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| Corrosion Characteristics of Titanium Alloy Seawater Pipeline System Materials |
| Received:June 15, 2019 Revised:July 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2019.11.007 |
| KeyWord:seawater pipeline system copper-nickel alloy titanium alloy corrosion performance |
| Author | Institution |
| YANG Wan-guo |
Qingdao NCS Testing Protection Technology Co., Ltd, Qingdao , China |
| DONG Cai-chang |
Qingdao NCS Testing Protection Technology Co., Ltd, Qingdao , China |
| QI Yun-fei |
Qingdao NCS Testing Protection Technology Co., Ltd, Qingdao , China |
| WU Heng |
Qingdao NCS Testing Protection Technology Co., Ltd, Qingdao , China |
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| Abstract: |
| Objective To conduct a series of comparative research experiments for providing reliable basic corrosion performance data for titanium alloy seawater pipeline material system. Methods Two kinds of main materials of copper-nickel alloy and titanium alloy seawater pipeline system were screened, and seawater corrosion immersion test and seawater corrosion electrochemical test were carried out to obtain the intrinsic corrosion performance of two types of seawater pipeline systems. Results Titanium alloy had no corrosion weight loss after 30 days of static seawater immersion. The self-corrosion potential and stable potential were positive, the self-corrosion current was small, and the corrosion resistance was good. The copper-nickel alloy immersed in static seawater had corrosion products and corrosion weight loss. The self-corrosion potential was lower than that of the titanium alloy, and the self-corrosion current was large, and the corrosion resistance was inferior to that of the titanium alloy. Conclusion Titanium alloy has good corrosion resistance in seawater and is suitable for large ships with long life requirements. |
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