|
| Electrochemical Study on Effects of Si Contents on the Corrosion Resistance of Low Alloy Steels to Sea Water |
| Received:September 17, 2015 Revised:April 15, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2016.02.020 |
| KeyWord:Si low alloy steel electrochemical properties sea water corrosion |
| Author | Institution |
| TIAN Jun |
Naval University of Engineering，Wuhan ，China |
| LI Guo-ming |
Naval University of Engineering，Wuhan ，China |
| CHEN Shan |
Naval University of Engineering，Wuhan ，China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To study the effect of Si on the resistance of low alloy steel to sea water corrosion by electrochemical methods. Methods Low alloy steels with different mass fractions of Si were smelted by vacuum arc furnace. The corrosion resistance of the steel in sea water was evaluated by polarization tests. The corrosion resistance of the rust layer after full immersion was studied by linear polarization test and EIS test. The composition of inclusions was studied by scanning electron microscopy (SEM) and energy dispersive analysis of X-ray (EDAX). Results The experiment results indicated that when the Si content was less than 0.9%, the uniform corrosion rate increased with the increase of Si content; when the Si content was more than 0.9%, the corrosion rate decreased with increasing content of Si; the corrosion resistance of the steel decreased as the time of immersion prolonged. Conclusion When the Si content was 0.9%, the steel had the best corrosion resistance; the protection ability of rust layer was limited. |
| Close |