| Sample | time | 650˚C | 700˚C | 750˚C | 800˚C | ||||
| α | EB | α | EB | α | EB | α | EB | ||
| #O2 | 2 h | 6.8 | 24.7 | 7.0 | 21.3 | 7.3 | 23.5 | 7.0 | 23.3 |
| #N2 | 2 h | 6.5 | 23.1 | 6.5 | 23.2 | 7.5 | 23.2 | 7.1 | 21.6 |
| #O2.5 | 2.5 h | 6.5 | 22.4 | 7.3 | 22.6 | 8.1 | 22.7 | 7.5 | 20.5 |
| #N2.5 | 2.5 h | 6.9 | 21.3 | 7.2 | 21.5 | 8.0 | 23.0 | 7.5 | 19.8 |
| #O3 | 3 h | 7.1 | 23.2 | 7.7 | 23.5 | 8.9 | 19.1 | 8.0 | 23.1 |
| #N3 | 3 h | 6.8 | 22.7 | 7.5 | 23.3 | 8.4 | 20.6 | 7.9 | 21.7 |
| #O3.5 | 3.5 h | 7.2 | 21.7 | 7.7 | 21.8 | 7.9 | 21.2 | 7.2 | 21.3 |
| #N3.5 | 3.5 h | 7.1 | 22.0 | 7.4 | 20.2 | 7.8 | 22.4 | 7.4 | 23.4 |
| #O4 | 4 h | 6.7 | 23.3 | 7.0 | 22.5 | 7.4 | 22.0 | 7.2 | 22.8 |
| #N4 | 4 h | 6.8 | 21.8 | 7.3 | 22.8 | 7.2 | 22.4 | 6.9 | 21.9 |