Phosphate Impregnation Applications
Graphite will oxidize in the atmosphere above 400°C. After phosphate immersion treatment, it can be raised to above 700°C before it begins to oxidize. This process is widely used in the steelmaking industry.
Phosphate impregnation
| Proerty | values | PK-3 | HLM | E+20 | G-330 | R-8340 |
| Density | g/cm3 | 1.72 | 1.74 | 1.81 | 1.79 | 1.72 |
| Grain Size | μm | 2 | 0.8 | 11 | 12 | 15 |
| Hardness | HSD |
78 |
- |
65 |
56 |
80 |
| Young's mouldus | GPa | - | 10 | 11.5 | 9.8 | 10.5 |
| Flexural Strength |
Mpa |
14 | 18 | 52 | 39.2 | 45 |
| Electrical Resistivity |
μΩm |
8~9 | 8.5 | 12.4 | 13 | 12 |
| Thermal expension | x10-6K-1 | - | 2.6 | 5.3 | 4.8 | 2.9 |
|
Thermal conductivity |
Wm-1K-1 | - | 150 | 104 | 104 | 90 |
