Rusticles – Knowledge and References

Rusticles

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Titanic is Resting and Rusting

Published in Susai Rajendran, Gurmeet Singh, Titanic Corrosion, 2019

Figures 7.1 and 7.2 show the rusticles covering the Titanic’s bow and Captain Edward Smith’s bathtub. Biological activity tests have confirmed that the rusticles grew in the presence of a sulfate- reducing species of bacteria that grow quickly under anaerobic (no oxygen) conditions [2].

Long-term corrosion of steels in deep, cold, low oxygen sea waters

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Journal Information

Published in Corrosion Engineering, Science and Technology, 2021

Robert E. Melchers

The importance of understanding the overall corrosion processes and how these change with the development of rusts and the conditions thereby formed should now be clear. Longer term corrosion under low oxygen conditions is predominantly controlled by the cathodic HER, together with the slow oxidation of the external magnetite rust layers. These two mechanisms are well-known, but taken together in the present context throw a new light on the corrosion processes for longer-term corrosion under very low DO and the very low temperature conditions. They provide a mechanism for the on-going abiotic corrosion of shipwrecks located in deep, low temperature, low DO sea waters. Such corrosion also provides a mechanism for the provision of ferrous ions and thus for the development of rusticles. Moreover, where nutrients such as DIN are available, the release of ferrous ions from the slow oxidation of magnetite then provides directly for the possible occurrence of MIC.