Abstract
The behaviour of copper in sea water containing sulphides has been examined in the pH range 6·5 to 8·6. The weight loss values show that sulphides increase the corrosion of copper at pH values > 7·2. In aerated solutions with pH values < 7·2 the sulphides cause some inhibition of corrosion due to the formation of a layer of copper sulphides less permeable than the oxychlorides formed when sulphides are absent. The main copper-sulphur compounds formed are Cu2S, Cu1·8S, Cu7S4 and CuS. Cu2O, CuO and Cu3(OH)2(CO3)2 have also been observed, the last at pH 8·6 only.
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Schedule a callMore From: Corrosion Engineering, Science and Technology: The International Journal of Corrosion Processes and Corrosion Control
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