Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening
Corrosion properties of an aluminium alloy 7000 series were investigated by different electrochemical methods. The alloy was subjected to the one-step and to a new two-step precipitation hardening. Polarization measurements in the 3.5 wt. % NaCl solution have shown a more positive value of the pitti...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Engineering Society for Corrosion, Belgrade
2014-12-01
|
| Series: | Zaštita Materijala |
| Subjects: | |
| Online Access: | https://www.zastita-materijala.org/index.php/home/article/view/905 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Corrosion properties of an aluminium alloy 7000 series were investigated by different electrochemical methods. The alloy was subjected to the one-step and to a new two-step precipitation hardening. Polarization measurements in the 3.5 wt. % NaCl solution have shown a more positive value of the pitting potential (Epit) and a higher corrosion resistance for the two-step aged alloy. The electrochemical impedance spectroscopy (EIS) has also shown that the two-step aged alloy has better corrosion properties (higher value of polarization resistance, Rp, and lower value of double-layer capacitance, Cdl) comparing to the one-step aged alloy. |
|---|---|
| ISSN: | 0351-9465 2466-2585 |