Research Article
Effect of Doping Metals on the Structure of PEO Coatings on Titanium
Table 3
Specific electrical resistance and thermal stability of oxides [
23].
| | Metal | Oxide | Specific electrical resistance ρ (Ω·cm) at 293 K | Thermal stability |
| | Mo | MoO2 | 8.8·10−5 metallic conductivity | T > 2100
3MoO2 → Mo + 2MoO3 | | MoO3 | 104–108 semiconductor | — |
| | W | WO2 | 3·10−3p-type semiconductor | T > 2150
3WO2 → W + 2WO3 | | WO3 | 103–105 semiconductor | At a temperature above 1098 K sublimes |
| | V | VO2 | 8·10−4n-type semiconductor | — | | V2O5 | 4·10−3n-type semiconductor | 1000–1550 K
2V2O5 → 4VO2 + O2 (V6O13) |
| | Zr | ZrO2 | 1013 dielectric | — |
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