Abstract
As an alternative to chromating of electroplated zinc a new treatment has been developed. The composition of the treatment solution (molybdate/phosphate ratio), the temperature and duration of the treatment were optimised using the Taguchi statistical planning and evaluating the corrosion resistance obtained in the various conditions by simultaneous CMT (Corrosion Measurements by Titration) and EC (Electrochemical Measurements).
Protective layers formed on zinc and also on cathodically polarised electroless nickel were analysed by Auger analysis. The Mo/P ratio is higher in the protective layer than in the treatment solution, and molybdenum is apparently present in a low oxidation state.
Protective layers formed on zinc and also on cathodically polarised electroless nickel were analysed by Auger analysis. The Mo/P ratio is higher in the protective layer than in the treatment solution, and molybdenum is apparently present in a low oxidation state.
| Original language | English |
|---|---|
| Title of host publication | Modifications of Passive Films |
| Editors | Marcus P. |
| Number of pages | 3 |
| Publisher | CRC Press |
| Publication date | 1993 |
| ISBN (Electronic) | 9781003422037 |
| Publication status | Published - 1993 |
| Event | European Symposium on Modification of Passive Films - Paris, France Duration: 15 Feb 1993 → 17 Feb 1993 |
Conference
| Conference | European Symposium on Modification of Passive Films |
|---|---|
| Country/Territory | France |
| City | Paris |
| Period | 15/02/1993 → 17/02/1993 |
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