Table 2.
Mechanical parameters of four types of different coating layers.
| Materials | E (GPa) | ν | α(1/K) × 106 |
|---|---|---|---|
| SiO2 | 73 | 0.17 | 0.55 |
| Al2O3 | 300 | 0.21 | 8.1 |
| Ta2O5 | 140 | 0.23 | 3.6 |
| Nb2O5 | 60 | 0.20 | 5.8 |
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