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| Different Corrosion Behaviors of T2 Copper in Different Splash Conditions |
| Received:October 22, 2018 Revised:April 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.04.004 |
| KeyWord:T2 copper sea splash corrosion behavior |
| Author | Institution |
| REN Hai-tao |
Sanya Branch of Luoyang Ship Material Research Institute, Sanya , China |
| FU Ce-hu |
Sanya Branch of Luoyang Ship Material Research Institute, Sanya , China |
| LI Wen-jun |
Sanya Branch of Luoyang Ship Material Research Institute, Sanya , China |
| YAO Hua |
Sanya Branch of Luoyang Ship Material Research Institute, Sanya , China |
| LI Geng-rong |
Sanya Branch of Luoyang Ship Material Research Institute, Sanya , China |
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| Abstract: |
| Objective To study corrosion behaviors of T2 copper in different splash conditions. Methods The environmental test of T2 copper in Sanya tropical marine splash zone was carried out for 3 cycles of 0.5, 1 and 2 years. Then, the corrosion products were analyzed with scanning electron microscope and X-ray diffractometer; and the corrosion behaviors of T2 copper under different splash conditions were studied with electrochemical workstation. Results The corrosion rate of T2 copper in the splash zone of embankment and nearing the splash zone of embankment decreased with time. In different periods, corrosion products of T2 copper on the splash zone was a thin oxide layer of stratification on the surface. The corrosion products mainly were composed of loose green Cu2(OH)3Cl in the outer layer and dense brown Cu2O in the inner layer. In different test cycles, the surface corrosion products of samples were relatively flat. The corrosion product layers on the splash zone of embankment were thicker than those nearing the splash zone of embankment. The corrosion morphology of samples was uniform corrosion. The rust layers in both splash areas were composed of Cu2O and Cu2(OH)3Cl phases. The main Cu2O and Cu2(OH)3Cl phases were found on the rust layer of the embankment splash area. The rust layer nearing the splash zone of embankment was mainly Cu2O phase with a small amount of Cu2(OH)3Cl phase. Conclusion The corrosion rate and corrosion products of T2 copper will be different during 2 years environmental test due to different splash conditions at the same test site. |
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