| Sintering additive | T (˚C) wt% | 0.1 | 1 | 3 |
| CaCl2 | 900 | 0.85 | 0.85 | 0.86 |
| 1000 | 0.93 | 0.94 | 0.96 | |
| MgCl2 | 900 | 0.87 | 0.88 | 0.87 |
| 1000 | 0.94 | 0.95 | 0.96 | |
| CaF2 | 900 | 0.87 | 0.83 | 0.84 |
| 1000 | 0.96 | 0.95 | 0.94 |