|
| Performance of Aluminium Sacrificial Anodes in Deep Sea |
| Received:February 28, 2019 Revised:April 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.04.006 |
| KeyWord:deep sea environment sacrificial anode electrochemical properties |
| Author | Institution |
| ZHANG Guo-qing |
1. Offshore Oil Engineering Co., Ltd, Tianjin , China |
| QIAN Si-cheng |
1. Offshore Oil Engineering Co., Ltd, Tianjin , China |
| ZHANG Hai-bing |
2. State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao , China |
| LIANG Jian |
1. Offshore Oil Engineering Co., Ltd, Tianjin , China |
| GUO Wei-min |
2. State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao , China |
| XING Shao-hua |
2. State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao , China |
| FAN Lin |
2. State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To evaluate electrochemical properties of aluminum alloy sacrificial anode in the deep sea environment. Methods In this paper, electrochemical properties of three kinds of aluminum sacrificial anode in the South China Sea with 1200 m depth were measured with deep sea testing technique and equipment of State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute. Results The open circuit potential was about ?1.17 V (vs Ag/AgCl) and the working potential was in the range of ?1.11 to ?0.91 V when the three anodes were in a deep sea environment of 1200m. The practical current capacity of 1# and 2# were both below 2400 A?h/kg and current efficiency were about 80%, and their dissolution morphologies were not uniform and corrosion product deposited on the surface. The practical current capacity of 3# was about 2500 A?h/kg and the current efficiency was more than 85%, however there was large undissolved area and corrosion productions adherent to the anode surface. Conclusion The study result provides supports for cathodic protection design of deep-sea engineering equipment. |
| Close |
|
|
|