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| Corrosion Resistance of Three Kinds of Copper Alloys in First-class Reverse Osmosis Seawater |
| Received:November 30, 2019 Revised:March 03, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.06.012 |
| KeyWord:copper alloy first-class reverse osmosis seawater corrosion rate polarization curve |
| Author | Institution |
| WU Heng |
Qingdao NCS Testing & Corrosion Protection Technology Co, Ltd, Qingdao , China |
| DONG Cai-chang |
Qingdao NCS Testing & Corrosion Protection Technology Co, Ltd, Qingdao , China |
| DING Guo-qing |
Qingdao NCS Testing & Corrosion Protection Technology Co, Ltd, Qingdao , China |
| ZHANG Bo |
Qingdao NCS Testing & Corrosion Protection Technology Co, Ltd, Qingdao , China |
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| Abstract: |
| To evaluate the corrosion resistance of copper alloys commonly used in fresh water pipelines, the corrosion resistance of three typical copper alloys, B10 copper alloy, TUP copper, and aluminum bronze, in first-class reverse osmosis seawater was studied by means of immersion test and electrochemical test. The data were analyzed by orthogonal test method. It was found that the weight loss of the copper alloy in the indoor immersion test was at the corrosion rate of the order of 0.01 mm / a, and the B10 had the smallest weight loss. As the temperature increased, the step of the B10 polarization curve was no longer obvious. Through orthogonal analysis, compared with TDS and water hardness, the temperature has the greatest influence on the corrosion resistance of copper alloys in desalination seawater. The above results show that among the three test copper alloys, B10 has good corrosion resistance; the surface continuous film formation ability decreases at high temperatures in first-class reverse osmosis seawater; the protective effect on the substrate is no longer obvious; and the temperature has great influence on corrosion resistance of B10. |
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