Abstract
The corrosion resistance of passivated films on electrodeposited Zn-Fe, Zn-Co, Zn-Ni alloys was 2∼4 times higher than that on Zn. Results of XPS and AES showed that all these passive films were composed of CrO 3, Cr 2O 3, Zn(OH) 2, ZnO and H 2O, and the relative contents of CrO 3/Cr 2O 3 and Zn(OH) 2/ZnO were basically the same. The only difference was that the total content of Cr in passivated film on electrodeposited zinc alloys was higher. It led to an integrated and fine protective film, which possessed self-repair ability. In addition, the presence of an iron-group metal enriched layer obstructed the corrosion process.
| Original language | English |
|---|---|
| Pages (from-to) | 45-46 |
| Number of pages | 2 |
| Journal | Journal of the Chinese Society of Corrosion and Protection |
| Volume | 18 |
| Issue number | 1 |
| State | Published - 1998 |
Keywords
- Corrosion resistance
- Electroplating
- Passivation
- Zinc base alloy
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