Abstract
With scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS) technique, properties of oxide coatings produced at different voltage on AZ91D Mg alloy substrates by micro - arc oxidation technique have been investigated. Three types of oxide coatings, passive film, micro - spark oxide coating and spark oxide coating were formed corresponding to different range of voltages. The results showed that micro - spark oxide coating exhibited the best performance of compact, homogeneous and with high resistance, comparing with other two types of oxide coatings, due to its high effective thickness.
| Original language | English |
|---|---|
| Pages (from-to) | 267-270 |
| Number of pages | 4 |
| Journal | Journal of the Chinese Society of Corrosion and Protection |
| Volume | 25 |
| Issue number | 5 |
| Publication status | Published - Oct 2005 |
| Externally published | Yes |
Keywords
- Magnesium alloy
- Micro - Arc oxidation
- Property
- Resistance
- Voltage