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| Corrosion Behavior of B10 Copper-nickel Alloy after Full Immersion in Indoor Simulated Seawater and Real Seawater |
| Received:March 20, 2020 Revised:April 25, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.08.010 |
| KeyWord:B10 copper-nickel alloy full immersion seawater corrosion |
| Author | Institution |
| PENG Wen-shan |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| DUAN Ti-gang |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| HOU Jian |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| MA Li |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| LIU Shao-tong |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| GUO Wei-min |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
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| Abstract: |
| The work aims to study the corrosion regularity of B10 copper-nickel alloy in the seawater immersion zone of Qingdao harbor. The full immersion experiment was carried out respectively in indoor simulated seawater and real seawater of harbor. The corrosion morphology, corrosion rate and pitting depth of B10 copper-nickel alloy after full immersion in seawater were compared and analyzed by 3D video photography, electrochemical test and weightless analysis. In the indoor simulated environment, there was an increasing trend for the pitting depth of B10 copper-nickel alloy as the immersion period increased. The corrosion rate and pitting depth of B10 copper-nickel alloy after immersion for 180 days in the real sea environment were smaller than those in the indoor simulated environment. In the indoor simulated environment, the main corrosion products of B10 copper-nickel alloy were Cu2O, Cu2(OH)3Cl and Cu(OH)2. Higher levels of Cu2O inhibited the marine fouling. Due to different seawater environments, there are significant differences in corrosion morphology, corrosion rate and pitting depth of B10 copper-nickel alloy in indoor simulation test and real sea test. |
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