표
| 구분 | Si₃N₄(D-200) | Graphite | SiC |
|---|---|---|---|
| Density | 3.24 | 1.9 | 3.16 |
| Water Absorption | < 0.1 | 6 | > 0.1 |
| Bending Strength | 1,063(at 25℃) 1,188(at 600℃) 1,038(at 800℃) |
54 | 450 |
| Copm. Strength | 2,478 | 158 | - |
| Fracture Toughness | 7.3 | - | 3.0 |
| Hardness | 18.4 | 90(Shore) | 23 |
| Thermal Expansion Coefficient | 2.56(at 400℃) 3.17(at 800℃) |
4.8 | 3.7(at 400℃) 4.4(at 800℃) |
| Thermal Shock Resistance | > 800 | - | 400 |
| Heat Oxidation Resistance | Good | Poor | Good |
도면
시험성적서
